Oklahoma Department of Environmental Quality
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2019 OKLAHOMA SO2
Highest 1 Hour Daily Highs (ppb) through May 21, 2019
   
Site          2019 Daily Max 1-hr Values   3 Year Avg of 99th Percentile
2016 2017 2018 1st 2nd 3rd 4th* 16-18 Avg 17-19 Avg 2019
99th % 99th %  99th % (date) (date)  (date)  (date) 99th % 99th % Critical Value
  Ponca City  (604)   35.0 26.0 25.0 23.0 29 28 168
27.0 29.0 31.0 6-Jan 15-Apr 13-Feb 10-Apr      
  OKC (North) (1037) 1.0 1.0 1.0 1.0 2.7 2.0 223
3.0 2.0 3.0 2-Jan 4-Jan 23-Jan 24-Jan    
  Tulsa Newblock  (175) 16.0 8.0 6.0 5.0 13 9 206
17.0 14.0 8.0 16-Jan 28-Apr 29-Apr 21-Apr      
  Tulsa TCWD (235) 9.0 5.0 3.0 3.0 11 8 208
12.0 14.0 6.0 9-Jan 8-Jan 10-Jan 10-Mar    
  Tulsa Central (1127) 3.9 3.7 2.7 2.5 4 3 221
4.1 3.8 3.3 10-Mar 20-Apr 12-Apr 13-Feb      
  Tulsa Riverside (179) 6.0 5.0 5.0 4.0 5 5 218
5.0 6.0 4.0 19-Mar 10-Apr 11-Apr 16-Jan    
  Oxbow/Kremlin (555) 33.0 32.0 26.0 24.0   40 131
new in 2017 54.0 43.0 13-Apr 24-Feb 14-Feb 10-May      
  Fort Gibson (170) 8.0 6.0 5.0 5.0   29 145
new in 2017 52.0 31.0 26-Feb 13-Feb 20-Jan 14-Feb    
  Pryor (188)   17.0 17.0 16.0 16.0   22 178
new in 2017 25.0 25.0 14-Feb 14-May 7-Jan 11-Apr      
* 4th Highs are considered 99th percentile until end of year data completeness can be calculated.