Underhill (Harvey Rd) VT, US: 44.528389, -72.868973
| Date Observed (UTC) | NOX | NO | NOY | NO2 | NO2Y | SO2 | OZONE | CO | PM10 | PM2.5 | AQI | AQI/500 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sept. 23, 2020, 3 p.m. | N/A | 0.1 ppb (0) | 1.7 ppb (2) | N/A | 1.6 ppb (1) | 1.0 ppb (1) | 35.0 ppb (27) | 0.07 ppb (1) | N/A | 5.2 μg/m3 (22) | 27.0 | |
| Sept. 23, 2020, 2 p.m. | N/A | 0.1 ppb (0) | 1.6 ppb (1) | N/A | 1.5 ppb (1) | 1.0 ppb (1) | 36.0 ppb (28) | 0.08 ppb (1) | N/A | 5.0 μg/m3 (21) | 28.0 | |
| Sept. 23, 2020, 1 p.m. | N/A | 0.0 ppb (0) | 1.5 ppb (1) | N/A | 1.4 ppb (1) | 1.0 ppb (1) | 34.0 ppb (26) | 0.13 ppb (1) | N/A | 4.8 μg/m3 (20) | 26.0 | |
| Sept. 23, 2020, noon | N/A | 0.0 ppb (0) | 1.3 ppb (1) | N/A | 1.2 ppb (1) | 1.0 ppb (1) | 28.0 ppb (22) | 0.09 ppb (1) | N/A | 4.5 μg/m3 (19) | 22.0 | |
| Sept. 23, 2020, 11 a.m. | N/A | 0.0 ppb (0) | 1.1 ppb (1) | N/A | 1.1 ppb (1) | 0.0 ppb (0) | 28.0 ppb (22) | 0.06 ppb (1) | N/A | 4.4 μg/m3 (18) | 22.0 | |
| Sept. 23, 2020, 10 a.m. | N/A | 0.0 ppb (0) | 1.0 ppb (1) | N/A | 1.1 ppb (1) | 0.0 ppb (0) | 31.0 ppb (24) | 0.06 ppb (1) | N/A | 4.5 μg/m3 (19) | 24.0 | |
| Sept. 23, 2020, 9 a.m. | N/A | 0.0 ppb (0) | 1.0 ppb (1) | N/A | 1.0 ppb (1) | 0.0 ppb (0) | 32.0 ppb (25) | 0.07 ppb (1) | N/A | 4.4 μg/m3 (18) | 25.0 | |
| Sept. 23, 2020, 8 a.m. | N/A | 0.0 ppb (0) | 0.8 ppb (1) | N/A | 0.9 ppb (1) | 0.0 ppb (0) | 30.0 ppb (23) | N/A | N/A | 4.4 μg/m3 (18) | 23.0 | |
| Sept. 23, 2020, 7 a.m. | N/A | 0.0 ppb (0) | 0.9 ppb (1) | N/A | 0.9 ppb (1) | N/A | 31.0 ppb (24) | 0.06 ppb (1) | N/A | 4.3 μg/m3 (18) | 24.0 | |
| Sept. 23, 2020, 6 a.m. | N/A | 0.0 ppb (0) | 0.9 ppb (1) | N/A | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 0.06 ppb (1) | N/A | 4.8 μg/m3 (20) | 20.0 | |
| Sept. 23, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 33.0 ppb (25) | 0.07 ppb (1) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| Sept. 23, 2020, 4 a.m. | N/A | 0.0 ppb (0) | 1.4 ppb (1) | N/A | 1.5 ppb (1) | 1.0 ppb (1) | 34.0 ppb (26) | 0.07 ppb (1) | N/A | 6.7 μg/m3 (28) | 28.0 | |
| Sept. 23, 2020, 3 a.m. | N/A | 0.0 ppb (0) | 1.5 ppb (1) | N/A | 1.5 ppb (1) | 1.0 ppb (1) | 33.0 ppb (25) | 0.06 ppb (1) | N/A | 5.7 μg/m3 (24) | 25.0 | |
| Sept. 23, 2020, 2 a.m. | N/A | 0.0 ppb (0) | 1.7 ppb (2) | N/A | 1.8 ppb (2) | 1.0 ppb (1) | 34.0 ppb (26) | 0.06 ppb (1) | N/A | 4.9 μg/m3 (20) | 26.0 | |
| Sept. 23, 2020, 1 a.m. | N/A | 0.0 ppb (0) | 2.8 ppb (3) | N/A | 2.8 ppb (3) | 1.0 ppb (1) | 32.0 ppb (25) | 0.07 ppb (1) | N/A | 5.4 μg/m3 (23) | 25.0 | |
| Sept. 23, 2020, midnight | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 27.0 ppb (21) | 0.1 ppb (1) | N/A | 9.5 μg/m3 (40) | 40.0 | |
| Sept. 22, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 26.0 ppb (20) | 0.1 ppb (1) | N/A | 6.6 μg/m3 (28) | 28.0 | |
