Big Piney (US Route 189) WY, US: 42.486668, -110.099167
| Date Observed (UTC) | NOX | NO | NOY | NO2 | NO2Y | SO2 | OZONE | CO | PM10 | PM2.5 | AQI | AQI/500 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| May 15, 2021, 9 p.m. | 1.4 ppb (2) | 0.5 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 47.0 ppb (44) | N/A | N/A | N/A | 44.0 | |
| May 15, 2021, 8 p.m. | 0.9 ppb (1) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 52.0 ppb (49) | N/A | N/A | N/A | 49.0 | |
| May 15, 2021, 7 p.m. | 1.3 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 50.0 ppb (47) | N/A | N/A | N/A | 47.0 | |
| May 15, 2021, 6 p.m. | 0.9 ppb (1) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 46.0 ppb (43) | N/A | N/A | N/A | 43.0 | |
| May 15, 2021, 5 p.m. | 1.0 ppb (1) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 42.0 ppb (39) | N/A | N/A | N/A | 39.0 | |
| May 15, 2021, 4 p.m. | 1.1 ppb (2) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 40.0 ppb (38) | N/A | N/A | N/A | 38.0 | |
| May 15, 2021, 3 p.m. | 1.5 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 38.0 ppb (36) | N/A | N/A | N/A | 36.0 | |
| May 15, 2021, 2 p.m. | 1.4 ppb (2) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 35.0 ppb (33) | N/A | N/A | N/A | 33.0 | |
| May 15, 2021, 1 p.m. | 1.6 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 36.0 ppb (34) | N/A | N/A | N/A | 34.0 | |
| May 15, 2021, noon | 0.8 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 35.0 ppb (33) | N/A | N/A | N/A | 33.0 | |
| May 15, 2021, 11 a.m. | 0.7 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 39.0 ppb (37) | N/A | N/A | N/A | 37.0 | |
| May 15, 2021, 10 a.m. | 0.8 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 38.0 ppb (36) | N/A | N/A | N/A | 36.0 | |
| May 15, 2021, 9 a.m. | 0.8 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 39.0 ppb (37) | N/A | N/A | N/A | 37.0 | |
| May 15, 2021, 8 a.m. | 0.8 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 38.0 ppb (36) | N/A | N/A | N/A | 36.0 | |
| May 15, 2021, 7 a.m. | 0.6 ppb (1) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 41.0 ppb (38) | N/A | N/A | N/A | 38.0 | |
| May 15, 2021, 6 a.m. | 0.7 ppb (1) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 41.0 ppb (38) | N/A | N/A | N/A | 38.0 | |
| May 15, 2021, 5 a.m. | 1.0 ppb (1) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 39.0 ppb (37) | N/A | N/A | N/A | 37.0 | |
| May 15, 2021, 4 a.m. | 0.9 ppb (1) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 38.0 ppb (36) | N/A | N/A | N/A | 36.0 | |
| May 15, 2021, 3 a.m. | 0.9 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 41.0 ppb (38) | N/A | N/A | N/A | 38.0 | |
| May 15, 2021, 2 a.m. | 0.8 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 44.0 ppb (41) | N/A | N/A | N/A | 41.0 | |
| May 15, 2021, 1 a.m. | 0.6 ppb (1) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 48.0 ppb (45) | N/A | N/A | N/A | 45.0 | |
| May 15, 2021, midnight | 0.6 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 52.0 ppb (49) | N/A | N/A | N/A | 49.0 | |
| May 14, 2021, 11 p.m. | 0.5 ppb (1) | 0.1 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | 54.0 ppb (50) | N/A | N/A | N/A | 50.0 | |
| May 14, 2021, 10 p.m. | 0.5 ppb (1) | 0.1 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | 53.0 ppb (50) | N/A | N/A | N/A | 50.0 | |
| May 14, 2021, 9 p.m. | 0.5 ppb (1) | 0.1 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | 53.0 ppb (50) | N/A | N/A | N/A | 50.0 | |
| May 14, 2021, 8 p.m. | 0.5 ppb (1) | 0.1 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | 52.0 ppb (49) | N/A | N/A | N/A | 49.0 | |
| May 14, 2021, 7 p.m. | 0.4 ppb (1) | 0.1 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | 52.0 ppb (49) | N/A | N/A | N/A | 49.0 | |
