Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Map of twenty-county metropolitan Atlanta area with population density from 2000 census data. Letters reference monitor locations; the table identifies station name, network, and air pollutants monitored: 1=SO2; 2=NO2/NOx; 3=CO; 4=O3; 5=PM10 mass; 6=PM2.5 mass; 7=PM2.5 composition (EC, OC, NO3−, SO42−).