| Sept. 22, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | 29.0 ppb (22) | 0.07 ppb (1) | N/A | 5.7 μg/m3 (24) | 24.0 | |
| Sept. 22, 2020, 9 p.m. | N/A | 0.1 ppb (0) | 2.9 ppb (3) | N/A | 2.8 ppb (3) | 1.0 ppb (1) | 35.0 ppb (27) | 0.07 ppb (1) | N/A | 5.7 μg/m3 (24) | 27.0 | |
| Sept. 22, 2020, 8 p.m. | N/A | 0.1 ppb (0) | 2.3 ppb (2) | N/A | 2.3 ppb (2) | 1.0 ppb (1) | 38.0 ppb (29) | 0.05 ppb (1) | N/A | 5.4 μg/m3 (23) | 29.0 | |
| Sept. 22, 2020, 7 p.m. | N/A | 0.2 ppb (0) | 3.1 ppb (3) | N/A | 2.9 ppb (3) | 1.0 ppb (1) | 37.0 ppb (28) | 0.05 ppb (1) | N/A | 5.9 μg/m3 (25) | 28.0 | |
| Sept. 22, 2020, 6 p.m. | N/A | 0.2 ppb (0) | 2.8 ppb (3) | N/A | 2.6 ppb (2) | 1.0 ppb (1) | 37.0 ppb (28) | 0.06 ppb (1) | N/A | 5.5 μg/m3 (23) | 28.0 | |
| Sept. 22, 2020, 5 p.m. | N/A | 0.1 ppb (0) | 1.7 ppb (2) | N/A | 1.6 ppb (1) | 1.0 ppb (1) | N/A | 0.05 ppb (1) | N/A | 3.9 μg/m3 (16) | 16.0 | |
| Sept. 22, 2020, 4 p.m. | N/A | 0.1 ppb (0) | 1.6 ppb (1) | N/A | 1.4 ppb (1) | 1.0 ppb (1) | 34.0 ppb (26) | 0.05 ppb (1) | N/A | 4.0 μg/m3 (17) | 26.0 | |
| Sept. 22, 2020, 3 p.m. | N/A | 0.1 ppb (0) | 1.2 ppb (1) | N/A | 1.1 ppb (1) | 0.0 ppb (0) | 31.0 ppb (24) | 0.04 ppb (0) | N/A | 4.0 μg/m3 (17) | 24.0 | |
| Sept. 22, 2020, 2 p.m. | N/A | 0.1 ppb (0) | 1.1 ppb (1) | N/A | 1.0 ppb (1) | 0.0 ppb (0) | 28.0 ppb (22) | 0.05 ppb (1) | N/A | 3.9 μg/m3 (16) | 22.0 | |
| Sept. 22, 2020, 1 p.m. | N/A | 0.1 ppb (0) | 0.9 ppb (1) | N/A | 0.8 ppb (1) | 0.0 ppb (0) | 25.0 ppb (19) | 0.05 ppb (1) | N/A | 3.8 μg/m3 (16) | 19.0 | |
| Sept. 22, 2020, noon | N/A | 0.0 ppb (0) | 0.6 ppb (1) | N/A | 0.6 ppb (1) | 0.0 ppb (0) | 23.0 ppb (18) | 0.05 ppb (1) | N/A | 3.5 μg/m3 (15) | 18.0 | |
| Sept. 22, 2020, 11 a.m. | N/A | 0.0 ppb (0) | 0.5 ppb (0) | N/A | 0.5 ppb (0) | 0.0 ppb (0) | 24.0 ppb (18) | 0.07 ppb (1) | N/A | 4.0 μg/m3 (17) | 18.0 | |
| Sept. 22, 2020, 10 a.m. | N/A | 0.0 ppb (0) | 0.4 ppb (0) | N/A | 0.5 ppb (0) | 0.0 ppb (0) | 24.0 ppb (18) | 0.06 ppb (1) | N/A | 3.5 μg/m3 (15) | 18.0 | |
| Sept. 22, 2020, 9 a.m. | N/A | 0.0 ppb (0) | 0.4 ppb (0) | N/A | 0.5 ppb (0) | 0.0 ppb (0) | 24.0 ppb (18) | 0.06 ppb (1) | N/A | 3.2 μg/m3 (13) | 18.0 | |
| Sept. 22, 2020, 8 a.m. | N/A | 0.0 ppb (0) | 0.5 ppb (0) | N/A | 0.5 ppb (0) | 0.0 ppb (0) | 24.0 ppb (18) | N/A | N/A | 3.4 μg/m3 (14) | 18.0 | |
| Sept. 22, 2020, 7 a.m. | N/A | 0.0 ppb (0) | 0.5 ppb (0) | N/A | 0.5 ppb (0) | N/A | 22.0 ppb (17) | 0.06 ppb (1) | N/A | 3.5 μg/m3 (15) | 17.0 | |
| Sept. 22, 2020, 6 a.m. | N/A | 0.0 ppb (0) | 0.5 ppb (0) | N/A | 0.5 ppb (0) | 0.0 ppb (0) | N/A | 0.07 ppb (1) | N/A | 3.5 μg/m3 (15) | 15.0 | |
| Sept. 22, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 24.0 ppb (18) | 0.06 ppb (1) | N/A | 3.3 μg/m3 (14) | 18.0 | |
