{
  "schema": "aq26_england_network_review_v3",
  "status": "complete_england_network_review",
  "target_area": "England",
  "period_start": "2026-06-30",
  "period_end": "2026-07-29",
  "period_days": 30,
  "period_end_rule": "latest completed source-calendar day with valid evidence in all 9 English regions",
  "regions_with_valid_data_on_period_end": 9,
  "configured_region_count": 9,
  "regions_reporting": 9,
  "region_coverage_percent": 100.0,
  "active_aurn_sites_discovered": 171,
  "configured_target_pollutant_station_count": 142,
  "reporting_station_count": 142,
  "reporting_station_coverage_percent": 100.0,
  "configured_target_stream_count": 330,
  "expected_configured_stream_days": 9888,
  "valid_station_days": 9570,
  "configured_stream_day_completeness_percent": 96.8,
  "national_publication_ready": true,
  "coverage_contract": {
    "all_nine_english_regions_required": true,
    "minimum_reporting_station_fraction": 0.85,
    "minimum_configured_stream_day_fraction": 0.85,
    "minimum_region_pollutant_stream_day_fraction": 0.8,
    "minimum_stations_for_regional_comparison": 2,
    "fixed_panel_minimum_valid_days": 27,
    "configured_pollutant_streams_are_the_completeness_denominator": true
  },
  "completeness_scope": "valid station-days divided by expected station-days for every currently configured NO2, PM10 and PM2.5 stream discovered at active English AURN sites",
  "pollutant_coverage": [
    {
      "pollutant": "PM2.5",
      "configured_station_streams": 126,
      "configured_regions": 9,
      "expected_station_days": 3774,
      "reporting_stations": 126,
      "reporting_regions": 9,
      "valid_station_days": 3679,
      "configured_stream_day_completeness_percent": 97.5,
      "all_configured_regions_reporting": true,
      "coverage_status": "reporting"
    },
    {
      "pollutant": "PM10",
      "configured_station_streams": 108,
      "configured_regions": 9,
      "expected_station_days": 3234,
      "reporting_stations": 107,
      "reporting_regions": 9,
      "valid_station_days": 3106,
      "configured_stream_day_completeness_percent": 96.0,
      "all_configured_regions_reporting": true,
      "coverage_status": "reporting"
    },
    {
      "pollutant": "NO2",
      "configured_station_streams": 96,
      "configured_regions": 9,
      "expected_station_days": 2880,
      "reporting_stations": 96,
      "reporting_regions": 9,
      "valid_station_days": 2785,
      "configured_stream_day_completeness_percent": 96.7,
      "all_configured_regions_reporting": true,
      "coverage_status": "reporting"
    }
  ],
  "region_pollutant_coverage": [
    {
      "region": "North East",
      "pollutant": "PM2.5",
      "expected_station_days": 360,
      "valid_station_days": 337,
      "reporting_stations": 12,
      "completeness_percent": 93.6,
      "meets_minimum_cell_floor": true,
      "meets_national_stream_threshold": true,
      "coverage_status": "meets_national_threshold"
    },
    {
      "region": "North East",
      "pollutant": "PM10",
      "expected_station_days": 300,
      "valid_station_days": 278,
      "reporting_stations": 10,
      "completeness_percent": 92.7,
      "meets_minimum_cell_floor": true,
      "meets_national_stream_threshold": true,
      "coverage_status": "meets_national_threshold"
    },
    {
      "region": "North East",
      "pollutant": "NO2",
      "expected_station_days": 240,
      "valid_station_days": 219,
      "reporting_stations": 8,
      "completeness_percent": 91.2,
      "meets_minimum_cell_floor": true,
      "meets_national_stream_threshold": true,
      "coverage_status": "meets_national_threshold"
    },
    {
      "region": "North West",
      "pollutant": "PM2.5",
      "expected_station_days": 534,
      "valid_station_days": 512,
      "reporting_stations": 18,
      "completeness_percent": 95.9,
      "meets_minimum_cell_floor": true,
      "meets_national_stream_threshold": true,
      "coverage_status": "meets_national_threshold"
    },
    {
      "region": "North West",
      "pollutant": "PM10",
      "expected_station_days": 474,
      "valid_station_days": 448,
      "reporting_stations": 16,
      "completeness_percent": 94.5,
      "meets_minimum_cell_floor": true,
      "meets_national_stream_threshold": true,
      "coverage_status": "meets_national_threshold"
    },
    {
      "region": "North West",
      "pollutant": "NO2",
      "expected_station_days": 510,
      "valid_station_days": 482,
      "reporting_stations": 17,
      "completeness_percent": 94.5,
      "meets_minimum_cell_floor": true,
      "meets_national_stream_threshold": true,
      "coverage_status": "meets_national_threshold"
    },
    {
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "expected_station_days": 570,
      "valid_station_days": 549,
      "reporting_stations": 19,
      "completeness_percent": 96.3,
      "meets_minimum_cell_floor": true,
      "meets_national_stream_threshold": true,
      "coverage_status": "meets_national_threshold"
    },
    {
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "expected_station_days": 510,
      "valid_station_days": 489,
      "reporting_stations": 17,
      "completeness_percent": 95.9,
      "meets_minimum_cell_floor": true,
      "meets_national_stream_threshold": true,
      "coverage_status": "meets_national_threshold"
    },
    {
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "expected_station_days": 450,
      "valid_station_days": 441,
      "reporting_stations": 15,
      "completeness_percent": 98.0,
      "meets_minimum_cell_floor": true,
      "meets_national_stream_threshold": true,
      "coverage_status": "meets_national_threshold"
    },
    {
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "expected_station_days": 360,
      "valid_station_days": 358,
      "reporting_stations": 12,
      "completeness_percent": 99.4,
      "meets_minimum_cell_floor": true,
      "meets_national_stream_threshold": true,
      "coverage_status": "meets_national_threshold"
    },
    {
      "region": "East Midlands",
      "pollutant": "PM10",
      "expected_station_days": 300,
      "valid_station_days": 300,
      "reporting_stations": 10,
      "completeness_percent": 100.0,
      "meets_minimum_cell_floor": true,
      "meets_national_stream_threshold": true,
      "coverage_status": "meets_national_threshold"
    },
    {
      "region": "East Midlands",
      "pollutant": "NO2",
      "expected_station_days": 270,
      "valid_station_days": 269,
      "reporting_stations": 9,
      "completeness_percent": 99.6,
      "meets_minimum_cell_floor": true,
