Region | 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 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Portland Metro | Portland SE Lafayette | ppb | 4.8 | 4.2 | 4 | 3.6 | 3.2 | 2.9 | 2.7 | 2.6 | 2.7 | 3.3 | 4.2 | 5.1 | 6.4 | 7.6 | 8.8 | 9.4 | 9.6 | 9 | 8.2 | 7.3 | 6 | 5.2 | 4.4 | 3.7 |
Portland Metro | Tualatin Bradbury Court | ppb | 4 | 3.5 | 3.5 | 3.4 | 3.2 | 2.5 | 1.9 | 1.5 | 1.5 | 1.6 | 2.8 | 4.1 | 5.6 | 7.1 | 8.6 | 9.9 | 10.6 | 10.8 | 9.7 | 8.5 | 7.1 | 5.6 | 4.1 | 2.8 |