| Sept. 22, 2020, 4 a.m. | N/A | 0.0 ppb (0) | 0.4 ppb (0) | N/A | 0.5 ppb (0) | 0.0 ppb (0) | 24.0 ppb (18) | 0.06 ppb (1) | N/A | 3.3 μg/m3 (14) | 18.0 | |
| Sept. 22, 2020, 3 a.m. | N/A | 0.0 ppb (0) | 0.5 ppb (0) | N/A | 0.6 ppb (1) | 0.0 ppb (0) | 23.0 ppb (18) | 0.05 ppb (1) | N/A | 3.7 μg/m3 (15) | 18.0 | |
| Sept. 22, 2020, 2 a.m. | N/A | 0.0 ppb (0) | 0.5 ppb (0) | N/A | 0.5 ppb (0) | 0.0 ppb (0) | 22.0 ppb (17) | 0.1 ppb (1) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| Sept. 22, 2020, 1 a.m. | N/A | 0.0 ppb (0) | 0.5 ppb (0) | N/A | 0.5 ppb (0) | 0.0 ppb (0) | 23.0 ppb (18) | 0.09 ppb (1) | N/A | 6.9 μg/m3 (29) | 29.0 | |
| Sept. 22, 2020, midnight | N/A | 0.0 ppb (0) | 0.8 ppb (1) | N/A | 0.8 ppb (1) | 0.0 ppb (0) | 23.0 ppb (18) | 0.11 ppb (1) | N/A | 5.6 μg/m3 (23) | 23.0 | |
| Sept. 21, 2020, 11 p.m. | N/A | 0.0 ppb (0) | 0.6 ppb (1) | N/A | 0.7 ppb (1) | 0.0 ppb (0) | 24.0 ppb (18) | 0.05 ppb (1) | N/A | 3.8 μg/m3 (16) | 18.0 | |
| Sept. 21, 2020, 10 p.m. | N/A | 0.0 ppb (0) | 0.9 ppb (1) | N/A | 0.9 ppb (1) | 0.0 ppb (0) | 23.0 ppb (18) | 0.05 ppb (1) | N/A | 3.8 μg/m3 (16) | 18.0 | |
| Sept. 21, 2020, 9 p.m. | N/A | 0.0 ppb (0) | 0.9 ppb (1) | N/A | 0.9 ppb (1) | 0.0 ppb (0) | 28.0 ppb (22) | 0.06 ppb (1) | N/A | 3.8 μg/m3 (16) | 22.0 | |
| Sept. 21, 2020, 8 p.m. | N/A | 0.0 ppb (0) | 0.7 ppb (1) | N/A | 0.7 ppb (1) | 0.0 ppb (0) | 32.0 ppb (25) | 0.05 ppb (1) | N/A | 3.4 μg/m3 (14) | 25.0 | |
| Sept. 21, 2020, 7 p.m. | N/A | 0.0 ppb (0) | 0.8 ppb (1) | N/A | 0.8 ppb (1) | 0.0 ppb (0) | 32.0 ppb (25) | 0.05 ppb (1) | N/A | 3.3 μg/m3 (14) | 25.0 | |
| Sept. 21, 2020, 6 p.m. | N/A | 0.0 ppb (0) | 0.7 ppb (1) | N/A | 0.7 ppb (1) | 0.0 ppb (0) | 31.0 ppb (24) | 0.05 ppb (1) | N/A | 3.4 μg/m3 (14) | 24.0 | |
| Sept. 21, 2020, 5 p.m. | N/A | 0.0 ppb (0) | 0.7 ppb (1) | N/A | 0.7 ppb (1) | 0.0 ppb (0) | 30.0 ppb (23) | 0.05 ppb (1) | N/A | 3.4 μg/m3 (14) | 23.0 | |
| Sept. 21, 2020, 4 p.m. | N/A | 0.0 ppb (0) | 0.7 ppb (1) | N/A | 0.6 ppb (1) | 0.0 ppb (0) | 29.0 ppb (22) | 0.05 ppb (1) | N/A | 3.3 μg/m3 (14) | 22.0 | |
| Sept. 21, 2020, 3 p.m. | N/A | 0.1 ppb (0) | 0.7 ppb (1) | N/A | 0.6 ppb (1) | 0.0 ppb (0) | 28.0 ppb (22) | 0.05 ppb (1) | N/A | 3.4 μg/m3 (14) | 22.0 | |
| Sept. 21, 2020, 2 p.m. | N/A | 0.0 ppb (0) | 0.6 ppb (1) | N/A | 0.5 ppb (0) | 0.0 ppb (0) | 27.0 ppb (21) | 0.05 ppb (1) | N/A | 3.1 μg/m3 (13) | 21.0 | |
| Sept. 21, 2020, 1 p.m. | N/A | 0.0 ppb (0) | 0.6 ppb (1) | N/A | 0.6 ppb (1) | 0.0 ppb (0) | 22.0 ppb (17) | 0.05 ppb (1) | N/A | 3.1 μg/m3 (13) | 17.0 | |
| Sept. 21, 2020, noon | N/A | 0.0 ppb (0) | 0.5 ppb (0) | N/A | 0.4 ppb (0) | 0.0 ppb (0) | 20.0 ppb (15) | 0.04 ppb (0) | N/A | 3.1 μg/m3 (13) | 15.0 | |
| Sept. 21, 2020, 11 a.m. | N/A | 0.0 ppb (0) | 0.4 ppb (0) | N/A | 0.4 ppb (0) | 0.0 ppb (0) | 20.0 ppb (15) | 0.04 ppb (0) | N/A | 3.2 μg/m3 (13) | 15.0 | |