      "meets_national_stream_threshold": true,
      "coverage_status": "meets_national_threshold"
    },
    {
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "expected_station_days": 570,
      "valid_station_days": 560,
      "reporting_stations": 19,
      "completeness_percent": 98.2,
      "meets_minimum_cell_floor": true,
      "meets_national_stream_threshold": true,
      "coverage_status": "meets_national_threshold"
    },
    {
      "region": "West Midlands",
      "pollutant": "PM10",
      "expected_station_days": 540,
      "valid_station_days": 530,
      "reporting_stations": 18,
      "completeness_percent": 98.1,
      "meets_minimum_cell_floor": true,
      "meets_national_stream_threshold": true,
      "coverage_status": "meets_national_threshold"
    },
    {
      "region": "West Midlands",
      "pollutant": "NO2",
      "expected_station_days": 480,
      "valid_station_days": 471,
      "reporting_stations": 16,
      "completeness_percent": 98.1,
      "meets_minimum_cell_floor": true,
      "meets_national_stream_threshold": true,
      "coverage_status": "meets_national_threshold"
    },
    {
      "region": "East of England",
      "pollutant": "PM2.5",
      "expected_station_days": 210,
      "valid_station_days": 210,
      "reporting_stations": 7,
      "completeness_percent": 100.0,
      "meets_minimum_cell_floor": true,
      "meets_national_stream_threshold": true,
      "coverage_status": "meets_national_threshold"
    },
    {
      "region": "East of England",
      "pollutant": "PM10",
      "expected_station_days": 150,
      "valid_station_days": 150,
      "reporting_stations": 5,
      "completeness_percent": 100.0,
      "meets_minimum_cell_floor": true,
      "meets_national_stream_threshold": true,
      "coverage_status": "meets_national_threshold"
    },
    {
      "region": "East of England",
      "pollutant": "NO2",
      "expected_station_days": 120,
      "valid_station_days": 107,
      "reporting_stations": 4,
      "completeness_percent": 89.2,
      "meets_minimum_cell_floor": true,
      "meets_national_stream_threshold": true,
      "coverage_status": "meets_national_threshold"
    },
    {
      "region": "London",
      "pollutant": "PM2.5",
      "expected_station_days": 210,
      "valid_station_days": 210,
      "reporting_stations": 7,
      "completeness_percent": 100.0,
      "meets_minimum_cell_floor": true,
      "meets_national_stream_threshold": true,
      "coverage_status": "meets_national_threshold"
    },
    {
      "region": "London",
      "pollutant": "PM10",
      "expected_station_days": 180,
      "valid_station_days": 150,
      "reporting_stations": 5,
      "completeness_percent": 83.3,
      "meets_minimum_cell_floor": true,
      "meets_national_stream_threshold": false,
      "coverage_status": "meets_minimum_floor_with_exception"
    },
    {
      "region": "London",
      "pollutant": "NO2",
      "expected_station_days": 120,
      "valid_station_days": 120,
      "reporting_stations": 4,
      "completeness_percent": 100.0,
      "meets_minimum_cell_floor": true,
      "meets_national_stream_threshold": true,
      "coverage_status": "meets_national_threshold"
    },
    {
      "region": "South East",
      "pollutant": "PM2.5",
      "expected_station_days": 540,
      "valid_station_days": 540,
      "reporting_stations": 18,
      "completeness_percent": 100.0,
      "meets_minimum_cell_floor": true,
      "meets_national_stream_threshold": true,
      "coverage_status": "meets_national_threshold"
    },
    {
      "region": "South East",
      "pollutant": "PM10",
      "expected_station_days": 480,
      "valid_station_days": 471,
      "reporting_stations": 16,
      "completeness_percent": 98.1,
      "meets_minimum_cell_floor": true,
      "meets_national_stream_threshold": true,
      "coverage_status": "meets_national_threshold"
    },
    {
      "region": "South East",
      "pollutant": "NO2",
      "expected_station_days": 390,
      "valid_station_days": 381,
      "reporting_stations": 13,
      "completeness_percent": 97.7,
      "meets_minimum_cell_floor": true,
      "meets_national_stream_threshold": true,
      "coverage_status": "meets_national_threshold"
    },
    {
      "region": "South West",
      "pollutant": "PM2.5",
      "expected_station_days": 420,
      "valid_station_days": 403,
      "reporting_stations": 14,
      "completeness_percent": 96.0,
      "meets_minimum_cell_floor": true,
      "meets_national_stream_threshold": true,
      "coverage_status": "meets_national_threshold"
    },
    {
      "region": "South West",
      "pollutant": "PM10",
      "expected_station_days": 300,
      "valid_station_days": 290,
      "reporting_stations": 10,
      "completeness_percent": 96.7,
      "meets_minimum_cell_floor": true,
      "meets_national_stream_threshold": true,
      "coverage_status": "meets_national_threshold"
    },
    {
      "region": "South West",
      "pollutant": "NO2",
      "expected_station_days": 300,
      "valid_station_days": 295,
      "reporting_stations": 10,
      "completeness_percent": 98.3,
      "meets_minimum_cell_floor": true,
      "meets_national_stream_threshold": true,
      "coverage_status": "meets_national_threshold"
    }
  ],
  "regional_coverage_exceptions": [
    {
      "region": "London",
      "pollutant": "PM10",
      "expected_station_days": 180,
      "valid_station_days": 150,
      "reporting_stations": 5,
      "completeness_percent": 83.3,
      "meets_minimum_cell_floor": true,
      "meets_national_stream_threshold": false,
      "coverage_status": "meets_minimum_floor_with_exception"
    }
  ],
  "availability": [
    {
      "region": "North East",
      "active_aurn_sites_discovered": 13,
      "configured_target_pollutant_sites": 12,
      "reporting_stations": 12,
      "pollutants_with_valid_daily_means": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "valid_station_days": 834,
      "coverage_status": "reporting"
    },
    {
      "region": "North West",
      "active_aurn_sites_discovered": 24,
      "configured_target_pollutant_sites": 23,
      "reporting_stations": 23,
      "pollutants_with_valid_daily_means": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "valid_station_days": 1442,
      "coverage_status": "reporting"
    },
    {
      "region": "Yorkshire and the Humber",
      "active_aurn_sites_discovered": 21,
      "configured_target_pollutant_sites": 20,
      "reporting_stations": 20,
      "pollutants_with_valid_daily_means": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "valid_station_days": 1479,