| May 14, 2021, 6 p.m. | 0.5 ppb (1) | 0.1 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | 49.0 ppb (46) | N/A | N/A | N/A | 46.0 | |
| May 14, 2021, 5 p.m. | 0.5 ppb (1) | 0.1 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | 46.0 ppb (43) | N/A | N/A | N/A | 43.0 | |
| May 14, 2021, 4 p.m. | 0.9 ppb (1) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 45.0 ppb (42) | N/A | N/A | N/A | 42.0 | |
| May 14, 2021, 3 p.m. | 1.1 ppb (2) | 0.4 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 44.0 ppb (41) | N/A | N/A | N/A | 41.0 | |
| May 14, 2021, 2 p.m. | 1.2 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 32.0 ppb (30) | N/A | N/A | N/A | 30.0 | |
| May 14, 2021, 1 p.m. | 1.5 ppb (2) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 25.0 ppb (24) | N/A | N/A | N/A | 24.0 | |
| May 14, 2021, noon | 1.7 ppb (2) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 21.0 ppb (20) | N/A | N/A | N/A | 20.0 | |
| May 14, 2021, 11 a.m. | 1.1 ppb (2) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 25.0 ppb (24) | N/A | N/A | N/A | 24.0 | |
| May 14, 2021, 10 a.m. | 0.8 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 29.0 ppb (27) | N/A | N/A | N/A | 27.0 | |
| May 14, 2021, 9 a.m. | 1.1 ppb (2) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 22.0 ppb (21) | N/A | N/A | N/A | 21.0 | |
| May 14, 2021, 8 a.m. | 1.1 ppb (2) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 22.0 ppb (21) | N/A | N/A | N/A | 21.0 | |
| May 14, 2021, 7 a.m. | 1.2 ppb (2) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 21.0 ppb (20) | N/A | N/A | N/A | 20.0 | |
| May 14, 2021, 6 a.m. | 1.0 ppb (1) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 31.0 ppb (29) | N/A | N/A | N/A | 29.0 | |
| May 14, 2021, 5 a.m. | 0.9 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 34.0 ppb (32) | N/A | N/A | N/A | 32.0 | |
| May 14, 2021, 4 a.m. | 1.0 ppb (1) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 34.0 ppb (32) | N/A | N/A | N/A | 32.0 | |
| May 14, 2021, 3 a.m. | 0.9 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 36.0 ppb (34) | N/A | N/A | N/A | 34.0 | |
| May 14, 2021, 2 a.m. | 0.8 ppb (1) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 41.0 ppb (38) | N/A | N/A | N/A | 38.0 | |
| May 14, 2021, 1 a.m. | 1.0 ppb (1) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 43.0 ppb (40) | N/A | N/A | N/A | 40.0 | |
| May 14, 2021, midnight | 0.6 ppb (1) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 47.0 ppb (44) | N/A | N/A | N/A | 44.0 | |
| May 13, 2021, 11 p.m. | 1.5 ppb (2) | 0.5 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 46.0 ppb (43) | N/A | N/A | N/A | 43.0 | |
| May 13, 2021, 10 p.m. | 0.5 ppb (1) | 0.1 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | 48.0 ppb (45) | N/A | N/A | N/A | 45.0 | |
| May 13, 2021, 9 p.m. | 0.5 ppb (1) | 0.1 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | 47.0 ppb (44) | N/A | N/A | N/A | 44.0 | |
| May 13, 2021, 8 p.m. | 0.4 ppb (1) | 0.1 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | 47.0 ppb (44) | N/A | N/A | N/A | 44.0 | |
| May 13, 2021, 7 p.m. | 0.4 ppb (1) | 0.0 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | 47.0 ppb (44) | N/A | N/A | N/A | 44.0 | |
| May 13, 2021, 6 p.m. | 0.4 ppb (1) | 0.1 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | 48.0 ppb (45) | N/A | N/A | N/A | 45.0 | |
| May 13, 2021, 5 p.m. | 0.5 ppb (1) | 0.1 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | 48.0 ppb (45) | N/A | N/A | N/A | 45.0 | |
| May 13, 2021, 4 p.m. | 1.0 ppb (1) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 43.0 ppb (40) | N/A | N/A | N/A | 40.0 | |
| May 13, 2021, 3 p.m. | 1.6 ppb (2) | 0.4 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 34.0 ppb (32) | N/A | N/A | N/A | 32.0 | |
