Highest Ozone
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| County | Site | Units | 8-Hour | Hour of Day | 1-Hour | Hour of Day |
|---|---|---|---|---|---|---|
| Ashland | Bad River Tribal School | ppb | 28.8 | 06 PM | 31.9 | 04 PM |
| Kenosha | Chiwaukee Prairie | ppb | 33.6 | 09 PM | 36.3 | 08 PM |
| Eau Claire | Eau Claire DOT Sign Shop | ppb | 34.3 | 06 PM | 37.5 | 04 PM |
| Dodge | Horicon Wildlife Area | ppb | 37.9 | 06 PM | 41.1 | 03 PM |
| Kenosha | Kenosha-Water Tower | ppb | 31.4 | 07 PM | 33.3 | 06 PM |
| Forest | Potawatomi | ppb | 29.1 | 04 PM | 30.3 | 03 PM |