{"query":{"parameter":"1 butene","place":"CA-QC","medium":null,"statistic":null,"kind":null},"searched":{"places":["CA-QC","CA"],"parameter_keys":["cas:106-98-9","cas:56631-01-7","cas:34973-39-2","cas:7415-31-8","cas:764-41-0","cas:563-78-0","cas:558-37-2","cas:760-21-4","cas:563-46-2","cas:18085-02-4","cas:760-23-6","cas:563-45-1","cas:1476-11-5","cas:94796-72-2","cas:9003-28-5","cas:110-57-6","cas:692-49-9","cas:110-64-5"],"names_matched":[["1 butene","cas:106-98-9"],["1 1 2 3 3 4 hexachloro 1 butene","cas:56631-01-7"],["1 1 3 3 4 4 hexachloro 1 butene","cas:34973-39-2"],["1 3 dichloro 2 butene","cas:7415-31-8"],["1 4 dichloro 2 butene","cas:764-41-0"],["1 butene 2 3 dimethyl","cas:563-78-0"],["1 butene 3 3 dimethyl","cas:558-37-2"],["2 3 dimethyl 1 butene","cas:563-78-0"],["2 ethyl 1 butene","cas:760-21-4"],["2 methyl 1 butene","cas:563-46-2"],["3 3 dimethyl 1 butene","cas:558-37-2"],["3 4 diacetoxy 1 butene","cas:18085-02-4"],["3 4 dichloro 1 butene","cas:760-23-6"],["3 methyl 1 butene","cas:563-45-1"],["cis 1 4 dichloro 2 butene","cas:1476-11-5"],["dichloro 1 4 butene 2","cas:764-41-0"],["e 1 2 3 3 4 pentachloro 1 butene","cas:94796-72-2"],["methyl 1 butene 2","cas:563-46-2"],["poly 1 butene","cas:9003-28-5"],["trans 1 4 dichloro 2 butene","cas:110-57-6"],["trans 1 4 dichloro 2 butene","cas:764-41-0"],["2 butene 1 1 1 4 4 4 hexafluoro 2z","cas:692-49-9","butene 1"],["2 butene 1 4 diol","cas:110-64-5","butene 1"],["dichloro 2 butene 1 4","cas:764-41-0","butene 1"],["dichloro 2 butene 1 4 trans","cas:110-57-6","butene 1"],["dichloro 2 butene cis 1 4","cas:1476-11-5","butene 1"],["dichloro 2 butene trans 1 4","cas:110-57-6","butene 1"]],"match":"exact+contains","order":"The place's own instruments first, then each place above it, each in its register's order","not_sent":{"rows":30,"names":["1,1,2,3,3,4-Hexachloro-1-butene","1,1,3,3,4,4-Hexachloro-1-butene","1,3-Dichloro-2-butene","Dichloro-1,4 butène-2","2,3-Dimethyl-1-butene","3,3-Dimethyl-1-butene","2-Ethyl-1-butene","2-Méthylbut-1-ène"],"says":"30 rows share a parameter key with a longer name holding \"1 butene\" but are printed under names without these words (that key is wider than the name), or keyed to a CAS number \"1 butene\" does not name (another substance, whatever words its name holds): not sent. Ask for one by its name or CAS number."}},"total":2,"offset":0,"returned":2,"next_offset":null,"rows":[{"id":"622e0a978ade6ff2","parameter":"Butène-1","value":"829","value_num":829,"unit":"µg/m³","statistic":"four_minute_avg","direction":"max","kind":"guideline","medium":"ambient_air","level":"regional","parameter_key":"cas:106-98-9","place":["CA-QC"],"conditions":[],"cite":{"instrument":"ca_qc_air","title":"MELCCFP — Normes et critères québécois de qualité de l'atmosphère (version 11)","issuer":null,"edition":"Version 11","source_url":"https://environnement.gouv.qc.ca/air/criteres/normes-criteres-qualite-atmosphere.xlsx","source_sha256":null,"fetched_at":null,"source_status":{"checked":"2026-10-15","status":"not verified"},"section":null,"page":null,"quote":null,"column":"valeur"}},{"id":"6dc913fc6b901001","parameter":"Butène-1","value":"0","value_num":0,"unit":"µg/m³","statistic":"four_minute_avg","direction":"max","kind":"printed_reference","medium":"ambient_air","level":"regional","parameter_key":"cas:106-98-9","place":["CA-QC"],"conditions":[],"cite":{"instrument":"ca_qc_air","title":"MELCCFP — Normes et critères québécois de qualité de l'atmosphère (version 11)","issuer":null,"edition":"Version 11","source_url":"https://environnement.gouv.qc.ca/air/criteres/normes-criteres-qualite-atmosphere.xlsx","source_sha256":null,"fetched_at":null,"source_status":{"checked":"2026-10-15","status":"not verified"},"section":null,"page":null,"quote":null,"column":"concentration_initiale"}}],"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":"CA-QC"},"needs":{"rows":"Your user's measured results, as their table prints them: [{parameter: \"1 butene\", 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":"CA-QC"},"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"}]}