      "coverage_status": "reporting"
    },
    {
      "region": "East Midlands",
      "active_aurn_sites_discovered": 16,
      "configured_target_pollutant_sites": 13,
      "reporting_stations": 13,
      "pollutants_with_valid_daily_means": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "valid_station_days": 927,
      "coverage_status": "reporting"
    },
    {
      "region": "West Midlands",
      "active_aurn_sites_discovered": 22,
      "configured_target_pollutant_sites": 22,
      "reporting_stations": 22,
      "pollutants_with_valid_daily_means": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "valid_station_days": 1561,
      "coverage_status": "reporting"
    },
    {
      "region": "East of England",
      "active_aurn_sites_discovered": 15,
      "configured_target_pollutant_sites": 8,
      "reporting_stations": 8,
      "pollutants_with_valid_daily_means": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "valid_station_days": 467,
      "coverage_status": "reporting"
    },
    {
      "region": "London",
      "active_aurn_sites_discovered": 17,
      "configured_target_pollutant_sites": 7,
      "reporting_stations": 7,
      "pollutants_with_valid_daily_means": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "valid_station_days": 480,
      "coverage_status": "reporting"
    },
    {
      "region": "South East",
      "active_aurn_sites_discovered": 24,
      "configured_target_pollutant_sites": 20,
      "reporting_stations": 20,
      "pollutants_with_valid_daily_means": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "valid_station_days": 1392,
      "coverage_status": "reporting"
    },
    {
      "region": "South West",
      "active_aurn_sites_discovered": 19,
      "configured_target_pollutant_sites": 17,
      "reporting_stations": 17,
      "pollutants_with_valid_daily_means": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "valid_station_days": 988,
      "coverage_status": "reporting"
    }
  ],
  "station_statistics": [
    {
      "region": "East Midlands",
      "station_code": "CHLG",
      "uka_id": "UKA00604",
      "station_name": "Chesterfield Loundsley Green",
      "environment_type": "Urban Background",
      "pollutant": "NO2",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 3.81,
      "period_median_ug_m3": 3.77,
      "period_p95_daily_mean_ug_m3": 5.89,
      "max_daily_mean_ug_m3": 7.99,
      "days_above_who_reference": 0
    },
    {
      "region": "East Midlands",
      "station_code": "CHLG",
      "uka_id": "UKA00604",
      "station_name": "Chesterfield Loundsley Green",
      "environment_type": "Urban Background",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 12.17,
      "period_median_ug_m3": 10.98,
      "period_p95_daily_mean_ug_m3": 22.41,
      "max_daily_mean_ug_m3": 25.86,
      "days_above_who_reference": 0
    },
    {
      "region": "East Midlands",
      "station_code": "CHLG",
      "uka_id": "UKA00604",
      "station_name": "Chesterfield Loundsley Green",
      "environment_type": "Urban Background",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 6.5,
      "period_median_ug_m3": 5.14,
      "period_p95_daily_mean_ug_m3": 14.42,
      "max_daily_mean_ug_m3": 18.7,
      "days_above_who_reference": 1
    },
    {
      "region": "East Midlands",
      "station_code": "CHS7",
      "uka_id": "UKA00529",
      "station_name": "Chesterfield Roadside",
      "environment_type": "Urban Traffic",
      "pollutant": "NO2",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 8.73,
      "period_median_ug_m3": 8.2,
      "period_p95_daily_mean_ug_m3": 14.38,
      "max_daily_mean_ug_m3": 18.72,
      "days_above_who_reference": 0
    },
    {
      "region": "East Midlands",
      "station_code": "CHS7",
      "uka_id": "UKA00529",
      "station_name": "Chesterfield Roadside",
      "environment_type": "Urban Traffic",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 20.64,
      "period_median_ug_m3": 17.14,
      "period_p95_daily_mean_ug_m3": 47.46,
      "max_daily_mean_ug_m3": 56.72,
      "days_above_who_reference": 2
    },
    {
      "region": "East Midlands",
      "station_code": "CHS7",
      "uka_id": "UKA00529",
      "station_name": "Chesterfield Roadside",
      "environment_type": "Urban Traffic",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 7.98,
      "period_median_ug_m3": 6.4,
      "period_p95_daily_mean_ug_m3": 16.62,
      "max_daily_mean_ug_m3": 22.64,
      "days_above_who_reference": 3
    },
    {
      "region": "East Midlands",
      "station_code": "DESA",
      "uka_id": "UKA00630",
      "station_name": "Derby St Alkmund's Way",
      "environment_type": "Urban Traffic",
      "pollutant": "NO2",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 14.29,
      "period_median_ug_m3": 13.57,
      "period_p95_daily_mean_ug_m3": 26.06,
      "max_daily_mean_ug_m3": 29.68,
      "days_above_who_reference": 3
    },
    {
      "region": "East Midlands",
      "station_code": "DESA",
      "uka_id": "UKA00630",
      "station_name": "Derby St Alkmund's Way",
      "environment_type": "Urban Traffic",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 7.74,
      "period_median_ug_m3": 6.38,
      "period_p95_daily_mean_ug_m3": 14.76,
      "max_daily_mean_ug_m3": 19.7,
      "days_above_who_reference": 2
    },
    {
      "region": "East Midlands",
      "station_code": "DESB",
      "uka_id": "UKA01027",
      "station_name": "Derby Stockbrook Park",
      "environment_type": "Urban Background",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 12.66,
      "period_median_ug_m3": 11.76,
      "period_p95_daily_mean_ug_m3": 21.24,
      "max_daily_mean_ug_m3": 24.42,
      "days_above_who_reference": 0
    },
    {
      "region": "East Midlands",
      "station_code": "DESB",
      "uka_id": "UKA01027",
      "station_name": "Derby Stockbrook Park",
      "environment_type": "Urban Background",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 6.8,
      "period_median_ug_m3": 5.63,
      "period_p95_daily_mean_ug_m3": 13.29,
      "max_daily_mean_ug_m3": 17.48,
      "days_above_who_reference": 1
    },
    {
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      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "WAR",
      "uka_id": "UKA00538",
      "region": "North West",
      "pollutant": "NO2",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "WSMR",
      "uka_id": "UKA00603",
      "region": "North West",
      "pollutant": "NO2",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "WIG5",
      "uka_id": "UKA00482",
      "region": "North West",
