Chapter 4	PM2.5 Air Quality Table						Table 4-62													

PM25 (ug/m3)	1987	1988	1989	1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006
Max. 24-Hr. Concentration (State)												96.0	108.0	123.1	128.2	96.1	73.2	76.3	82.7	78.6
Max. 24-Hr. Concentration (Nat)												96.0	108.0	98.0	78.0	91.0	65.0	65.0	80.0	78.0
98th Percentile of 24-Hr Conc.												96.0	84.0	81.0	56.0	63.0	43.0	54.0	54.0	59.0
Annual Average (State)													17.5	15.8	11.9	15.1	15.9	16.5	13.8	15.2
Avg. of Qtrly. Means (Nat)													19.9	15.8	13.0	15.1	12.3	15.1	12.3	13.2