| Sept. 21, 2020, 10 a.m. | N/A | 0.0 ppb (0) | 0.3 ppb (0) | N/A | 0.4 ppb (0) | 0.0 ppb (0) | 20.0 ppb (15) | 0.05 ppb (1) | N/A | 3.1 μg/m3 (13) | 15.0 | |
| Sept. 21, 2020, 9 a.m. | N/A | 0.0 ppb (0) | 0.5 ppb (0) | N/A | 0.5 ppb (0) | 0.0 ppb (0) | 20.0 ppb (15) | 0.05 ppb (1) | N/A | 3.0 μg/m3 (12) | 15.0 | |
| Sept. 21, 2020, 8 a.m. | N/A | 0.0 ppb (0) | 0.3 ppb (0) | N/A | 0.3 ppb (0) | 0.0 ppb (0) | 21.0 ppb (16) | N/A | N/A | 3.0 μg/m3 (12) | 16.0 | |
| Sept. 21, 2020, 7 a.m. | N/A | 0.0 ppb (0) | 0.3 ppb (0) | N/A | 0.3 ppb (0) | N/A | 21.0 ppb (16) | 0.05 ppb (1) | N/A | 3.0 μg/m3 (12) | 16.0 | |
| Sept. 21, 2020, 6 a.m. | N/A | 0.0 ppb (0) | 0.3 ppb (0) | N/A | 0.4 ppb (0) | 0.0 ppb (0) | N/A | 0.05 ppb (1) | N/A | 3.1 μg/m3 (13) | 13.0 | |
| Sept. 21, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 22.0 ppb (17) | 0.05 ppb (1) | N/A | 3.1 μg/m3 (13) | 17.0 | |
| Sept. 21, 2020, 4 a.m. | N/A | 0.0 ppb (0) | 0.3 ppb (0) | N/A | 0.4 ppb (0) | 0.0 ppb (0) | 20.0 ppb (15) | 0.06 ppb (1) | N/A | 3.2 μg/m3 (13) | 15.0 | |
| Sept. 21, 2020, 3 a.m. | N/A | 0.0 ppb (0) | 0.4 ppb (0) | N/A | 0.5 ppb (0) | 0.0 ppb (0) | 24.0 ppb (18) | 0.06 ppb (1) | N/A | 3.5 μg/m3 (15) | 18.0 | |
| Sept. 21, 2020, 2 a.m. | N/A | -0.1 ppb (0) | 0.4 ppb (0) | N/A | 0.5 ppb (0) | 0.0 ppb (0) | 23.0 ppb (18) | 0.06 ppb (1) | N/A | 3.5 μg/m3 (15) | 18.0 | |
| Sept. 21, 2020, 1 a.m. | N/A | 0.0 ppb (0) | 0.5 ppb (0) | N/A | 0.5 ppb (0) | 0.0 ppb (0) | 22.0 ppb (17) | 0.05 ppb (1) | N/A | 3.6 μg/m3 (15) | 17.0 | |
| Sept. 21, 2020, midnight | N/A | 0.0 ppb (0) | 0.6 ppb (1) | N/A | 0.6 ppb (1) | 0.0 ppb (0) | 22.0 ppb (17) | 0.06 ppb (1) | N/A | 3.6 μg/m3 (15) | 17.0 | |
| Sept. 20, 2020, 11 p.m. | N/A | 0.0 ppb (0) | 0.6 ppb (1) | N/A | 0.7 ppb (1) | 0.0 ppb (0) | 22.0 ppb (17) | 0.06 ppb (1) | N/A | 3.6 μg/m3 (15) | 17.0 | |
| Sept. 20, 2020, 10 p.m. | N/A | 0.1 ppb (0) | 1.2 ppb (1) | N/A | 1.1 ppb (1) | 0.0 ppb (0) | 25.0 ppb (19) | 0.06 ppb (1) | N/A | 3.5 μg/m3 (15) | 19.0 | |
| Sept. 20, 2020, 9 p.m. | N/A | 0.0 ppb (0) | 0.7 ppb (1) | N/A | 0.7 ppb (1) | 0.0 ppb (0) | 31.0 ppb (24) | 0.07 ppb (1) | N/A | 3.4 μg/m3 (14) | 24.0 | |
| Sept. 20, 2020, 8 p.m. | N/A | 0.0 ppb (0) | 0.8 ppb (1) | N/A | 0.8 ppb (1) | 0.0 ppb (0) | 32.0 ppb (25) | 0.07 ppb (1) | N/A | 3.7 μg/m3 (15) | 25.0 | |
| Sept. 20, 2020, 7 p.m. | N/A | 0.0 ppb (0) | 0.7 ppb (1) | N/A | 0.6 ppb (1) | 0.0 ppb (0) | 31.0 ppb (24) | 0.07 ppb (1) | N/A | 3.2 μg/m3 (13) | 24.0 | |
| Sept. 20, 2020, 6 p.m. | N/A | 0.0 ppb (0) | 0.6 ppb (1) | N/A | 0.5 ppb (0) | 0.0 ppb (0) | 31.0 ppb (24) | 0.06 ppb (1) | N/A | 3.1 μg/m3 (13) | 24.0 | |
| Sept. 20, 2020, 5 p.m. | N/A | 0.0 ppb (0) | 0.6 ppb (1) | N/A | 0.5 ppb (0) | 0.0 ppb (0) | 30.0 ppb (23) | 0.06 ppb (1) | N/A | 3.2 μg/m3 (13) | 23.0 | |
