{
  "url": "https://openlegislation.uk/air-quality-standards-wales-regulations-2007/schedule-12/paragraph-1",
  "json_url": "https://openlegislation.uk/air-quality-standards-wales-regulations-2007/schedule-12/paragraph-1.json",
  "legislation": "wsi/2007/717",
  "legislation_title": "The Air Quality Standards (Wales) Regulations 2007",
  "legislation_url": "https://openlegislation.uk/air-quality-standards-wales-regulations-2007",
  "path": "schedule/12/paragraph/1",
  "kind": "paragraph",
  "number": "1",
  "heading": null,
  "text": "The following information on ozone concentrations must be obtained and collated—\nType of station\nLevel\nAveraging /accumulation time\nProvisional data for each month from April to September\nReport for each year\n(1) Maximum daily 8-hour mean.\n(2) In this table, “AOT40” has the same meaning as in paragraph 3(d) of Part 4 of Schedule 1.\nInformation threshold\nAny\n180μg/m3\n1 hour\nFor each day with any exceedance: date, total hours of, exceedance, maximum 1-hour ozone and related NO2 values when required\nFor each day with any exceedance: date, total hours of exceedance, maximum 1-hour ozone and related NO2 values, when required\nMonthly 1-hour maximum ozone\nAlert threshold\nAny\n240μg/m3\n1 hour\nFor each day with any exceedance: date, total hours of exceedance, maximum 1-hour ozone and related NO2 values, when required\nFor each day with any exceedance: date, total hours of exceedance, maximum 1-hour ozone and related NO2 values, when required\nHealth protection\nAny\n120μg/m3\n8 hours\nFor each day with any exceedance: date, 8 hours maximum\nFor each day with any exceedance: date, 8 hours maximum\nVegetation protection\nSuburban, rural, rural background\nAOT40 = 6,000 μg/m3.h\n1 hour, accumulated from May to June\nValue\nForest protection\nSuburban, rural, rural background\nAOT40 = 20,000 μg/m3.h\n1 hour, accumulated from April to September\nValue\nMaterials\nAny\n40 μg/m3\n1 year\nValue",
  "extent": null,
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "footnote",
      "label": "f1",
      "text": "(1) Maximum daily 8-hour mean."
    },
    {
      "type": "footnote",
      "label": "f2",
      "text": "(2) In this table, “AOT40” has the same meaning as in paragraph 3(d) of Part 4 of Schedule 1."
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/wsi/2007/717/schedule/12/paragraph/1",
    "retrieved_at": "2026-10-29T00:01:33.213395+00:00"
  },
  "licence": "Open Government Licence v3.0",
  "licence_url": "https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/",
  "attribution": "Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives."
}