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 | 19.3 | 20.3 | 21.6 | 22.7 | 20.5 | 18.7 | 16.1 | 13.6 | 10.9 | 8.3 | 7.4 | 8.4 | 11.5 | 15 | 19.3 | 23.4 | 27.3 | 31.3 | 33.5 | 33.7 | 33.8 | 33 | 32.1 | 31.1 |
Portland Metro | Tualatin Bradbury Court | ppb | 13.3 | 11.8 | 11 | 10.5 | 8.8 | 6.3 | 4.1 | 2.2 | 1.9 | 2.9 | 5.4 | 6.3 | 9.9 | 14.1 | 17.6 | 20.1 | 23.1 | 25.8 | 26.7 | 28.5 | 28.2 | 27.7 | 27.7 | 28.2 |