{"query":{"parameter":"any single hazardous air pollutant","place":"US-MO","medium":null,"statistic":null,"kind":null},"searched":{"places":["US-MO","US"],"parameter_keys":["name:any single hazardous air pollutant"],"names_matched":[["any single hazardous air pollutant","name:any single hazardous air pollutant"]],"match":"exact","order":"The place's own instruments first, then each place above it, each in its register's order"},"total":1,"offset":0,"returned":1,"next_offset":null,"rows":[{"id":"74058df6879b971f","parameter":"any single hazardous air pollutant","value":"10","value_num":10,"unit":"tpy","direction":"max","kind":"threshold","medium":"air_emission","level":"national","parameter_key":"name:any single hazardous air pollutant","place":["US"],"conditions":[],"cite":{"instrument":"us_40cfr63_2","title":"40 CFR 63.2 — Definitions (major source of hazardous air pollutants)","issuer":null,"edition":"eCFR 2026-08-01 (versioner API)","source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-01/title-40.xml?part=63&section=63.2","source_sha256":"c69109252c9521cd31b45755731369a860bb1282c273dea5fd6903836effa7c7","fetched_at":"2026-09-25","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"63.2 Major source","page":null,"quote":"10 tons per year or more of any hazardous air pollutant or 25 tons per year or more of any combination of hazardous air pollutants"}}],"next":[{"tool":"check_values","says":"Has your user measured this? check_values sets each of their results beside every row held here, with a verdict and the row's cite.","arguments":{"place":"US-MO"},"needs":{"rows":"Your user's measured results, as their table prints them: [{parameter: \"any single hazardous air pollutant\", value, unit}, ...], any other parameters too."},"post":"/api/v1/check"},{"tool":"read_certificate","says":"Has your user a laboratory certificate? read_certificate reads every row it prints, each with its page, and checks them against these limits.","arguments":{"place":"US-MO"},"needs":{"content_base64":"The laboratory's certificate (PDF) or its XLSX, XLS or CSV export, as base64; or file_url, a public https address of it."},"post":"/api/v1/certificate"}]}