| Sept. 20, 2020, 4 p.m. | N/A | 0.1 ppb (0) | 0.7 ppb (1) | N/A | 0.7 ppb (1) | 0.0 ppb (0) | 28.0 ppb (22) | 0.06 ppb (1) | N/A | 3.6 μg/m3 (15) | 22.0 | |
| Sept. 20, 2020, 3 p.m. | N/A | 0.1 ppb (0) | 0.7 ppb (1) | N/A | 0.6 ppb (1) | 0.0 ppb (0) | 27.0 ppb (21) | 0.06 ppb (1) | N/A | 3.4 μg/m3 (14) | 21.0 | |
| Sept. 20, 2020, 2 p.m. | N/A | 0.2 ppb (0) | 1.0 ppb (1) | N/A | 0.8 ppb (1) | 1.0 ppb (1) | 24.0 ppb (18) | 0.05 ppb (1) | N/A | 3.6 μg/m3 (15) | 18.0 | |
| Sept. 20, 2020, 1 p.m. | N/A | 0.3 ppb (0) | 1.3 ppb (1) | N/A | 1.1 ppb (1) | 1.0 ppb (1) | 22.0 ppb (17) | 0.05 ppb (1) | N/A | 4.1 μg/m3 (17) | 17.0 | |
| Sept. 20, 2020, noon | N/A | 0.1 ppb (0) | 0.8 ppb (1) | N/A | 0.7 ppb (1) | 0.0 ppb (0) | 20.0 ppb (15) | 0.04 ppb (0) | N/A | 3.2 μg/m3 (13) | 15.0 | |
| Sept. 20, 2020, 11 a.m. | N/A | 0.0 ppb (0) | 0.4 ppb (0) | N/A | 0.4 ppb (0) | 0.0 ppb (0) | 20.0 ppb (15) | 0.05 ppb (1) | N/A | 2.6 μg/m3 (11) | 15.0 | |
| Sept. 20, 2020, 10 a.m. | N/A | 0.0 ppb (0) | 0.3 ppb (0) | N/A | 0.4 ppb (0) | 0.0 ppb (0) | 19.0 ppb (15) | 0.04 ppb (0) | N/A | 2.5 μg/m3 (10) | 15.0 | |
| Sept. 20, 2020, 9 a.m. | N/A | 0.0 ppb (0) | 0.3 ppb (0) | N/A | 0.3 ppb (0) | 0.0 ppb (0) | 20.0 ppb (15) | 0.04 ppb (0) | N/A | 2.3 μg/m3 (10) | 15.0 | |
| Sept. 20, 2020, 8 a.m. | N/A | 0.0 ppb (0) | 0.3 ppb (0) | N/A | 0.4 ppb (0) | 0.0 ppb (0) | 20.0 ppb (15) | N/A | N/A | 2.3 μg/m3 (10) | 15.0 | |
| Sept. 20, 2020, 7 a.m. | N/A | 0.0 ppb (0) | 0.3 ppb (0) | N/A | 0.4 ppb (0) | N/A | 20.0 ppb (15) | 0.03 ppb (0) | N/A | 2.3 μg/m3 (10) | 15.0 | |
| Sept. 20, 2020, 6 a.m. | N/A | 0.0 ppb (0) | 0.3 ppb (0) | N/A | 0.4 ppb (0) | 0.0 ppb (0) | N/A | 0.04 ppb (0) | N/A | 2.1 μg/m3 (9) | 9.0 | |
| Sept. 20, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 21.0 ppb (16) | 0.03 ppb (0) | N/A | 2.1 μg/m3 (9) | 16.0 | |
| Sept. 20, 2020, 4 a.m. | N/A | 0.0 ppb (0) | 0.3 ppb (0) | N/A | 0.3 ppb (0) | 0.0 ppb (0) | 23.0 ppb (18) | 0.04 ppb (0) | N/A | 2.0 μg/m3 (8) | 18.0 | |
| Sept. 20, 2020, 3 a.m. | N/A | 0.0 ppb (0) | 0.4 ppb (0) | N/A | 0.4 ppb (0) | 0.0 ppb (0) | 22.0 ppb (17) | 0.04 ppb (0) | N/A | 2.0 μg/m3 (8) | 17.0 | |
| Sept. 20, 2020, 2 a.m. | N/A | 0.0 ppb (0) | 0.6 ppb (1) | N/A | 0.7 ppb (1) | 0.0 ppb (0) | 25.0 ppb (19) | 0.04 ppb (0) | N/A | 2.0 μg/m3 (8) | 19.0 | |
| Sept. 20, 2020, 1 a.m. | N/A | 0.0 ppb (0) | 0.8 ppb (1) | N/A | 0.9 ppb (1) | 0.0 ppb (0) | 26.0 ppb (20) | 0.03 ppb (0) | N/A | 2.1 μg/m3 (9) | 20.0 | |
| Sept. 20, 2020, midnight | N/A | 0.0 ppb (0) | 0.8 ppb (1) | N/A | 0.8 ppb (1) | 0.0 ppb (0) | 25.0 ppb (19) | 0.03 ppb (0) | N/A | 2.1 μg/m3 (9) | 19.0 | |
| Sept. 19, 2020, 11 p.m. | N/A | 0.0 ppb (0) | 0.6 ppb (1) | N/A | 0.7 ppb (1) | 0.0 ppb (0) | 25.0 ppb (19) | 0.03 ppb (0) | N/A | 2.1 μg/m3 (9) | 19.0 | |
| Sept. 19, 2020, 10 p.m. | N/A | 0.0 ppb (0) | 0.7 ppb (1) | N/A | 0.7 ppb (1) | 0.0 ppb (0) | 25.0 ppb (19) | 0.04 ppb (0) | N/A | 2.6 μg/m3 (11) | 19.0 | |