| May 13, 2021, 2 p.m. | 1.7 ppb (2) | 0.7 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 29.0 ppb (27) | N/A | N/A | N/A | 27.0 | |
| May 13, 2021, 1 p.m. | 1.6 ppb (2) | 0.5 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 23.0 ppb (22) | N/A | N/A | N/A | 22.0 | |
| May 13, 2021, noon | 2.1 ppb (2) | 0.3 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 17.0 ppb (16) | N/A | N/A | N/A | 16.0 | |
| May 13, 2021, 11 a.m. | 1.2 ppb (2) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 23.0 ppb (22) | N/A | N/A | N/A | 22.0 | |
| May 13, 2021, 10 a.m. | 1.2 ppb (2) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 24.0 ppb (23) | N/A | N/A | N/A | 23.0 | |
| May 13, 2021, 9 a.m. | 0.9 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 30.0 ppb (28) | N/A | N/A | N/A | 28.0 | |
| May 13, 2021, 8 a.m. | 1.1 ppb (2) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 29.0 ppb (27) | N/A | N/A | N/A | 27.0 | |
| May 13, 2021, 7 a.m. | 1.4 ppb (2) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 28.0 ppb (26) | N/A | N/A | N/A | 26.0 | |
| May 13, 2021, 6 a.m. | 1.5 ppb (2) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 29.0 ppb (27) | N/A | N/A | N/A | 27.0 | |
| May 13, 2021, 5 a.m. | 1.6 ppb (2) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 33.0 ppb (31) | N/A | N/A | N/A | 31.0 | |
| May 13, 2021, 4 a.m. | 0.7 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 42.0 ppb (39) | N/A | N/A | N/A | 39.0 | |
| May 13, 2021, 3 a.m. | 0.6 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 43.0 ppb (40) | N/A | N/A | N/A | 40.0 | |
| May 13, 2021, 2 a.m. | 0.6 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 44.0 ppb (41) | N/A | N/A | N/A | 41.0 | |
| May 13, 2021, 1 a.m. | 0.5 ppb (1) | 0.0 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | 48.0 ppb (45) | N/A | N/A | N/A | 45.0 | |
| May 13, 2021, midnight | 0.5 ppb (1) | 0.1 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | 50.0 ppb (47) | N/A | N/A | N/A | 47.0 | |
| May 12, 2021, 11 p.m. | 0.5 ppb (1) | 0.1 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | 50.0 ppb (47) | N/A | N/A | N/A | 47.0 | |
| May 12, 2021, 10 p.m. | 0.6 ppb (1) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 51.0 ppb (48) | N/A | N/A | N/A | 48.0 | |
| May 12, 2021, 9 p.m. | 0.6 ppb (1) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 51.0 ppb (48) | N/A | N/A | N/A | 48.0 | |
| May 12, 2021, 8 p.m. | 0.8 ppb (1) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 49.0 ppb (46) | N/A | N/A | N/A | 46.0 | |
| May 12, 2021, 7 p.m. | 0.8 ppb (1) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 47.0 ppb (44) | N/A | N/A | N/A | 44.0 | |
| May 12, 2021, 6 p.m. | 0.9 ppb (1) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 46.0 ppb (43) | N/A | N/A | N/A | 43.0 | |
| May 12, 2021, 5 p.m. | 1.1 ppb (2) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 46.0 ppb (43) | N/A | N/A | N/A | 43.0 | |
| May 12, 2021, 4 p.m. | 1.2 ppb (2) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 45.0 ppb (42) | N/A | N/A | N/A | 42.0 | |
| May 12, 2021, 3 p.m. | 1.6 ppb (2) | 0.4 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 35.0 ppb (33) | N/A | N/A | N/A | 33.0 | |
| May 12, 2021, 2 p.m. | 2.2 ppb (3) | 0.9 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 23.0 ppb (22) | N/A | N/A | N/A | 22.0 | |
| May 12, 2021, 1 p.m. | 3.3 ppb (4) | 1.4 ppb (2) | N/A | 2.0 ppb (2) | N/A | N/A | 17.0 ppb (16) | N/A | N/A | N/A | 16.0 | |
| May 12, 2021, noon | 1.7 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 16.0 ppb (15) | N/A | N/A | N/A | 15.0 | |
| May 12, 2021, 11 a.m. | 1.0 ppb (1) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 19.0 ppb (18) | N/A | N/A | N/A | 18.0 | |
