Chapter 4	San Francisco Bay Area Carbon Monoxide Air Quality Table						Table 4-18													

CARBON MONOXIDE (ppm)	1983	1984	1985	1986	1987	1988	1989	1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000	2001	2002
Peak 8-Hr. Indicator	11.9	11.9	13.9	14.0	13.4	10.7	11.8	12.6	12.4	11.1	9.3	8.1	7.8	7.4	6.5	6.7	6.5	7.1	6.9	6.0
Max. 1-Hr. Concentration	17.0	20.0	21.0	20.0	17.0	15.0	19.0	18.0	15.0	12.0	14.0	12.0	10.1	8.8	10.7	8.7	9.0	9.8	7.6	7.7
Max. 8-Hr. Concentration	10.6	12.1	16.1	12.6	10.0	12.8	12.0	11.0	11.0	7.8	7.9	8.8	5.8	7.0	6.1	6.3	6.3	7.0	5.1	5.1
Days Above State 8-Hr. Std.	4	8	24	8	2	4	10	4	5	0	0	0	0	0	0	0	0	0	0	0
Days Above Nat. 8-Hr. Std.	4	7	21	8	1	4	9	2	4	0	0	0	0	0	0	0	0	0	0	0