¥108 urban communities
¥Cause-specific mortality data from NCHS
–all-cause (non-accidental), CVD, respiratory, COPD,
pneumonia, accidental
¥Weather from NWS
–Temperature, dew point, relative humidity
¥Air pollution data from the EPA
–PM10,
PM2.5, O3, NO2, SO2, CO
¥U.S. Census 1990, 2000