| Sept. 19, 2020, 9 p.m. | N/A | 0.0 ppb (0) | 0.7 ppb (1) | N/A | 0.6 ppb (1) | 0.0 ppb (0) | 30.0 ppb (23) | 0.04 ppb (0) | N/A | 2.0 μg/m3 (8) | 23.0 | |
| Sept. 19, 2020, 8 p.m. | N/A | 0.0 ppb (0) | 0.6 ppb (1) | N/A | 0.6 ppb (1) | 0.0 ppb (0) | 30.0 ppb (23) | 0.04 ppb (0) | N/A | 1.9 μg/m3 (8) | 23.0 | |
| Sept. 19, 2020, 7 p.m. | N/A | 0.0 ppb (0) | 0.5 ppb (0) | N/A | 0.4 ppb (0) | 0.0 ppb (0) | 30.0 ppb (23) | 0.03 ppb (0) | N/A | 1.6 μg/m3 (7) | 23.0 | |
| Sept. 19, 2020, 6 p.m. | N/A | 0.0 ppb (0) | 0.3 ppb (0) | N/A | 0.3 ppb (0) | 0.0 ppb (0) | 30.0 ppb (23) | 0.04 ppb (0) | N/A | 1.4 μg/m3 (6) | 23.0 | |
| Sept. 19, 2020, 5 p.m. | N/A | 0.1 ppb (0) | 0.5 ppb (0) | N/A | 0.5 ppb (0) | 0.0 ppb (0) | 27.0 ppb (21) | 0.04 ppb (0) | N/A | 1.6 μg/m3 (7) | 21.0 | |
| Sept. 19, 2020, 4 p.m. | N/A | 0.1 ppb (0) | 0.6 ppb (1) | N/A | 0.5 ppb (0) | 0.0 ppb (0) | 25.0 ppb (19) | 0.04 ppb (0) | N/A | 1.7 μg/m3 (7) | 19.0 | |
| Sept. 19, 2020, 3 p.m. | N/A | 0.3 ppb (0) | 1.1 ppb (1) | N/A | 0.8 ppb (1) | 0.0 ppb (0) | 22.0 ppb (17) | 0.04 ppb (0) | N/A | 2.2 μg/m3 (9) | 17.0 | |
| Sept. 19, 2020, 2 p.m. | N/A | 0.2 ppb (0) | 0.8 ppb (1) | N/A | 0.6 ppb (1) | 0.0 ppb (0) | 22.0 ppb (17) | 0.04 ppb (0) | N/A | 1.9 μg/m3 (8) | 17.0 | |
| Sept. 19, 2020, 1 p.m. | N/A | 0.3 ppb (0) | 1.1 ppb (1) | N/A | 0.9 ppb (1) | 1.0 ppb (1) | 19.0 ppb (15) | 0.04 ppb (0) | N/A | 2.4 μg/m3 (10) | 15.0 | |
| Sept. 19, 2020, noon | N/A | 0.4 ppb (0) | 1.5 ppb (1) | N/A | 1.1 ppb (1) | 0.0 ppb (0) | 15.0 ppb (12) | 0.05 ppb (1) | N/A | 3.1 μg/m3 (13) | 13.0 | |
| Sept. 19, 2020, 11 a.m. | N/A | 0.1 ppb (0) | 1.6 ppb (1) | N/A | 1.4 ppb (1) | 0.0 ppb (0) | 13.0 ppb (10) | 0.05 ppb (1) | N/A | 3.2 μg/m3 (13) | 13.0 | |
| Sept. 19, 2020, 10 a.m. | N/A | 0.0 ppb (0) | 1.4 ppb (1) | N/A | 1.4 ppb (1) | 0.0 ppb (0) | 13.0 ppb (10) | 0.05 ppb (1) | N/A | 3.1 μg/m3 (13) | 13.0 | |
| Sept. 19, 2020, 9 a.m. | N/A | 0.0 ppb (0) | 2.0 ppb (2) | N/A | 2.1 ppb (2) | 0.0 ppb (0) | 15.0 ppb (12) | 0.06 ppb (1) | N/A | 3.3 μg/m3 (14) | 14.0 | |
| Sept. 19, 2020, 8 a.m. | N/A | 0.0 ppb (0) | 2.5 ppb (2) | N/A | 2.5 ppb (2) | 0.0 ppb (0) | 14.0 ppb (11) | N/A | N/A | 3.2 μg/m3 (13) | 13.0 | |
| Sept. 19, 2020, 7 a.m. | N/A | 0.0 ppb (0) | 1.9 ppb (2) | N/A | 2.0 ppb (2) | N/A | 14.0 ppb (11) | 0.06 ppb (1) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| Sept. 19, 2020, 6 a.m. | N/A | 0.0 ppb (0) | 0.9 ppb (1) | N/A | 0.9 ppb (1) | 0.0 ppb (0) | N/A | 0.04 ppb (0) | N/A | 2.2 μg/m3 (9) | 9.0 | |
| Sept. 19, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 18.0 ppb (14) | 0.04 ppb (0) | N/A | 1.8 μg/m3 (8) | 14.0 | |
| Sept. 19, 2020, 4 a.m. | N/A | 0.0 ppb (0) | 0.4 ppb (0) | N/A | 0.4 ppb (0) | 0.0 ppb (0) | 18.0 ppb (14) | 0.05 ppb (1) | N/A | 1.6 μg/m3 (7) | 14.0 | |
