2002 Almanac (page 154)  Table 4-14  San Francisco Bay Area Air Basin:  PM10 Air Quality Table																				

PM10 (ug/m3)	1981	1982	1983	1984	1985	1986	1987	1988	1989	1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000
Max. 24-Hour Concentration								146	150	173	155	112	101	97	74	76	95	92	114	76
Max. Annual Geometric Mean								34.6	34.4	33	31.5	29.5	25.1	24.8	22.1	22.1	23.7	22.5	25.4	23.7
Calc Days Above State 24-Hr Std								78	84	72	90	78	48	42	24	12	18	18	36	42
Calc Days Above Nat 24-Hr Std								0	0	6	3	0	0	0	0	0	0	0	0	0