5-2 Index of Key Air Pollutant Emissions from U.S. Transportation: 1990-2008
5-2 Index of Key Air Pollutant Emissions from U.S. Transportation: 1990-2008Excel | CSV | Graphic Version
Index: 1990 = 1.0
Year Carbon monoxide Nitrogen oxide Volatile organic compounds PM-10 PM-2.5 Surfur dioxide Ammonia 1990 1.00 1.00 1.00 1.00 1.00...