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 | 2.7 | 2.2 | 2.1 | 2 | 2 | 2 | 1.9 | 1.9 | 1.9 | 1.9 | 2 | 2.9 | 4.5 | 7 | 9.6 | 12.1 | 14 | 15.8 | 16.9 | 17.4 | 18.4 | 18.5 | 18.4 | 18.6 |
Portland Metro | Tualatin Bradbury Court | ppb | 2.1 | 2 | 2 | 2 | 1.9 | 1.8 | 1.7 | 1.6 | 1.6 | 1.7 | 2.1 | 2.5 | 3.2 | 3.9 | 4.6 | 5.1 | 5.7 | 7.1 | 7.6 | 7.6 | 8.6 | 10.6 | 12.2 | 13.5 |