{
  "url": "https://openlegislation.uk/air-quality-limit-values-wales-regulations-2002/schedule-5/part-I/paragraph-wrapper15n1",
  "json_url": "https://openlegislation.uk/air-quality-limit-values-wales-regulations-2002/schedule-5/part-I/paragraph-wrapper15n1.json",
  "legislation": "wsi/2002/3183",
  "legislation_title": "The Air Quality Limit Values (Wales) Regulations 2002",
  "legislation_url": "https://openlegislation.uk/air-quality-limit-values-wales-regulations-2002",
  "path": "schedule/5/part/I/paragraph/wrapper15n1",
  "kind": "paragraph",
  "number": null,
  "heading": null,
  "text": "The accuracy of the measurement is defined as laid down in the “Guide to the Expression of Uncertainty of Measurements\" (ISO 1993) or in ISO 5725-1 “Accuracy (trueness and precision) of measurement methods and results\" (ISO 1994) . The percentages in the table are given for individual measurements averaged, over the period considered, by the limit value, for a 95% confidence interval (bias + two times the standard deviation). The accuracy for continuous measurements should be interpreted as being applicable in the region of the appropriate limit value.",
  "extent": "E+W",
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "M",
      "label": "M1",
      "text": "Copies of this International Standards Organisation publication can be purchased from the British Standards Institution “BSI\" sales department either by telephone on 020-8996-9001 or by post from the BSI, Standards House, 389 Chiswick High Road, London W4 4AL."
    },
    {
      "type": "M",
      "label": "M2",
      "text": "Copies of this International Standards Organisation publication can be purchased from the British Standards Institution “BSI\" as for footnote (a) above."
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/wsi/2002/3183/schedule/5/part/I/paragraph/wrapper15n1",
    "retrieved_at": "2026-10-29T00:12:37.924889+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."
}