(saa1/saa_pts/)
 
pm_mon/        Particulate Matter Monitoring Sites
 
     readme/        Directory Information
     metadata/      Metadata
     info/          INFO data base
 
     anntsp         Annual Total Suspended Particulates
     annpm10        Annual Particulate Matter (PM10)
     qttsp          Quarterly Total Suspended Particulates
     qtpm10         Quarterly Particulate Matter (PM10)