| County | Site | Units | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Ashland | Bad River Tribal School | ppb | 41.2 | 40.8 | 40.2 | 39.7 | 38.7 | 37.2 | 35.5 | 33.8 | 33.4 | 33.6 | 34.2 | 35.1 | 36.6 | 38.8 | 41.2 | 43.6 | 44.7 | 45.1 | 45.5 | 45.7 | 45.5 | 44.9 | 44.1 | 42.8 |
| Brown | Green Bay UW | ppb | 41.2 | 41.3 | 41.3 | 41.2 | 40.6 | 38.1 | 34.5 | 32.1 | 32 | 32.2 | 32.5 | 32.9 | 33.5 | 35.8 | 39.1 | 41.7 | 41.9 | 41.9 | 41.8 | 41.7 | 41.5 | 41 | 40.6 | 40 |
| Columbia | Columbus | ppb | 38 | 37.3 | 36.6 | 36.4 | 36.2 | 35.9 | 35.3 | 34.7 | 34.2 | 34.4 | 34.7 | 34.5 | 34.5 | 35 | 35.3 | 35.6 | 35.2 | 33.6 | 31.4 | 30.1 | 28.3 | 26.1 | 24.3 | 22.7 |
| Dane | Madison East | ppb | 40.3 | 40.1 | 39.9 | 39.6 | 38.6 | 37.8 | 35.9 | 33.9 | 32.6 | 31.8 | 31.1 | 30.7 | 31.3 | 31.8 | 33 | 33.6 | 33.3 | 31.5 | 28.7 | 25.7 | 22.9 | 20 | 17.3 | 14.3 |
| Dodge | Horicon Wildlife Area | ppb | 40.1 | 39.7 | 39.4 | 38.7 | 38 | 37.2 | 36.3 | 35.2 | 34.3 | 33.3 | 32.5 | 32.6 | 33.2 | 33.7 | 34.2 | 35 | 35.6 | 36 | 36 | 34.9 | 33.2 | 31.6 | 30.5 | 29.4 |
| Door | Newport Park | ppb | 44 | 44.3 | 44.6 | 44.7 | 44.9 | 44.9 | 44.8 | 44.6 | 44.3 | 44.1 | 43.8 | 43.6 | 43.4 | 43.5 | 43.6 | 43.8 | 44.3 | 44.7 | 45.2 | 45.6 | 46 | 46.2 | 46.3 | 46.3 |
| Eau Claire | Eau Claire DOT Sign Shop | ppb | 30 | 27.3 | 25.4 | 24.8 | 24.7 | 25 | 25.5 | 26.6 | 28.8 | 30.7 | 28.8 | 28.5 | ||||||||||||
| Fond du Lac | Fond Du Lac | ppb | 38.4 | 38.5 | 38.8 | 39.1 | 39.5 | 40 | 40 | 39.4 | 38.3 | 37.5 | 36.7 | |||||||||||||
| Forest | Potawatomi | ppb | 42.8 | 43 | 43.2 | 43.5 | 43.7 | 44 | 44.4 | 44.5 | 44.7 | 44.8 | 45.1 | 45.3 | 45.6 | 45.9 | 46.2 | 46.5 | 46.8 | 47 | 47 | 46.4 | 45.8 | 44.9 | 44 | 43.2 |
| Jefferson | Jefferson-Laatsch | ppb | 37.5 | 36.9 | 36.4 | 35.9 | 35.8 | 35.7 | 35.3 | 35 | 35 | 35 | 35.4 | 36.2 | 36.7 | 36.8 | 36.7 | 35.8 | 33.5 | 30.6 | 28.9 | 26.9 | 25 | 23.3 | 22.2 | 21.9 |
| Kenosha | Chiwaukee Prairie | ppb | 37.9 | 37.4 | 36.9 | 36.6 | 36.6 | 36.6 | 36.6 | 36.5 | 37 | 37.7 | 38.7 | 39.7 | 40.9 | 42.1 | 42.2 | 41.8 | 41.3 | 40.7 | 40.1 | 39.7 | 39.2 | 38.4 | 38 | 37.7 |
| Kenosha | Kenosha-Water Tower | ppb | 35.2 | 34.4 | 33.5 | 33.1 | 33 | 32.9 | 32.1 | 31.7 | 30.8 | 31.7 | 33 | 34.3 | 35.8 | 37.2 | 38.1 | 38.2 | 38.6 | 37.9 | 36.9 | 36.2 | 35.6 | 35 | 34.6 | 34.5 |
