2009 Ozone Air Quality Table "Table 2-8, Page 2-17" Area Design Values Exceedance Days Percent above Standard South Coast Air Basin 0.122 108 63% 0.452380952 0.084 San Joaquin Valley 0.107 110 43% 0.273809524 0.084 Sacramento Metro Area 0.098 38 31% 0.166666667 0.084 Ventura 0.088 21 17% 0.047619048 0.084 San Diego 0.089 27 19% 0.05952381 0.084 San Francisco Bay Area 0.077 2 3% -0.083333333 0.084 Western Nevada 0.095 37 27% 0.130952381 0.084 Central Mountain Counties 0.090 6 20% 0.071428571 0.084 Southern Mountain Counties 0.085 35 13% 0.011904762 0.084 Eastern Kern 0.085 6 13% 0.011904762 0.084 Coachella Valley 0.101 63 35% 0.202380952 0.084 Antelope Valley and Western Mojave Desert 0.103 96 37% 0.226190476 0.084 Imperial 0.087 27 16% 0.035714286 0.084 Butte County 0.084 12 12% 0 0.084 Sutter Buttes 0.081 7 8% -0.035714286 0.084