California Air Resources Board California Map with County Boundaries
Ozone Data Summaries (1980-1998)
Kern County Portion
of the San Joaquin Valley Air Basin
Year Number of Days Standard Exceeded Ozone Concentrations in ppm
1 hour 8 hour
State
1hr
Federal
1hr
Federal
8hr
Max
1hr
3 Year
4th High*
EPDC*
Max
8hr
3 Year Avg
4th High*
1998 80 29 73 0.17 0.16 0.162 0.136 0.115
1997 66 8 55 0.15 0.16 0.167 0.118 0.115
1996 114 44 109 0.17 0.17 0.164 0.137 0.119
1995 115 38 104 0.17 0.17 0.163 0.134 0.119
1994 114 37 101 0.18 0.16 0.154 0.129 0.111
1993 110 37 98 0.16 0.16 0.154 0.125 0.112
1992 106 10 100 0.15 0.16 0.160 0.115 0.115
1991 119 37 107 0.16 0.16 0.166 0.120 0.118
1990 120 37 96 0.17 0.16 0.162 0.123 0.119
1989 132 42 112 0.18 0.17 0.168 0.136 0.120
1988 134 56 124 0.17 0.17 0.169 0.127 0.118
1987 124 46 112 0.17 0.16 0.166 0.131 0.118
1986 99 33 94 0.16 0.16 0.162 0.126 0.114
1985 112 27 90 0.16 0.16 0.163 0.121 0.111
1984 81 26 71 0.17 0.16 0.164 0.121 0.109
1983 66 20 61 0.16 0.17 0.171 0.113 0.114
1982 76 21 64 0.18 0.17 0.146 0.133 0.119
1981 107 50 74 0.18 0.17 0.143 0.148 0.127
1980 84 23 73 0.17 0.15 0.152 0.134 0.115
* The 3 year 4th high, 3 year average 4th high, and Expected Peak Day Concentration (EPDC) are calculated based on data for 3 successive years, listed by the last year of the three year period.  The EPDC represents the ozone concentration expected to occur once per year.
   

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This page last revised on March 26, 1999

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