{"query":{"parameter":"sulfuric acid mist","place":"US-NH","medium":null,"statistic":null,"kind":null},"searched":{"places":["US-NH","US"],"parameter_keys":["name:sulfuric acid mist"],"names_matched":[["sulfuric acid mist","name:sulfuric acid mist"]],"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":"6e7722ab04f7eda7","parameter":"Sulfuric acid mist","value":"7","value_num":7,"unit":"tpy","direction":"max","kind":"threshold","medium":"air_emission","level":"national","parameter_key":"name:sulfuric acid mist","place":["US"],"conditions":[],"cite":{"instrument":"us_40cfr52_21","title":"40 CFR 52.21 — Prevention of significant deterioration of air quality","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=52&section=52.21","source_sha256":"857e290109cd8028b70b239ab2b16e9c5d068a71e557a7c419ebba4dee2c40b4","fetched_at":"2026-09-25","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"52.21(b)(23)(i)","page":null,"quote":"Sulfuric acid mist: 7 tpy"}}],"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-NH"},"needs":{"rows":"Your user's measured results, as their table prints them: [{parameter: \"sulfuric acid mist\", 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-NH"},"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"}]}