{"query":{"parameter":"barium","place":"US-LA","medium":null,"statistic":null,"kind":null},"searched":{"places":["US-LA","US"],"parameter_keys":["cas:7440-39-3"],"names_matched":[["barium","cas:7440-39-3"]],"match":"exact","order":"The place's own instruments first, then each place above it, each in its register's order"},"total":12,"offset":0,"returned":12,"next_offset":null,"rows":[{"id":"342db4e601065540","parameter":"Barium (and compounds) [1]","value":"37.5","value_num":37.5,"unit":"lb/yr","direction":"max","kind":"threshold","medium":"air_emission","level":"regional","parameter_key":"cas:7440-39-3","place":["US-LA"],"conditions":["the source is a major source of toxic air pollutants (5103)"],"cite":{"instrument":"us_la_lac33_iii_5112","title":"LAC 33:III.5112 — Toxic air pollutants: minimum emission rates (Table 51.1) and ambient air standards (Table 51.2)","issuer":null,"edition":"LII transcription of LAC 33:III.5112 (fetched 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