"NOx Emissions (tons/day, annual average)"								"ROG Emissions (tons/day, annual average)"							
County	1975	1980	1985	1990	1995	2000	2005	2010	1975	1980	1985	1990	1995	2000	2005	2010
Imperial	55	47	39	42	45	37	35	34	39	39	32	35	29	28	27	26
Riverside	30	29	33	33	29	25	19	15	30	30	33	40	28	24	20	18


	"PM10 Emissions (tons/day, annual average)"								"CO Emissions (tons/day, annual average)"							
County	1975	1980	1985	1990	1995	2000	2005	2010	1975	1980	1985	1990	1995	2000	2005	2010
Imperial	291	269	214	262	245	253	263	276	248	248	230	257	225	171	150	131
Riverside	22	23	24	31	26	28	28	29	220	210	241	273	215	164	118	94