      "pollutant": "PM2.5",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "WIG5",
      "uka_id": "UKA00482",
      "region": "North West",
      "pollutant": "PM10",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "WIG5",
      "uka_id": "UKA00482",
      "region": "North West",
      "pollutant": "NO2",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "TRAN",
      "uka_id": "UKA00406",
      "region": "North West",
      "pollutant": "PM2.5",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "TRAN",
      "uka_id": "UKA00406",
      "region": "North West",
      "pollutant": "PM10",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "TRAN",
      "uka_id": "UKA00406",
      "region": "North West",
      "pollutant": "NO2",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "BAR3",
      "uka_id": "UKA00353",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "BAR3",
      "uka_id": "UKA00353",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "BAR3",
      "uka_id": "UKA00353",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "BDMA",
      "uka_id": "UKA00611",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "BRAS",
      "uka_id": "UKA01090",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "BRAS",
      "uka_id": "UKA01090",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "BRWP",
      "uka_id": "UKA01161",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "BRWP",
      "uka_id": "UKA01161",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "DYAG",
      "uka_id": "UKA00654",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "DYAG",
      "uka_id": "UKA00654",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "DYAG",
      "uka_id": "UKA00654",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "DCST",
      "uka_id": "UKA00612",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "DCST",
      "uka_id": "UKA00612",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "HARW",
      "uka_id": "UKA01093",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "HARW",
      "uka_id": "UKA01093",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "HUL2",
      "uka_id": "UKA00450",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "HUL2",
      "uka_id": "UKA00450",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "HUL2",
      "uka_id": "UKA00450",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "HULR",
      "uka_id": "UKA00600",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "HULR",
      "uka_id": "UKA00600",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "HULR",
      "uka_id": "UKA00600",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "IMGM",
      "uka_id": "UKA00647",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "IMGM",
      "uka_id": "UKA00647",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "IMGM",
      "uka_id": "UKA00647",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "LEED",
      "uka_id": "UKA00222",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "LEED",
      "uka_id": "UKA00222",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "LEED",
      "uka_id": "UKA00222",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "LED6",
      "uka_id": "UKA00527",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "LED6",
      "uka_id": "UKA00527",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "LED6",
      "uka_id": "UKA00527",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "ROED",
      "uka_id": "UKA01054",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "ROED",
      "uka_id": "UKA01054",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "SCN2",
      "uka_id": "UKA00381",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "SCN2",
      "uka_id": "UKA00381",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "SCN2",
      "uka_id": "UKA00381",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "SHBR",
      "uka_id": "UKA00622",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "SHBR",
      "uka_id": "UKA00622",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "SHDG",
      "uka_id": "UKA00575",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "SHDG",
      "uka_id": "UKA00575",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "SHDG",
      "uka_id": "UKA00575",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "SHE",
      "uka_id": "UKA00181",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "SHE",
      "uka_id": "UKA00181",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "SHE",
      "uka_id": "UKA00181",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "WAKA",
      "uka_id": "UKA01107",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "WAKA",
      "uka_id": "UKA01107",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "YK10",
      "uka_id": "UKA00523",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "YK10",
      "uka_id": "UKA00523",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "YK10",
      "uka_id": "UKA00523",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "YK11",
      "uka_id": "UKA00524",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "YK11",
      "uka_id": "UKA00524",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "YK11",
      "uka_id": "UKA00524",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "CHLG",
      "uka_id": "UKA00604",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "CHLG",
      "uka_id": "UKA00604",
      "region": "East Midlands",
      "pollutant": "PM10",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "CHLG",
      "uka_id": "UKA00604",
      "region": "East Midlands",
      "pollutant": "NO2",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "CHS7",
      "uka_id": "UKA00529",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "CHS7",
      "uka_id": "UKA00529",
      "region": "East Midlands",
      "pollutant": "PM10",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "CHS7",
      "uka_id": "UKA00529",
      "region": "East Midlands",
      "pollutant": "NO2",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "DESA",
      "uka_id": "UKA00630",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "DESA",
      "uka_id": "UKA00630",
      "region": "East Midlands",
      "pollutant": "NO2",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "DESB",
      "uka_id": "UKA01027",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "DESB",
      "uka_id": "UKA01027",
      "region": "East Midlands",
      "pollutant": "PM10",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "LEIR",
      "uka_id": "UKA00609",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "LEIR",
      "uka_id": "UKA00609",
      "region": "East Midlands",
