(saa1/saa_pts/)
 
ozone/         Ozone Monitoring Sites and Data (1983 - 1993)
 
     readme/        Directory Information
     metadata/      Metadata
     info/          INFO data base
 
     o3ptm_4        Ozone Monitoring Sites and Index Data for
                    April for 1983 - 1993
     o3ptm_5        Ozone Monitoring Sites and Index Data for May
                    for 1983 - 1993
     o3ptm_6        Ozone Monitoring Sites and Index Data for
                    June for 1983 - 1993
     o3ptm_7        Ozone Monitoring Sites and Index Data for
                    July for 1983 - 1993
     o3ptm_8        Ozone Monitoring Sites and Index Data for
                    August for 1983 - 1993
     o3ptm_9        Ozone Monitoring Sites and Index Data for
                    September for 1983 - 1993
     o3ptm_10       Ozone Monitoring Sites and Index Data for
 
                    October for 1983 - 1993
     o3pts          Ozone Monitoring Sites and Index Data for all
                    seasonal (April - October) averages for
                    1983 - 1993