| Kewaunee | Kewaunee | ppb | 39 | 39.1 | 39.5 | 39.8 | 39.7 | 39.1 | 38.4 | 38 | 38 | 38.1 | 38.6 | 39.1 | 39.7 | 40.8 | 42.1 | 43.1 | 44 | 44.6 | 45 | 45.1 | 44.9 | 44.8 | 44.6 | 43.9 |
| La Crosse | La Crosse DOT | ppb | 30.8 | 27.7 | 26 | 24.1 | 22.4 | 20.7 | 19.6 | 21 | 23.4 | 26.3 | 28.3 | 30.2 | 32 | 33.9 | 35.9 | 37.4 | 37.7 | 37 | 35.3 | 34.2 | 33.1 | 32 | 30.6 | 28.9 |
| Manitowoc | Manitowoc | ppb | 39.4 | 39.3 | 39.2 | 39.3 | 38.9 | 38.3 | 37.1 | 36.5 | 36.6 | 37 | 37.7 | 38.5 | 39.5 | 40.8 | 42.5 | 43.8 | 44.5 | 44.9 | 45.2 | 45.1 | 45.2 | 45.1 | 44.5 | 43.8 |
| Marathon | Lake Dubay | ppb | 43 | 42.8 | 42.5 | 42.1 | 41.9 | 41.7 | 41.6 | 41.5 | 41.5 | 41.3 | 41.3 | 41.4 | 41.4 | 41.5 | 41.5 | 41.3 | 40.9 | 40.2 | 39.3 | 38.5 | 37.8 | 37.3 | 36.7 | 36.1 |
| Milwaukee | Bayside | ppb | 38 | 37.7 | 37.3 | |||||||||||||||||||||
| Milwaukee | Milwaukee-16th St. Health Center | ppb | 35.8 | 35.6 | 35.7 | 35.8 | 35.7 | 35.1 | 34.4 | 33.8 | 33.5 | 33.5 | 33.4 | 33.6 | 33.9 | 34.7 | 35.5 | 36.1 | 35.1 | 33.6 | 32.1 | 31.1 | 30.5 | 29.9 | 29.2 | 28.5 |
| Outagamie | Appleton | ppb | 40 | 40.2 | 40.4 | 40.7 | 41.3 | 41.3 | 41.4 | 40.9 | 39.9 | 39.1 | 38.6 | 38.3 | 38.2 | 38.3 | 38.1 | 38.2 | 38.6 | 38.6 | 38.8 | 38.9 | 38.7 | 38 | 37.4 | 36.4 |
| Ozaukee | Grafton | ppb | 40 | 39.7 | 39.7 | 39.6 | 39.2 | 38.6 | 38.2 | 37.8 | 38.1 | 38.8 | 39.4 | 40.2 | 41.1 | 42.3 | 43.3 | 44.3 | 44.8 | 45 | 44.5 | 43.5 | 42.6 | 41.7 | 40.5 | 39.1 |
| Ozaukee | Harrington Beach Park | ppb | 38.3 | 37.9 | 37.5 | 37.3 | 37.3 | 37.4 | 37.3 | 37.5 | 38.1 | 38.8 | 39.6 | 40.3 | 40.9 | 41.4 | 42.2 | 43.1 | 43.6 | 43.9 | 44 | 43.8 | 43.1 | 42.3 | 41.2 | 39.9 |
| Racine | Racine-Payne & Dolan | ppb | 42.4 | 41.9 | 41.7 | 41.2 | 40.3 | 39.2 | 38.3 | |||||||||||||||||
| Rock | Beloit-Converse | ppb | 22.3 | 20.5 | 18.6 | 15.1 | ||||||||||||||||||||
| Sauk | Devils Lake | ppb | 41.3 | 40.6 | 40 | 39.7 | 39.7 | 39.6 | 39 | 38.5 | 37.9 | 37.2 | 36.8 | 36.4 | 36 | 35.9 | 36.2 | 36.1 | 36 | 35.5 | 34.4 | 32.6 | 29.6 | 26.5 | 23.8 | 21.7 |
| Vilas | Trout Lake | ppb | 45.2 | 45.1 | 44.9 | 44.3 | 43.5 | 42.4 | ||||||||||||||||||
| Waukesha | Waukesha-Cleveland Ave. | ppb | 38.4 | 38.2 | 38.1 | 37.8 | 37.4 | 36.5 | 34.5 | 32.5 | 31.6 | 31.1 | 30.7 | 30.7 | 30.7 | 31.5 | 33.4 | 34.9 | 34.9 | 34 | 32.8 | 31.8 | 31.4 | 30.8 | 30.2 | 29.7 |