| May 12, 2021, 10 a.m. | 2.0 ppb (2) | 0.4 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 21.0 ppb (20) | N/A | N/A | N/A | 20.0 | |
| May 12, 2021, 9 a.m. | 0.9 ppb (1) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 18.0 ppb (17) | N/A | N/A | N/A | 17.0 | |
| May 12, 2021, 8 a.m. | 1.0 ppb (1) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 19.0 ppb (18) | N/A | N/A | N/A | 18.0 | |
| May 12, 2021, 7 a.m. | 1.2 ppb (2) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 19.0 ppb (18) | N/A | N/A | N/A | 18.0 | |
| May 12, 2021, 6 a.m. | 0.9 ppb (1) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 31.0 ppb (29) | N/A | N/A | N/A | 29.0 | |
| May 12, 2021, 5 a.m. | 0.9 ppb (1) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 34.0 ppb (32) | N/A | N/A | N/A | 32.0 | |
| May 12, 2021, 4 a.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 35.0 ppb (33) | N/A | N/A | N/A | 33.0 | |
| May 12, 2021, 3 a.m. | 1.2 ppb (2) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 36.0 ppb (34) | N/A | N/A | N/A | 34.0 | |
| May 12, 2021, 2 a.m. | 1.2 ppb (2) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 39.0 ppb (37) | N/A | N/A | N/A | 37.0 | |
| May 12, 2021, 1 a.m. | 0.9 ppb (1) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 45.0 ppb (42) | N/A | N/A | N/A | 42.0 | |
| May 12, 2021, midnight | 1.0 ppb (1) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 45.0 ppb (42) | N/A | N/A | N/A | 42.0 | |
| May 11, 2021, 11 p.m. | 1.0 ppb (1) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 43.0 ppb (40) | N/A | N/A | N/A | 40.0 | |
| May 11, 2021, 10 p.m. | 0.9 ppb (1) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 44.0 ppb (41) | N/A | N/A | N/A | 41.0 | |
| May 11, 2021, 9 p.m. | 0.7 ppb (1) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 45.0 ppb (42) | N/A | N/A | N/A | 42.0 | |
| May 11, 2021, 8 p.m. | 0.8 ppb (1) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 44.0 ppb (41) | N/A | N/A | N/A | 41.0 | |
| May 11, 2021, 7 p.m. | 0.9 ppb (1) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 42.0 ppb (39) | N/A | N/A | N/A | 39.0 | |
| May 11, 2021, 6 p.m. | 0.9 ppb (1) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 40.0 ppb (38) | N/A | N/A | N/A | 38.0 | |
| May 11, 2021, 5 p.m. | 1.2 ppb (2) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 43.0 ppb (40) | N/A | N/A | N/A | 40.0 | |
| May 11, 2021, 4 p.m. | 1.3 ppb (2) | 0.4 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 41.0 ppb (38) | N/A | N/A | N/A | 38.0 | |
| May 11, 2021, 3 p.m. | 1.3 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 36.0 ppb (34) | N/A | N/A | N/A | 34.0 | |
| May 11, 2021, 2 p.m. | 1.8 ppb (2) | 0.7 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 28.0 ppb (26) | N/A | N/A | N/A | 26.0 | |
| May 11, 2021, 1 p.m. | 2.7 ppb (3) | 1.0 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 19.0 ppb (18) | N/A | N/A | N/A | 18.0 | |
| May 11, 2021, noon | 3.2 ppb (4) | 1.3 ppb (2) | N/A | 2.0 ppb (2) | N/A | N/A | 18.0 ppb (17) | N/A | N/A | N/A | 17.0 | |
| May 11, 2021, 11 a.m. | 0.9 ppb (1) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 25.0 ppb (24) | N/A | N/A | N/A | 24.0 | |
| May 11, 2021, 10 a.m. | 0.8 ppb (1) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 25.0 ppb (24) | N/A | N/A | N/A | 24.0 | |
| May 11, 2021, 9 a.m. | 0.9 ppb (1) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 29.0 ppb (27) | N/A | N/A | N/A | 27.0 | |
| May 11, 2021, 8 a.m. | 0.8 ppb (1) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 34.0 ppb (32) | N/A | N/A | N/A | 32.0 | |
| May 11, 2021, 7 a.m. | 0.9 ppb (1) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 28.0 ppb (26) | N/A | N/A | N/A | 26.0 | |
| May 11, 2021, 6 a.m. | 0.7 ppb (1) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 36.0 ppb (34) | N/A | N/A | N/A | 34.0 | |