| Sept. 19, 2020, 3 a.m. | N/A | 0.0 ppb (0) | 0.4 ppb (0) | N/A | 0.4 ppb (0) | 0.0 ppb (0) | 19.0 ppb (15) | 0.05 ppb (1) | N/A | 1.8 μg/m3 (8) | 15.0 | |
| Sept. 19, 2020, 2 a.m. | N/A | 0.0 ppb (0) | 0.4 ppb (0) | N/A | 0.4 ppb (0) | 0.0 ppb (0) | 19.0 ppb (15) | 0.03 ppb (0) | N/A | 1.6 μg/m3 (7) | 15.0 | |
| Sept. 19, 2020, 1 a.m. | N/A | 0.0 ppb (0) | 0.4 ppb (0) | N/A | 0.5 ppb (0) | 0.0 ppb (0) | 19.0 ppb (15) | 0.04 ppb (0) | N/A | 1.8 μg/m3 (8) | 15.0 | |
| Sept. 19, 2020, midnight | N/A | 0.0 ppb (0) | 0.5 ppb (0) | N/A | 0.5 ppb (0) | 0.0 ppb (0) | 20.0 ppb (15) | 0.04 ppb (0) | N/A | 1.7 μg/m3 (7) | 15.0 | |
| Sept. 18, 2020, 11 p.m. | N/A | 0.0 ppb (0) | 0.6 ppb (1) | N/A | 0.6 ppb (1) | 0.0 ppb (0) | 20.0 ppb (15) | 0.05 ppb (1) | N/A | 2.1 μg/m3 (9) | 15.0 | |
| Sept. 18, 2020, 10 p.m. | N/A | 0.0 ppb (0) | 0.6 ppb (1) | N/A | 0.7 ppb (1) | 0.0 ppb (0) | 24.0 ppb (18) | 0.05 ppb (1) | N/A | 2.2 μg/m3 (9) | 18.0 | |
| Sept. 18, 2020, 9 p.m. | N/A | 0.0 ppb (0) | 0.7 ppb (1) | N/A | 0.6 ppb (1) | 0.0 ppb (0) | 26.0 ppb (20) | 0.05 ppb (1) | N/A | 1.8 μg/m3 (8) | 20.0 | |
| Sept. 18, 2020, 8 p.m. | N/A | 0.0 ppb (0) | 0.7 ppb (1) | N/A | 0.6 ppb (1) | 0.0 ppb (0) | 27.0 ppb (21) | 0.06 ppb (1) | N/A | 2.3 μg/m3 (10) | 21.0 | |
| Sept. 18, 2020, 7 p.m. | N/A | 0.1 ppb (0) | 0.7 ppb (1) | N/A | 0.7 ppb (1) | 0.0 ppb (0) | 28.0 ppb (22) | 0.07 ppb (1) | N/A | 2.0 μg/m3 (8) | 22.0 | |
| Sept. 18, 2020, 6 p.m. | N/A | 0.1 ppb (0) | 0.7 ppb (1) | N/A | 0.6 ppb (1) | 0.0 ppb (0) | 28.0 ppb (22) | 0.07 ppb (1) | N/A | 1.8 μg/m3 (8) | 22.0 | |
| Sept. 18, 2020, 5 p.m. | N/A | 0.0 ppb (0) | 0.5 ppb (0) | N/A | 0.4 ppb (0) | 0.0 ppb (0) | 27.0 ppb (21) | 0.06 ppb (1) | N/A | 1.6 μg/m3 (7) | 21.0 | |
| Sept. 18, 2020, 4 p.m. | N/A | 0.0 ppb (0) | 0.4 ppb (0) | N/A | 0.4 ppb (0) | 0.0 ppb (0) | 25.0 ppb (19) | 0.06 ppb (1) | N/A | 1.7 μg/m3 (7) | 19.0 | |
| Sept. 18, 2020, 3 p.m. | N/A | 0.0 ppb (0) | 0.4 ppb (0) | N/A | 0.3 ppb (0) | 0.0 ppb (0) | 22.0 ppb (17) | 0.06 ppb (1) | N/A | 2.3 μg/m3 (10) | 17.0 | |
| Sept. 18, 2020, 2 p.m. | N/A | 0.1 ppb (0) | 0.6 ppb (1) | N/A | 0.5 ppb (0) | 0.0 ppb (0) | 20.0 ppb (15) | 0.06 ppb (1) | N/A | 3.5 μg/m3 (15) | 15.0 | |
| Sept. 18, 2020, 1 p.m. | N/A | 0.2 ppb (0) | 0.7 ppb (1) | N/A | 0.5 ppb (0) | 0.0 ppb (0) | 13.0 ppb (10) | 0.05 ppb (1) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| Sept. 18, 2020, noon | N/A | 0.3 ppb (0) | 0.9 ppb (1) | N/A | 0.5 ppb (0) | 0.0 ppb (0) | 7.0 ppb (5) | 0.05 ppb (1) | N/A | 3.2 μg/m3 (13) | 13.0 | |
| Sept. 18, 2020, 11 a.m. | N/A | 0.1 ppb (0) | 0.8 ppb (1) | N/A | 0.7 ppb (1) | 0.0 ppb (0) | 8.0 ppb (6) | 0.04 ppb (0) | N/A | 3.5 μg/m3 (15) | 15.0 | |
| Sept. 18, 2020, 10 a.m. | N/A | 0.0 ppb (0) | 0.5 ppb (0) | N/A | 0.6 ppb (1) | 0.0 ppb (0) | 8.0 ppb (6) | 0.04 ppb (0) | N/A | 4.2 μg/m3 (18) | 18.0 | |
