7-6 Highway Vehicle Air Pollutant Emissions: 1990-2012
Table Version | Excel
Index: 1990 = 1.0Key: PM-10 = airborne particulates of less than 10 microns; PM-2.5 = airborne particulates of less than 2.5 microns.
Notes: Data for 2008 and later years may not be comparable to previous years due...