Chapter 4	PM2.5 Air Quality Table						Table 4-9													

PM25 (ug/m3)	1985	1986	1987	1988	1989	1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000	2001	2002	2003	2004
Max. 24-Hr. Concentration (State)															121.4	119.6	104	82.1	121.2	93.8
Max. 24-Hr. Concentration (Nat)															121.4	119.6	98	82.1	121.2	93.8
98th Percentile of 24-Hr Conc.															85.6	83	74.3	66.3	76.6	72.4
Annual Average (State)																24	25	25.8	24.8	16.6
Avg. of Qtrly. Means (Nat)															31	28.3	31	27.4	24.8	22.1