Canadian and United States
3-Year Average of the 4th Highest 8-Hour Ozone Average
Based on 2001 - 2003 Data
Source: Canadian National Air Pollution Surveillance
Network and AQS database. Mapping engine is
Map Generator v2.0 created by MCNC Environmental Programs funded
by NESCAUM/EPA/MARAMA.
Map provided courtesy of Mr. Tom Dann, Environment Canada.
