{"query":{"parameter":"1 3 butadiene","place":"CA-QC","medium":null,"statistic":null,"kind":null},"searched":{"places":["CA-QC","CA"],"parameter_keys":["cas:106-99-0","cas:87-68-3","cas:36038-53-6","cas:69102-90-5","cas:68441-52-1","cas:1515-76-0","cas:67280-69-7","cas:126-99-8","cas:127883-08-3","cas:91053-01-9","cas:78-79-5"],"names_matched":[["1 3 butadiene","cas:106-99-0"],["1 3 butadiene 1 1 2 3 4 4 hexachloro","cas:87-68-3"],["1 3 butadiene 1 1 4 4 tetrachloro","cas:36038-53-6"],["1 3 butadiene homopolymer hydroxy terminated","cas:69102-90-5"],["1 3 butadiene homopolymer oligomeric","cas:68441-52-1"],["1 acetoxy 1 3 butadiene","cas:1515-76-0"],["2 bromo 1 1 3 4 4 pentachloro 1 3 butadiene","cas:67280-69-7"],["2 chloro 1 3 butadiene","cas:126-99-8"],["benzene diethenyl polymer with 2 methyl 1 3 butadiene hydrogenated","cas:127883-08-3"],["chloro 1 3 butadiene","cas:126-99-8"],["chloro 1 3 butadiene 2","cas:126-99-8"],["chloro 1 3 butadiene 2 chloroprene","cas:126-99-8"],["hexachloro 1 3 butadiene","cas:87-68-3"],["hydrocarbons c4 1 3 butadiene free polymd triisobutylene fraction","cas:91053-01-9"],["butadiene 2 methyl 1 3 isoprene","cas:78-79-5","butadiene 1 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":23,"names":["hexachlorobuta-1,3-diène","Hexachlorobutadiène","1,1,4,4-Tetrachlorobuta-1,3-diene","Polybutadiène a bouts hydroxylés","1,3-Butadiene homopolymer oligomeric","1-Acetoxy-1,3-butadiene","2-Bromo-1,1,3,4,4-pentachloro-1,3-butadiene","beta-Chloroprène"],"says":"23 rows share a parameter key with a longer name holding \"1 3 butadiene\" but are printed under names without these words (that key is wider than the name), or keyed to a CAS number \"1 3 butadiene\" does not name (another substance, whatever words its name holds): not sent. Ask for one by its name or CAS number."}},"total":4,"offset":0,"returned":4,"next_offset":null,"rows":[{"id":"12386a27740c5c0f","parameter":"1,3-Butadiène","value":"352","value_num":352,"unit":"µg/m³","statistic":"four_minute_avg","direction":"max","kind":"guideline","medium":"ambient_air","level":"regional","parameter_key":"cas:106-99-0","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":"3102da1e7008a76d","parameter":"1,3-Butadiène","value":"2","value_num":2,"unit":"µg/m³","statistic":"four_minute_avg","direction":"max","kind":"printed_reference","medium":"ambient_air","level":"regional","parameter_key":"cas:106-99-0","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"}},{"id":"6883c611bc5fe388","parameter":"1,3-Butadiène","value":"0.5","value_num":0.5,"unit":"µg/m³","statistic":"annual_avg","direction":"max","kind":"guideline","medium":"ambient_air","level":"regional","parameter_key":"cas:106-99-0","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":"65bd048ea4ad0897","parameter":"1,3-Butadiène","value":"0.14","value_num":0.14,"unit":"µg/m³","statistic":"annual_avg","direction":"max","kind":"printed_reference","medium":"ambient_air","level":"regional","parameter_key":"cas:106-99-0","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 3 butadiene\", 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"}]}