{
  "url": "https://openlegislation.uk/eu-directive-2008-50/annex-IX/division-A",
  "json_url": "https://openlegislation.uk/eu-directive-2008-50/annex-IX/division-A.json",
  "legislation": "eudr/2008/50",
  "legislation_title": "Directive 2008/50/EC of the European Parliament and of the Council of 21 May 2008 on ambient air quality and cleaner air for Europe",
  "legislation_url": "https://openlegislation.uk/eu-directive-2008-50",
  "path": "annex/IX/division/A",
  "kind": "division",
  "number": "A",
  "heading": "Minimum number of sampling points for fixed measurements of concentrations of ozone",
  "text": "Minimum number of sampling points for fixed continuous measurements to assess compliance with target values, long — term objectives and information and alert thresholds where such measurements are the sole source of information.\nAt least 1 station in areas where exposure of the population to the highest concentrations of ozone is likely to occur. In agglomerations, at least 50 % of the stations shall be located in suburban areas.\n1 station per 25 000 km 2 for complex terrain is recommended.\nPopulation (× 1 000 )\nAgglomeration\nOther zones\nRural background\n< 250\n1\n1 station/ 50 000 km 2 as an average density over all zones per country\n< 500\n1\n2\n< 1 000\n2\n2\n< 1 500\n3\n3\n< 2 000\n3\n4\n< 2 750\n4\n5\n< 3 750\n5\n6\n> 3 750\nOne additional station per 2 million inhabitants\nOne additional station per 2 million inhabitants",
  "extent": "E+W+S+N.I.",
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "F",
      "label": "F1",
      "text": "Substituted by Commission Directive (EU) 2015/1480 of 28 August 2015 amending several annexes to Directives 2004/107/EC and 2008/50/EC of the European Parliament and of the Council laying down the rules concerning reference methods, data validation and location of sampling points for the assessment of ambient air quality (Text with EEA relevance)."
    },
    {
      "type": "footnote",
      "label": "f1",
      "text": "At least 1 station in areas where exposure of the population to the highest concentrations of ozone is likely to occur. In agglomerations, at least 50 % of the stations shall be located in suburban areas."
    },
    {
      "type": "footnote",
      "label": "f2",
      "text": "1 station per 25 000 km 2 for complex terrain is recommended."
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/eudr/2008/50/annex/IX/division/A",
    "retrieved_at": "2026-11-01T15:22:21.245568+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."
}