Appendix B	Oxides of Nitrogen Maximum Annual Average								Table B-30											

AIR BASIN	1984	1985	1986	1987	1988	1989	1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000	2001	2002	2003
GREAT BASIN VALLEYS*																				
LAKE COUNTY*																				
LAKE TAHOE		0.021	0.021	0.022	0.021	0.023	0.022	0.023	0.020	0.016	0.018	0.015	0.015	0.015	0.012	0.014	0.015	0.015	0.015	0.013
MOJAVE DESERT	0.043	0.047	0.043	0.029	0.044	0.048	0.043	0.060	0.045	0.045	0.048	0.048	0.043	0.044	0.045	0.054	0.051	0.049	0.054	0.050
MOUNTAIN COUNTIES**																				
NORTH COAST										0.026										
NORTH CENTRAL COAST	0.021	0.023	0.020	0.018	0.022	0.021	0.028	0.022	0.021	0.020	0.018	0.017	0.017	0.016	0.015	0.018	0.011		0.011	0.010
NORTHEAST PLATEAU*																				
SOUTH COAST	0.145	0.135	0.129	0.118	0.132	0.137	0.121	0.116	0.122	0.107	0.129	0.108	0.106	0.122	0.119	0.132	0.115	0.102	0.098	0.090
SOUTH CENTRAL COAST	0.070	0.071	0.061	0.029	0.040	0.057	0.045	0.051	0.051	0.049	0.053	0.041	0.042	0.042	0.045	0.047	0.034	0.028	0.027	0.026
SAN DIEGO	0.066	0.070	0.063	0.076	0.080	0.066	0.065	0.058	0.054	0.050	0.051	0.046	0.047	0.049	0.045	0.055	0.056	0.038	0.044	0.040
SAN FRANCISCO BAY AREA***	0.078	0.096	0.079	0.067	0.072	0.082	0.075		0.065	0.069	0.066	0.056	0.054	0.055	0.052	0.057	0.054	0.051	0.046	0.035
SAN JOAQUIN VALLEY	0.058	0.074	0.075	0.064	0.077	0.079	0.078	0.061	0.059	0.063	0.048	0.050	0.052	0.044	0.043	0.052	0.049	0.044	0.045	0.041
SALTON SEA	0.021	0.027	0.025	0.023	0.028	0.030	0.026	0.027		0.025	0.026	0.032	0.028	0.024	0.022	0.037	0.041	0.029	0.033	0.028
SACRAMENTO VALLEY	0.048	0.050	0.045	0.039	0.046	0.053	0.058	0.055	0.042	0.049	0.047	0.043	0.045	0.041	0.043	0.047	0.044	0.038	0.042	0.040

*  No NOx data available																				
** No Valid Annual Averages																				
***SFB NOx for 1994-2003 was calculated using hourly NO + NO2																				
"Representative Days: The data collected must be representative according to the following definition.  There must be no more than two missing hours in any of the three consecutive eight hour periods within a day.  For an entire day, no more than two consecutive"																				
"hours can be missed.  Therefore, for an entire day, if there were three consecutive hours missed, the day would be invalidated.  Representative Days were used for all years except 1994-2003."																				
"Data Represenativeness: For representative statistics computed from all individual values, such as the mean of all hours, 75 percent of the values in the respective period are required.  Data Representativeness of 75% was applied to daily (94-03), monthly, and annual values."