Parameter Classes | Air Quality System | US EPA

{
  "id": "atm_form_66fcad7865237a7d4802",
  "kind": "Form",
  "name": "Parameter Classes | Air Quality System | US EPA",
  "parent_id": null,
  "depth": null,
  "facts": {
    "url": "http://search.epa.gov/epasearch/epasearch",
    "host": "aqs.epa.gov",
    "fields": [
      "querytext",
      "fld",
      "areaname",
      "areacontacts",
      "areasearchurl",
      "typeofsearch",
      "result_template",
      "filter"
    ],
    "on_page": "https://aqs.epa.gov/aqsweb/documents/codetables/parameter_classes.html",
    "form_kind": "web form"
  },
  "source_id": "src_5ad3cc6df1d1e72a55ad",
  "updated_at": "2026-10-13T08:14:22.536Z",
  "type": "Feature",
  "geometry": null,
  "links": {
    "self": "https://miscsubjects.com/atlas/atoms/atm_form_66fcad7865237a7d4802",
    "children": "https://miscsubjects.com/atlas/atoms/atm_form_66fcad7865237a7d4802/children",
    "descendants": "https://miscsubjects.com/atlas/atoms/atm_form_66fcad7865237a7d4802/descendants",
    "inside": "https://miscsubjects.com/atlas/atoms/atm_form_66fcad7865237a7d4802/inside",
    "graph": "https://miscsubjects.com/atlas/graph?start=atm_form_66fcad7865237a7d4802"
  },
  "ancestors": [],
  "children_by_kind": [],
  "edges_out": [],
  "edges_in": [
    {
      "rel": "publishes",
      "id": "atm_site_0c3509f8f404c9fec32d",
      "kind": "GovernmentWebsite",
      "name": "U.S. EPA Web Server",
      "share": null
    }
  ],
  "edges_in_total": 1,
  "external_ids": [],
  "source": {
    "id": "src_5ad3cc6df1d1e72a55ad",
    "url": null,
    "license": "public web pages, robots.txt honoured",
    "read_at": "2026-10-13T23:21:09.844Z",
    "sha256": "208b3244e04e88f503da63917fd963b3f4f5a70528be355db4d5f625a8a28164"
  },
  "observations": [],
  "edges_out_total": 0
}