      "pollutant": "PM10",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "LEIR",
      "uka_id": "UKA00609",
      "region": "East Midlands",
      "pollutant": "NO2",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "LECU",
      "uka_id": "UKA00573",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "LECU",
      "uka_id": "UKA00573",
      "region": "East Midlands",
      "pollutant": "PM10",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "LECU",
      "uka_id": "UKA00573",
      "region": "East Midlands",
      "pollutant": "NO2",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "LIN3",
      "uka_id": "UKA00561",
      "region": "East Midlands",
      "pollutant": "NO2",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "LOTA",
      "uka_id": "UKA01103",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "LOTA",
      "uka_id": "UKA01103",
      "region": "East Midlands",
      "pollutant": "PM10",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "MALA",
      "uka_id": "UKA01050",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "MALA",
      "uka_id": "UKA01050",
      "region": "East Midlands",
      "pollutant": "PM10",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "NTN4",
      "uka_id": "UKA00632",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "NTN4",
      "uka_id": "UKA00632",
      "region": "East Midlands",
      "pollutant": "NO2",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "NOTB",
      "uka_id": "UKA01092",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "NOTB",
      "uka_id": "UKA01092",
      "region": "East Midlands",
      "pollutant": "PM10",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "NOTK",
      "uka_id": "UKA01048",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "NOTK",
      "uka_id": "UKA01048",
      "region": "East Midlands",
      "pollutant": "PM10",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "NOTK",
      "uka_id": "UKA01048",
      "region": "East Midlands",
      "pollutant": "NO2",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "NWBV",
      "uka_id": "UKA00618",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "NWBV",
      "uka_id": "UKA00618",
      "region": "East Midlands",
      "pollutant": "PM10",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "NWBV",
      "uka_id": "UKA00618",
      "region": "East Midlands",
      "pollutant": "NO2",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "BEDC",
      "uka_id": "UKA01158",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "BEDC",
      "uka_id": "UKA01158",
      "region": "West Midlands",
      "pollutant": "PM10",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "BIRR",
      "uka_id": "UKA00626",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "BIRR",
      "uka_id": "UKA00626",
      "region": "West Midlands",
      "pollutant": "PM10",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "BIRR",
      "uka_id": "UKA00626",
      "region": "West Midlands",
      "pollutant": "NO2",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "BIHG",
      "uka_id": "UKA01062",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "BIHG",
      "uka_id": "UKA01062",
      "region": "West Midlands",
      "pollutant": "PM10",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "BIHG",
      "uka_id": "UKA01062",
      "region": "West Midlands",
      "pollutant": "NO2",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "BMLD",
      "uka_id": "UKA00655",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "BMLD",
      "uka_id": "UKA00655",
      "region": "West Midlands",
      "pollutant": "PM10",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "BMLD",
      "uka_id": "UKA00655",
      "region": "West Midlands",
      "pollutant": "NO2",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "BAQF",
      "uka_id": "UKA01108",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "BAQF",
      "uka_id": "UKA01108",
      "region": "West Midlands",
      "pollutant": "PM10",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "BOTR",
      "uka_id": "UKA00652",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "BOTR",
      "uka_id": "UKA00652",
      "region": "West Midlands",
      "pollutant": "PM10",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "BOTR",
      "uka_id": "UKA00652",
      "region": "West Midlands",
      "pollutant": "NO2",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "CANK",
      "uka_id": "UKA00623",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "CANK",
      "uka_id": "UKA00623",
      "region": "West Midlands",
      "pollutant": "NO2",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "COAL",
      "uka_id": "UKA00592",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "COAL",
      "uka_id": "UKA00592",
      "region": "West Midlands",
      "pollutant": "PM10",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "COAL",
      "uka_id": "UKA00592",
      "region": "West Midlands",
      "pollutant": "NO2",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "COBR",
      "uka_id": "UKA00634",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "COBR",
      "uka_id": "UKA00634",
      "region": "West Midlands",
      "pollutant": "PM10",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "COBR",
      "uka_id": "UKA00634",
      "region": "West Midlands",
      "pollutant": "NO2",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "LEAM",
      "uka_id": "UKA00265",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "LEAM",
      "uka_id": "UKA00265",
      "region": "West Midlands",
      "pollutant": "PM10",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "LEAM",
      "uka_id": "UKA00265",
      "region": "West Midlands",
      "pollutant": "NO2",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "LEAR",
      "uka_id": "UKA00564",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "LEAR",
      "uka_id": "UKA00564",
      "region": "West Midlands",
      "pollutant": "PM10",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "LEAR",
      "uka_id": "UKA00564",
      "region": "West Midlands",
      "pollutant": "NO2",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "LEOM",
      "uka_id": "UKA00489",
      "region": "West Midlands",
      "pollutant": "NO2",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "BOLD",
      "uka_id": "UKA00595",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "BOLD",
      "uka_id": "UKA00595",
      "region": "West Midlands",
      "pollutant": "PM10",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "BOLD",
      "uka_id": "UKA00595",
