{"data":{"id":"us/40-cfr-table-c-2-to-subpart-c-of-part-53","jurisdiction":"us","citation":"40 CFR Table C-2 to Subpart C of Part 53","heading":"Table C-2 to Subpart C of Part 53—Sequence of Test Measurements","body":"Measurement Concentration range\nFirst set Second set\n1 Low Medium.\n2 High High.\n3 Medium Low.\n4 High High.\n5 Low Medium.\n6 Medium Low.\n7 Low Medium.\n8 Medium Low.\n9 High High.\n10 Medium Low.\n11 High Medium.\n12 Low High.\n13 Medium Medium.\n14 Low High.\n15 Low.\n16 Medium.\n17 Low.\n18 High.","path":["Title 40—Protection of Environment","CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY","SUBCHAPTER C—AIR PROGRAMS","PART 53—AMBIENT AIR MONITORING REFERENCE AND EQUIVALENT METHODS","Subpart C—Procedures for Determining Comparability Between Candidate Methods and Reference Methods"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-40.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:04Z","sha256":"98c3b242fe511e4b0e89a96973d8fc261b7e1f018188515a819476ddc8d6bcfd","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-table-c-1-to-subpart-c-of-part-53","next":"us/40-cfr-table-c-3-to-subpart-c-of-part-53"},"notice":"GroundRules: Original legal text. Not legal advice."}