| May 11, 2021, 5 a.m. | 0.7 ppb (1) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 38.0 ppb (36) | N/A | N/A | N/A | 36.0 | |
| May 11, 2021, 4 a.m. | 0.6 ppb (1) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 37.0 ppb (35) | N/A | N/A | N/A | 35.0 | |
| May 11, 2021, 3 a.m. | 0.6 ppb (1) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 37.0 ppb (35) | N/A | N/A | N/A | 35.0 | |
| May 11, 2021, 2 a.m. | 0.7 ppb (1) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 38.0 ppb (36) | N/A | N/A | N/A | 36.0 | |
| May 11, 2021, 1 a.m. | 0.6 ppb (1) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 43.0 ppb (40) | N/A | N/A | N/A | 40.0 | |
| May 11, 2021, midnight | 0.9 ppb (1) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 43.0 ppb (40) | N/A | N/A | N/A | 40.0 | |
| May 10, 2021, 11 p.m. | 1.3 ppb (2) | 0.4 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 41.0 ppb (38) | N/A | N/A | N/A | 38.0 | |
| May 10, 2021, 10 p.m. | 1.1 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 43.0 ppb (40) | N/A | N/A | N/A | 40.0 | |
| May 10, 2021, 9 p.m. | 0.8 ppb (1) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 46.0 ppb (43) | N/A | N/A | N/A | 43.0 | |
| May 10, 2021, 8 p.m. | 0.6 ppb (1) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 47.0 ppb (44) | N/A | N/A | N/A | 44.0 | |
| May 10, 2021, 7 p.m. | 1.0 ppb (1) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 46.0 ppb (43) | N/A | N/A | N/A | 43.0 | |
| May 10, 2021, 6 p.m. | 1.0 ppb (1) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 46.0 ppb (43) | N/A | N/A | N/A | 43.0 | |
| May 10, 2021, 5 p.m. | 1.4 ppb (2) | 0.4 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 45.0 ppb (42) | N/A | N/A | N/A | 42.0 | |
| May 10, 2021, 4 p.m. | 1.0 ppb (1) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 43.0 ppb (40) | N/A | N/A | N/A | 40.0 | |
| May 10, 2021, 3 p.m. | 1.3 ppb (2) | 0.4 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 40.0 ppb (38) | N/A | N/A | N/A | 38.0 | |
| May 10, 2021, 2 p.m. | 1.7 ppb (2) | 0.7 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 39.0 ppb (37) | N/A | N/A | N/A | 37.0 | |
| May 10, 2021, 1 p.m. | 1.8 ppb (2) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 37.0 ppb (35) | N/A | N/A | N/A | 35.0 | |
| May 10, 2021, noon | 0.8 ppb (1) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 34.0 ppb (32) | N/A | N/A | N/A | 32.0 | |
| May 10, 2021, 11 a.m. | 0.7 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 38.0 ppb (36) | N/A | N/A | N/A | 36.0 | |
| May 10, 2021, 10 a.m. | 0.5 ppb (1) | 0.0 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | 42.0 ppb (39) | N/A | N/A | N/A | 39.0 | |
| May 10, 2021, 9 a.m. | 0.4 ppb (1) | 0.0 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | 44.0 ppb (41) | N/A | N/A | N/A | 41.0 | |
| May 10, 2021, 8 a.m. | 0.5 ppb (1) | 0.0 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | 45.0 ppb (42) | N/A | N/A | N/A | 42.0 | |
| May 10, 2021, 7 a.m. | 0.5 ppb (1) | 0.0 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | 46.0 ppb (43) | N/A | N/A | N/A | 43.0 | |
| May 10, 2021, 6 a.m. | 0.6 ppb (1) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 44.0 ppb (41) | N/A | N/A | N/A | 41.0 | |
| May 10, 2021, 5 a.m. | 0.7 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 34.0 ppb (32) | N/A | N/A | N/A | 32.0 | |
| May 10, 2021, 4 a.m. | 0.8 ppb (1) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 36.0 ppb (34) | N/A | N/A | N/A | 34.0 | |
| May 10, 2021, 3 a.m. | 0.9 ppb (1) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 40.0 ppb (38) | N/A | N/A | N/A | 38.0 | |
| May 10, 2021, 2 a.m. | 0.9 ppb (1) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 42.0 ppb (39) | N/A | N/A | N/A | 39.0 | |
