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 | 47.5 | 08 PM | 51.1 | 03 PM |
| Kenosha | Chiwaukee Prairie | ppb | 59.9 | 07 PM | 65.4 | 01 PM |
| Eau Claire | Eau Claire DOT Sign Shop | ppb | 43 | 12 AM | 45.1 | 09 PM |
| Dodge | Horicon Wildlife Area | ppb | 56.8 | 07 PM | 59.6 | 05 PM |
| Kenosha | Kenosha-Water Tower | ppb | 63.3 | 05 PM | 69.7 | 12 PM |
| Forest | Potawatomi | ppb | 41.4 | 01 AM | 43.2 | 10 PM |