California Air Resources Board California Map with County Boundaries
Ozone Data Summaries (1980-1998)
Inyo County
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 0 0 1 0.09 0.09 0.092 0.085 0.079
1997 0 0 0 0.08 0.09   0.080 0.074
1996 1 0 0 0.10 0.09   0.082 0.076
1995 0 0 0 0.09 0.09   0.073 0.064
1994 2 0 3 0.10 0.09   0.089 0.068
1993 0 0 0 0.08 0.08   0.077 0.060
1992 0 0 0 0.08 0.08   0.076 0.055
1991 0 0 0 0.05 0.04   0.041 0.040
1981 0 0 0 0.08 0.08   0.073 0.067
1980 1 0 0 0.10 0.08   0.071 0.065
* 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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