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Arithmetic mean of the daily maximum 1-hour average concentrations over the ozone "season" for OTAG background sites. All concentrations are in ppm units.

 

Location

AIRS ID

Year

Arithmetic Mean
Aroostock Co., ME

23008001

1989

0.044
(NDDN/CASTNet)  

1990

0.041
   

1991

0.043
   

1992

0.041
   

1993

0.039
   

1994

0.043
       
Piscataquis Co., ME

230210002

1994

0.039
   

1995

0.043
   

1996

0.043
       
Calhoun Co., FL

120138001

1989

0.047
(NDDN/CASTNet SUMATRA)  

1990

0.050
   

1991

0.045
   

1992

0.047
   

1993

0.046
   

1994

0.045
       
Geneva Co., AL

010610001

1994

0.042
   

1995

0.048
   

1996

0.047
       
Leon, Co., FL

120730003

1988

0.048
(Tallahassee)  

1995

0.048
   

1996

0.049
       
Cameron Co., TX

480610006

1994

0.035
(Brownsville)  

1995

0.039
   

1996

0.031
       
Steele Co., ND

380910001

1995

0.043
   

1996

0.045
       
Mercer Co., ND

380570102

1989

0.053
   

1990

0.044
   

1991

0.046
   

1992

0.045
   

1993

0.040

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