1999 Maximum Peak	Number of Days	Number of Days	
	8-Hour Indicator in	in 1999 above	 in 1999 above	
AIR BASIN	parts per Million	State 8-Hour Standard	National 8-Hour Standard	
Great Basin Valleys Air Basin	Incomplete Data	Incomplete Data	Incomplete Data	
Lake County Air Basin	Incomplete Data	Incomplete Data	Incomplete Data	
Lake Tahoe Air Basin	2.3	0	0	
Mojave Desert Air Basin	4.4	0	0	
Mountain Counties Air Basin	5.4	0	0	
North Central Coast Air Basin	2	0	0	
North Coast Air Basin	3.6	0	0	
Northeast Plateau Air Basin	Incomplete Data	Incomplete Data	Incomplete Data	
Sacramento Valley Air Basin	7	0	0	
Salton Sea Air Basin	15.5	13	11	
San Diego Air Basin	5.6	0	0	
San Francisco Bay Area Air Basin	6.5	0	0	
San Joaquin Valley Air Basin	8.5	0	0	
South Central Coast Air Basin	4.5	0	0	
South Coast Air Basin	13.7	11	7