{"query":{"parameter":"butene","place":"CA-QC","medium":null,"statistic":null,"kind":null},"searched":{"places":["CA-QC","CA"],"parameter_keys":["cas:25167-67-3","cas:56631-01-7","cas:34973-39-2","cas:7415-31-8","cas:764-41-0","cas:106-98-9","cas:563-78-0","cas:558-37-2","cas:563-79-1","cas:692-49-9","cas:110-64-5","cas:760-21-4","cas:563-46-2","cas:513-35-9","cas:768-00-3","cas:18085-02-4","cas:760-23-6","cas:563-45-1","cas:624-64-6","cas:590-18-1","cas:1476-11-5","cas:110-57-6","cas:94796-72-2","cas:9003-28-5"],"names_matched":[["butene","cas:25167-67-3"],["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","cas:106-98-9"],["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 3 dimethyl 2 butene","cas:563-79-1"],["2 butene 1 1 1 4 4 4 hexafluoro 2z","cas:692-49-9"],["2 butene 1 4 diol","cas:110-64-5"],["2 butene 2 3 dimethyl","cas:563-79-1"],["2 ethyl 1 butene","cas:760-21-4"],["2 methyl 1 butene","cas:563-46-2"],["2 methyl 2 butene","cas:513-35-9"],["2 phenyl 2 butene","cas:768-00-3"],["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"],["butene 1","cas:106-98-9"],["butene 2 trans","cas:624-64-6"],["butene cis 2","cas:590-18-1"],["butene trans 2","cas:624-64-6"],["cis 1 4 dichloro 2 butene","cas:1476-11-5"],["cis 2 butene","cas:590-18-1"],["cis butene 2","cas:590-18-1"],["dichloro 1 4 butene 2","cas:764-41-0"],["dichloro 2 butene 1 4","cas:764-41-0"],["dichloro 2 butene 1 4 trans","cas:110-57-6"],["dichloro 2 butene cis 1 4","cas:1476-11-5"],["dichloro 2 butene trans 1 4","cas:110-57-6"],["e 1 2 3 3 4 pentachloro 1 butene","cas:94796-72-2"],["methyl 1 butene 2","cas:563-46-2"],["methyl 2 butene 2","cas:513-35-9"],["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"],["trans 2 butene","cas:624-64-6"],["trans 2 phenyl 2 butene","cas:768-00-3"]],"match":"exact+contains","order":"The place's own instruments first, then each place above it, each in its register's order","not_sent":{"rows":42,"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","Butène-1","2,3-Dimethyl-1-butene","3,3-Dimethyl-1-butene","2,3-Dimethyl-2-butene"],"says":"42 rows share a parameter key with a longer name holding \"butene\" but are printed under names without these words (that key is wider than the name), or keyed to a CAS number \"butene\" does not name (another substance, whatever words its name holds): not sent. Ask for one by its name or CAS number."}},"total":1,"offset":0,"returned":1,"next_offset":null,"rows":[{"id":"b0b16a8da2c1a2d4","parameter":"Butène normal","value":"0.8","value_num":0.8,"unit":"µg/m³","statistic":"annual_avg","direction":"max","kind":"guideline","medium":"ambient_air","level":"regional","parameter_key":"cas:25167-67-3","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"}}],"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: \"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"}]}