      "region": "West Midlands",
      "pollutant": "NO2",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "SHUN",
      "uka_id": "UKA01055",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "SHUN",
      "uka_id": "UKA01055",
      "region": "West Midlands",
      "pollutant": "PM10",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "STKR",
      "uka_id": "UKA00610",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "STKR",
      "uka_id": "UKA00610",
      "region": "West Midlands",
      "pollutant": "PM10",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "STKR",
      "uka_id": "UKA00610",
      "region": "West Midlands",
      "pollutant": "NO2",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "STOK",
      "uka_id": "UKA00337",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "STOK",
      "uka_id": "UKA00337",
      "region": "West Midlands",
      "pollutant": "PM10",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "STOK",
      "uka_id": "UKA00337",
      "region": "West Midlands",
      "pollutant": "NO2",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "TDHD",
      "uka_id": "UKA00648",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "TDHD",
      "uka_id": "UKA00648",
      "region": "West Midlands",
      "pollutant": "PM10",
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      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "TDHD",
      "uka_id": "UKA00648",
      "region": "West Midlands",
      "pollutant": "NO2",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "WALD",
      "uka_id": "UKA01117",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "WALD",
      "uka_id": "UKA01117",
      "region": "West Midlands",
      "pollutant": "PM10",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "WAL4",
      "uka_id": "UKA00565",
      "region": "West Midlands",
      "pollutant": "NO2",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "WBKP",
      "uka_id": "UKA00658",
      "region": "West Midlands",
      "pollutant": "NO2",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "WOLE",
      "uka_id": "UKA01162",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "WOLE",
      "uka_id": "UKA01162",
      "region": "West Midlands",
      "pollutant": "PM10",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "WORT",
      "uka_id": "UKA01098",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "WORT",
      "uka_id": "UKA01098",
      "region": "West Midlands",
      "pollutant": "PM10",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "CAMK",
      "uka_id": "UKA01115",
      "region": "East of England",
      "pollutant": "PM2.5",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "CAMK",
      "uka_id": "UKA01115",
      "region": "East of England",
      "pollutant": "PM10",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "CAM",
      "uka_id": "UKA00396",
      "region": "East of England",
      "pollutant": "NO2",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "LUTR",
      "uka_id": "UKA00605",
      "region": "East of England",
      "pollutant": "PM2.5",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "LUTR",
      "uka_id": "UKA00605",
      "region": "East of England",
      "pollutant": "NO2",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "NO12",
      "uka_id": "UKA00549",
      "region": "East of England",
      "pollutant": "PM2.5",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "NO12",
      "uka_id": "UKA00549",
      "region": "East of England",
      "pollutant": "PM10",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "NO12",
      "uka_id": "UKA00549",
      "region": "East of England",
      "pollutant": "NO2",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "PEGE",
      "uka_id": "UKA01052",
      "region": "East of England",
      "pollutant": "PM2.5",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "PEGE",
      "uka_id": "UKA01052",
      "region": "East of England",
      "pollutant": "PM10",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "SOUS",
      "uka_id": "UKA01096",
      "region": "East of England",
      "pollutant": "PM2.5",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "SOUS",
      "uka_id": "UKA01096",
      "region": "East of England",
      "pollutant": "PM10",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "SEND",
      "uka_id": "UKA00409",
      "region": "East of England",
      "pollutant": "PM2.5",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "SEND",
      "uka_id": "UKA00409",
      "region": "East of England",
      "pollutant": "PM10",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "SEND",
      "uka_id": "UKA00409",
      "region": "East of England",
      "pollutant": "NO2",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "STGW",
      "uka_id": "UKA01156",
      "region": "East of England",
      "pollutant": "PM2.5",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "LONC",
      "uka_id": "UKA01119",
      "region": "London",
      "pollutant": "PM2.5",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "LONC",
      "uka_id": "UKA01119",
      "region": "London",
      "pollutant": "PM10",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "CLL2",
      "uka_id": "UKA00211",
      "region": "London",
      "pollutant": "PM2.5",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "CLL2",
      "uka_id": "UKA00211",
      "region": "London",
      "pollutant": "PM10",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "CLL2",
      "uka_id": "UKA00211",
      "region": "London",
      "pollutant": "NO2",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "HRL",
      "uka_id": "UKA00472",
      "region": "London",
      "pollutant": "PM2.5",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "HRL",
      "uka_id": "UKA00472",
      "region": "London",
      "pollutant": "PM10",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "HRL",
      "uka_id": "UKA00472",
      "region": "London",
      "pollutant": "NO2",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "HIL",
      "uka_id": "UKA00266",
      "region": "London",
      "pollutant": "PM2.5",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "HIL",
      "uka_id": "UKA00266",
      "region": "London",
      "pollutant": "PM10",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "HIL",
      "uka_id": "UKA00266",
      "region": "London",
      "pollutant": "NO2",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "LONM",
      "uka_id": "UKA01100",
      "region": "London",
      "pollutant": "PM2.5",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "LONM",
