{
  "url": "https://openlegislation.uk/air-quality-regulations-1997/schedule/paragraph-10",
  "json_url": "https://openlegislation.uk/air-quality-regulations-1997/schedule/paragraph-10.json",
  "legislation": "uksi/1997/3043",
  "legislation_title": "The Air Quality Regulations 1997",
  "legislation_url": "https://openlegislation.uk/air-quality-regulations-1997",
  "path": "schedule/paragraph/10",
  "kind": "paragraph",
  "number": "10",
  "heading": "Interpretation",
  "text": "An hourly mean is a mean calculated every hour. The hourly mean for a particular substance at a particular location for a particular hour is the mean of the levels recorded, at a frequency of not less than once every 10 seconds, for that substance at that location during that hour.",
  "extent": null,
  "status": null,
  "version": "current",
  "annotations": [],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/uksi/1997/3043/schedule/paragraph/10",
    "retrieved_at": "2026-10-29T11:40:04.923689+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."
}