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| Region | Site | Units | 8-Hour | Hour Of Day | 1-Hour | Hour Of Day |
|---|---|---|---|---|---|---|
| Portland Metro | Carus Spangler Road | ppb | 47.8 | 06 PM | 56.6 | 05 PM |
| Willamette Valley | Eugene Amazon Park | ppb | 39.1 | 05 PM | 46 | 02 PM |
| Willamette Valley | Eugene Saginaw | ppb | 34.7 | 06 PM | 40.7 | 02 PM |
| NE Oregon | Hermiston Municipal Airport | ppb | 46.6 | 06 PM | 54.5 | 05 PM |
| Portland Metro | Portland SE Lafayette | ppb | 41.6 | 06 PM | 51.9 | 04 PM |
| Willamette Valley | Salem State Hospital | ppb | 42.1 | 06 PM | 47.5 | 03 PM |
| Portland Metro | Sauvie Island | ppb | 36.6 | 06 PM | 42.7 | 05 PM |
| SW Oregon | Talent | ppb | 44 | 06 PM | 49.6 | 02 PM |
| Portland Metro | Tualatin Bradbury Court | ppb | 40.9 | 06 PM | 49.7 | 04 PM |
| Willamette Valley | Turner Cascade Junior HS | ppb | 44 | 06 PM | 51.2 | 03 PM |