      "uka_id": "UKA01100",
      "region": "London",
      "pollutant": "PM10",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "TED2",
      "uka_id": "UKA00572",
      "region": "London",
      "pollutant": "PM2.5",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "TED2",
      "uka_id": "UKA00572",
      "region": "London",
      "pollutant": "PM10",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "HORS",
      "uka_id": "UKA00435",
      "region": "London",
      "pollutant": "PM2.5",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "HORS",
      "uka_id": "UKA00435",
      "region": "London",
      "pollutant": "NO2",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "AYLA",
      "uka_id": "UKA01109",
      "region": "South East",
      "pollutant": "PM2.5",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "BRT3",
      "uka_id": "UKA00483",
      "region": "South East",
      "pollutant": "PM2.5",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "BRT3",
      "uka_id": "UKA00483",
      "region": "South East",
      "pollutant": "PM10",
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      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "BRT3",
      "uka_id": "UKA00483",
      "region": "South East",
      "pollutant": "NO2",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "CHAT",
      "uka_id": "UKA00553",
      "region": "South East",
      "pollutant": "PM2.5",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "CHAT",
      "uka_id": "UKA00553",
      "region": "South East",
      "pollutant": "PM10",
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      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "CHAT",
      "uka_id": "UKA00553",
      "region": "South East",
      "pollutant": "NO2",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "EB",
      "uka_id": "UKA00546",
      "region": "South East",
      "pollutant": "PM2.5",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "EB",
      "uka_id": "UKA00546",
      "region": "South East",
      "pollutant": "PM10",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "EB",
      "uka_id": "UKA00546",
      "region": "South East",
      "pollutant": "NO2",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "FARC",
      "uka_id": "UKA01097",
      "region": "South East",
      "pollutant": "PM2.5",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "FARC",
      "uka_id": "UKA01097",
      "region": "South East",
      "pollutant": "PM10",
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      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "MAID",
      "uka_id": "UKA01064",
      "region": "South East",
      "pollutant": "PM2.5",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "MAID",
      "uka_id": "UKA01064",
      "region": "South East",
      "pollutant": "PM10",
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      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "MKCC",
      "uka_id": "UKA00963",
      "region": "South East",
      "pollutant": "PM2.5",
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      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "MKCC",
      "uka_id": "UKA00963",
      "region": "South East",
      "pollutant": "PM10",
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      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "OX",
      "uka_id": "UKA00258",
      "region": "South East",
      "pollutant": "NO2",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "OX8",
      "uka_id": "UKA00518",
      "region": "South East",
      "pollutant": "PM2.5",
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      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "OX8",
      "uka_id": "UKA00518",
      "region": "South East",
      "pollutant": "PM10",
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      "period_end": "2026-07-29",
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    },
    {
      "station_code": "OX8",
      "uka_id": "UKA00518",
      "region": "South East",
      "pollutant": "NO2",
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      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "PMTH",
      "uka_id": "UKA00421",
      "region": "South East",
      "pollutant": "PM2.5",
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      "period_end": "2026-07-29",
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    },
    {
      "station_code": "PMTH",
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    },
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      "station_code": "PMTH",
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    },
    {
      "station_code": "POAR",
      "uka_id": "UKA00651",
      "region": "South East",
      "pollutant": "PM2.5",
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      "period_end": "2026-07-29",
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    },
    {
      "station_code": "POAR",
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      "region": "South East",
      "pollutant": "PM10",
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    },
    {
      "station_code": "POAR",
      "uka_id": "UKA00651",
      "region": "South East",
      "pollutant": "NO2",
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      "period_end": "2026-07-29",
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    },
    {
      "station_code": "REA5",
      "uka_id": "UKA00620",
      "region": "South East",
      "pollutant": "PM10",
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      "period_end": "2026-07-29",
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    },
    {
      "station_code": "REA5",
      "uka_id": "UKA00620",
      "region": "South East",
      "pollutant": "NO2",
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      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "REA1",
      "uka_id": "UKA00462",
      "region": "South East",
      "pollutant": "PM2.5",
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      "period_end": "2026-07-29",
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    },
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      "station_code": "REA1",
      "uka_id": "UKA00462",
      "region": "South East",
      "pollutant": "PM10",
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    },
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      "station_code": "REA1",
      "uka_id": "UKA00462",
      "region": "South East",
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      "expected_station_days": 30
    },
    {
      "station_code": "RRKL",
