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Legend (OAR_OAQPS/NAA1997PM25Annual)

PM2.5 Annual 1997 NAAQS State Level (0)
Maintenance (NAAQS revoked) Maintenance (NAAQS revoked)
Nonattainment Nonattainment
PM2.5 Annual 1997 NAAQS National (1)
Maintenance (NAAQS revoked) Maintenance (NAAQS revoked)
Nonattainment Nonattainment