| May 10, 2021, 1 a.m. | 0.7 ppb (1) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 50.0 ppb (47) | N/A | N/A | N/A | 47.0 | |
| May 10, 2021, midnight | 0.7 ppb (1) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 49.0 ppb (46) | N/A | N/A | N/A | 46.0 | |
| May 9, 2021, 11 p.m. | 0.5 ppb (1) | 0.0 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | 50.0 ppb (47) | N/A | N/A | N/A | 47.0 | |
| May 9, 2021, 10 p.m. | 0.5 ppb (1) | 0.1 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | 51.0 ppb (48) | N/A | N/A | N/A | 48.0 | |
| May 9, 2021, 9 p.m. | 0.7 ppb (1) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 50.0 ppb (47) | N/A | N/A | N/A | 47.0 | |
| May 9, 2021, 8 p.m. | 0.7 ppb (1) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 50.0 ppb (47) | N/A | N/A | N/A | 47.0 | |
| May 9, 2021, 7 p.m. | 1.0 ppb (1) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 50.0 ppb (47) | N/A | N/A | N/A | 47.0 | |
| May 9, 2021, 6 p.m. | 1.0 ppb (1) | 0.2 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 50.0 ppb (47) | N/A | N/A | N/A | 47.0 | |
| May 9, 2021, 5 p.m. | 0.9 ppb (1) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 50.0 ppb (47) | N/A | N/A | N/A | 47.0 | |
| May 9, 2021, 4 p.m. | 0.9 ppb (1) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 48.0 ppb (45) | N/A | N/A | N/A | 45.0 | |
| May 9, 2021, 3 p.m. | 1.0 ppb (1) | 0.3 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 45.0 ppb (42) | N/A | N/A | N/A | 42.0 | |
| May 9, 2021, 2 p.m. | 1.3 ppb (2) | 0.5 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 35.0 ppb (33) | N/A | N/A | N/A | 33.0 | |
| May 9, 2021, 1 p.m. | 1.4 ppb (2) | 0.4 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 28.0 ppb (26) | N/A | N/A | N/A | 26.0 | |
| May 9, 2021, noon | 1.7 ppb (2) | 0.2 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 19.0 ppb (18) | N/A | N/A | N/A | 18.0 | |
| May 9, 2021, 11 a.m. | 0.9 ppb (1) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 27.0 ppb (25) | N/A | N/A | N/A | 25.0 | |
| May 9, 2021, 10 a.m. | 0.8 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 32.0 ppb (30) | N/A | N/A | N/A | 30.0 | |
| May 9, 2021, 9 a.m. | 1.4 ppb (2) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 27.0 ppb (25) | N/A | N/A | N/A | 25.0 | |
| May 9, 2021, 8 a.m. | 0.8 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 32.0 ppb (30) | N/A | N/A | N/A | 30.0 | |
| May 9, 2021, 7 a.m. | 0.8 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 36.0 ppb (34) | N/A | N/A | N/A | 34.0 | |
| May 9, 2021, 6 a.m. | 0.7 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 40.0 ppb (38) | N/A | N/A | N/A | 38.0 | |
| May 9, 2021, 5 a.m. | 0.7 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 42.0 ppb (39) | N/A | N/A | N/A | 39.0 | |
| May 9, 2021, 4 a.m. | 0.8 ppb (1) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 43.0 ppb (40) | N/A | N/A | N/A | 40.0 | |
| May 9, 2021, 3 a.m. | 0.8 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 44.0 ppb (41) | N/A | N/A | N/A | 41.0 | |
| May 9, 2021, 2 a.m. | 1.0 ppb (1) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 46.0 ppb (43) | N/A | N/A | N/A | 43.0 | |
| May 9, 2021, 1 a.m. | 0.7 ppb (1) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 52.0 ppb (49) | N/A | N/A | N/A | 49.0 | |
| May 9, 2021, midnight | 0.6 ppb (1) | 0.1 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 54.0 ppb (50) | N/A | N/A | N/A | 50.0 | |
| May 8, 2021, 11 p.m. | 0.5 ppb (1) | 0.1 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | 54.0 ppb (50) | N/A | N/A | N/A | 50.0 | |
| May 8, 2021, 10 p.m. | 0.5 ppb (1) | 0.1 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | 54.0 ppb (50) | N/A | N/A | N/A | 50.0 |