      "uka_id": "UKA01053",
      "region": "South East",
      "pollutant": "PM2.5",
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      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "SLOW",
      "uka_id": "UKA01091",
      "region": "South East",
      "pollutant": "PM2.5",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
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    },
    {
      "station_code": "SLOW",
      "uka_id": "UKA01091",
      "region": "South East",
      "pollutant": "PM10",
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      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "SA33",
      "uka_id": "UKA00613",
      "region": "South East",
      "pollutant": "PM2.5",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "SA33",
      "uka_id": "UKA00613",
      "region": "South East",
      "pollutant": "PM10",
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      "period_end": "2026-07-29",
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    },
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      "station_code": "SA33",
      "uka_id": "UKA00613",
      "region": "South East",
      "pollutant": "NO2",
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      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "SOUT",
      "uka_id": "UKA00235",
      "region": "South East",
      "pollutant": "PM2.5",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
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    },
    {
      "station_code": "SOUT",
      "uka_id": "UKA00235",
      "region": "South East",
      "pollutant": "PM10",
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    },
    {
      "station_code": "SOUT",
      "uka_id": "UKA00235",
      "region": "South East",
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      "period_end": "2026-07-29",
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    },
    {
      "station_code": "STOR",
      "uka_id": "UKA00548",
      "region": "South East",
      "pollutant": "PM2.5",
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      "period_end": "2026-07-29",
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    },
    {
      "station_code": "STOR",
      "uka_id": "UKA00548",
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    },
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      "station_code": "STOR",
      "uka_id": "UKA00548",
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      "pollutant": "NO2",
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    },
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      "station_code": "WTHG",
      "uka_id": "UKA00628",
      "region": "South East",
      "pollutant": "PM2.5",
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      "station_code": "WTHG",
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      "region": "South East",
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      "expected_station_days": 30
    },
    {
      "station_code": "WOEA",
      "uka_id": "UKA01061",
      "region": "South East",
      "pollutant": "PM2.5",
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      "period_end": "2026-07-29",
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    },
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      "station_code": "WOEA",
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      "region": "South East",
      "pollutant": "PM10",
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      "expected_station_days": 30
    },
    {
      "station_code": "BPLE",
      "uka_id": "UKA00574",
      "region": "South West",
      "pollutant": "PM2.5",
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      "period_end": "2026-07-29",
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    },
    {
      "station_code": "BPLE",
      "uka_id": "UKA00574",
      "region": "South West",
      "pollutant": "PM10",
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      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "BHA4",
      "uka_id": "UKA00660",
      "region": "South West",
      "pollutant": "NO2",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "BORN",
      "uka_id": "UKA00429",
      "region": "South West",
      "pollutant": "PM2.5",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "BORN",
      "uka_id": "UKA00429",
      "region": "South West",
      "pollutant": "NO2",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "BOBV",
      "uka_id": "UKA01160",
      "region": "South West",
      "pollutant": "PM2.5",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "BOBV",
      "uka_id": "UKA01160",
      "region": "South West",
      "pollutant": "PM10",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "BRIW",
      "uka_id": "UKA01120",
      "region": "South West",
      "pollutant": "PM2.5",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "BRSP",
      "uka_id": "UKA01116",
      "region": "South West",
      "pollutant": "PM2.5",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "BRSP",
      "uka_id": "UKA01116",
      "region": "South West",
      "pollutant": "PM10",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "BRS8",
      "uka_id": "UKA00494",
      "region": "South West",
      "pollutant": "PM2.5",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "BRS8",
      "uka_id": "UKA00494",
      "region": "South West",
      "pollutant": "PM10",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "BRS8",
      "uka_id": "UKA00494",
      "region": "South West",
      "pollutant": "NO2",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "BR11",
      "uka_id": "UKA00631",
      "region": "South West",
      "pollutant": "PM2.5",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "BR11",
      "uka_id": "UKA00631",
      "region": "South West",
      "pollutant": "PM10",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "BR11",
      "uka_id": "UKA00631",
      "region": "South West",
      "pollutant": "NO2",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "CHGR",
      "uka_id": "UKA01101",
      "region": "South West",
      "pollutant": "PM2.5",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "CHBR",
      "uka_id": "UKA00624",
      "region": "South West",
      "pollutant": "PM2.5",
      "active_start": "2026-06-30",
      "period_end": "2026-07-29",
      "expected_station_days": 30
    },
    {
      "station_code": "CHBR",
      "uka_id": "UKA00624",
      "region": "South West",
      "pollutant": "NO2",
      "active_start": "2026-06-30",
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