2002 Almanac (page 426)  Table B-14  Carbon Monoxide:  Maximum 1-Hour Concentration (ppm)																				

AIR BASIN	1981	1982	1983	1984	1985	1986	1987	1988	1989	1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000
GREAT BASIN VALLEYS	13	18	14	13	16	11	9	13	12	10	11	11	13	9	10	6	8.2	6.7		4.2
LAKE COUNTY	3								3	6	7									
LAKE TAHOE	25	27	30	23	23	20	19	19	17	18	14	15	13	11.6	9.5	10.4	7.7	7.5	3.2	16.1
MOJAVE DESERT	9	10	13	10	12	9	12	11	13	11	10	9	8	9.1	7.5	8.4	5.9	5.4	10.3	6
MOUNTAIN COUNTIES	30					6	3		6	5	1	6.2	10	9.3	9.3	4.5	6.6	6.7	4.1	5
NORTH CENTRAL COAST	4	6	3	5	6	4	5	6	5	5	4	4	4	4.6	3.2	5.5	4.4	3.8	3.8	3.5
NORTH COAST				6	8	6	4	1	10	9		1	6		5.4	4.8	7.4	4.8	5.2	3.1
NORTHEAST PLATEAU							12	4												
SACRAMENTO VALLEY	17	17	19	18	17	20	15	17	18	17	15	14	12	10.8	9.8	8.7	9.5	7.9	7.7	10
SALTON SEA	6	5	7	4	5	5	5	4	6	5	5	5	6	30.6	32	27	24	23.5	22.9	19.9
SAN DIEGO	15	15	16	16	17	16	14	17	17	18	14	14	11.4	11	9.9	12.4	9.3	10.2	9.9	9.3
SAN FRANCISCO BAY AREA	16	18	17	20	21	20	17	15	19	18	15	12	14	12	10.1	8.8	10.7	8.7	9	9.8
SAN JOAQUIN VALLEY	18	18	17	24	18	21	16	19	23	17	19	13	13	15	12	11	9.9	10.3	11.9	10.1
SOUTH CENTRAL COAST	15	14	16	16	17	18	14	15	11	11	9	12	9	10.7	8.9	12.6	8.2	8.5	8.2	6.2
SOUTH COAST	31	27	31	29	33	27	26	32	31	24	30	28	21	24.9	16.8	22.5	19.2	17	19	13.8