Chapter 4	PM2.5 Air Quality Table						Table 4-48													

PM2.5 (ug/m3)	1988	1989	1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007
Max. 24-Hr. Concentration (State)												64.3	66.3	60.0	53.6	239.2	67.3	44.1	63.3	151.0
Max. 24-Hr. Concentration (Nat)												64.3	66.3	60.0	53.6	239.2	67.3	44.1	63.3	126.2
98th Percentile of 24-Hr Conc.												45.1	48.7	40.8	39.3	46.9	37.4	30.2	28.4	37.7
Annual Average (State)															15.5	14.4	14.1		13.1	13.3
Avg. of Qtrly. Means (Nat)												18	15.8	17.7	16.0	15.5	14.1	11.8	13.1	13.3