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| Oklahoma Department of Environmental Quality |
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NO2 through December 28, 2023 |
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One hour daily maximum (ppb) |
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Site |
2020 |
2021 |
2022 |
1st |
2nd |
3rd |
4th |
5th |
6th |
7th |
8th |
20-22 Avg |
20-22 Avg |
2023 |
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98th % |
98th % |
98th % |
(date) |
(date) |
(date) |
(date) |
(date) |
(date) |
(date) |
(date) |
98% |
98% |
Critical Value |
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OKC Near Road (097) |
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44.0 |
43.0 |
43.0 |
42.0 |
42.0 |
41.0 |
41.0 |
40.0 |
45.0 |
44.0 |
211.0 |
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43.0 |
47.0 |
45.0 |
28-Feb |
3-Mar |
21-Aug |
29-Mar |
20-Oct |
21-Oct |
13-Nov |
26-Sep |
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OKC North (1037) |
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31.0 |
31.0 |
31.0 |
31.0 |
30.0 |
29.0 |
29.0 |
29.0 |
41.3 |
39.0 |
215.0 |
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36.0 |
44.0 |
44.0 |
5-Jan |
5-Jan |
17-Apr |
19-Oct |
17-Apr |
5-Jan |
10-Jan |
10-Jan |
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Tulsa Central (1127) |
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40.9 |
38.4 |
34.5 |
34.5 |
34.3 |
33.8 |
33.7 |
33.3 |
38.7 |
38.1 |
222.0 |
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35.0 |
40.5 |
40.5 |
10-Jan |
10-Jan |
17-Feb |
28-Nov |
13-Nov |
6-Jan |
10-Jan |
14-Nov |
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8th
Highs are considered 98th percentile until end of year data completeness can
be calculated. |
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