... they had been toldby a doctor or other health professional that they hadthese conditions. To be eligible to provide answers to the questionsabout asthma, respondents first had to answer affirma-tively ... specified monitoring criteria to AQSannual monitoring data resulte d in the inclusion of 1125,1111, 1074 and 1051 monitors for each year from 2002 to 2005, respectively. Figure 1uses2002AQSmonitoringdata ... for itsmonitoring sites. For each monitoring site in the data-base, one of three reference datums (NAD23, NAD84,and W SG84) was u sed to assign lat itude and longitudedata to monitoring sites,...