| Sept. 18, 2020, 9 a.m. | N/A | 0.0 ppb (0) | 0.6 ppb (1) | N/A | 0.6 ppb (1) | 0.0 ppb (0) | 9.0 ppb (7) | 0.04 ppb (0) | N/A | 4.2 μg/m3 (18) | 18.0 | |
| Sept. 18, 2020, 8 a.m. | N/A | 0.0 ppb (0) | 0.7 ppb (1) | N/A | 0.8 ppb (1) | 0.0 ppb (0) | 11.0 ppb (8) | N/A | N/A | 4.3 μg/m3 (18) | 18.0 | |
| Sept. 18, 2020, 7 a.m. | N/A | 0.0 ppb (0) | 0.7 ppb (1) | N/A | 0.8 ppb (1) | N/A | 11.0 ppb (8) | 0.04 ppb (0) | N/A | 4.8 μg/m3 (20) | 20.0 | |
| Sept. 18, 2020, 6 a.m. | N/A | 0.0 ppb (0) | 0.8 ppb (1) | N/A | 0.8 ppb (1) | 0.0 ppb (0) | N/A | 0.04 ppb (0) | N/A | 5.7 μg/m3 (24) | 24.0 | |
| Sept. 18, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 14.0 ppb (11) | 0.04 ppb (0) | N/A | 5.1 μg/m3 (21) | 21.0 | |
| Sept. 18, 2020, 4 a.m. | N/A | 0.0 ppb (0) | 0.8 ppb (1) | N/A | 0.9 ppb (1) | 0.0 ppb (0) | 14.0 ppb (11) | 0.04 ppb (0) | N/A | 5.1 μg/m3 (21) | 21.0 | |
| Sept. 18, 2020, 3 a.m. | N/A | 0.0 ppb (0) | 0.9 ppb (1) | N/A | 0.9 ppb (1) | 0.0 ppb (0) | 13.0 ppb (10) | 0.03 ppb (0) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| Sept. 18, 2020, 2 a.m. | N/A | 0.0 ppb (0) | 0.9 ppb (1) | N/A | 0.9 ppb (1) | 0.0 ppb (0) | 14.0 ppb (11) | 0.03 ppb (0) | N/A | 5.1 μg/m3 (21) | 21.0 | |
| Sept. 18, 2020, 1 a.m. | N/A | 0.0 ppb (0) | 1.1 ppb (1) | N/A | 1.1 ppb (1) | 0.0 ppb (0) | 12.0 ppb (9) | 0.03 ppb (0) | N/A | 5.7 μg/m3 (24) | 24.0 | |
| Sept. 18, 2020, midnight | N/A | 0.0 ppb (0) | 1.2 ppb (1) | N/A | 1.2 ppb (1) | 0.0 ppb (0) | 14.0 ppb (11) | 0.03 ppb (0) | N/A | 5.8 μg/m3 (24) | 24.0 | |
| Sept. 17, 2020, 11 p.m. | N/A | 0.0 ppb (0) | 1.1 ppb (1) | N/A | 1.2 ppb (1) | 0.0 ppb (0) | 16.0 ppb (12) | 0.04 ppb (0) | N/A | 5.7 μg/m3 (24) | 24.0 | |
| Sept. 17, 2020, 10 p.m. | N/A | 0.0 ppb (0) | 1.2 ppb (1) | N/A | 1.2 ppb (1) | 0.0 ppb (0) | 19.0 ppb (15) | 0.04 ppb (0) | N/A | 5.5 μg/m3 (23) | 23.0 | |
| Sept. 17, 2020, 9 p.m. | N/A | 0.1 ppb (0) | 1.4 ppb (1) | N/A | 1.3 ppb (1) | 0.0 ppb (0) | 21.0 ppb (16) | 0.05 ppb (1) | N/A | 5.9 μg/m3 (25) | 25.0 | |
| Sept. 17, 2020, 8 p.m. | N/A | 0.1 ppb (0) | 1.3 ppb (1) | N/A | 1.2 ppb (1) | 0.0 ppb (0) | 21.0 ppb (16) | 0.05 ppb (1) | N/A | 6.2 μg/m3 (26) | 26.0 | |
| Sept. 17, 2020, 7 p.m. | N/A | 0.1 ppb (0) | 1.1 ppb (1) | N/A | 1.0 ppb (1) | 0.0 ppb (0) | 20.0 ppb (15) | 0.06 ppb (1) | N/A | 6.2 μg/m3 (26) | 26.0 | |
| Sept. 17, 2020, 6 p.m. | N/A | 0.1 ppb (0) | 1.1 ppb (1) | N/A | 0.9 ppb (1) | 0.0 ppb (0) | 18.0 ppb (14) | 0.06 ppb (1) | N/A | 6.8 μg/m3 (28) | 28.0 | |
| Sept. 17, 2020, 5 p.m. | N/A | 0.2 ppb (0) | 1.3 ppb (1) | N/A | 1.1 ppb (1) | 0.0 ppb (0) | 19.0 ppb (15) | 0.07 ppb (1) | N/A | 7.3 μg/m3 (30) | 30.0 | |
| Sept. 17, 2020, 4 p.m. | N/A | 0.1 ppb (0) | 1.3 ppb (1) | N/A | 1.1 ppb (1) | 0.0 ppb (0) | 16.0 ppb (12) | 0.07 ppb (1) | N/A | 6.9 μg/m3 (29) | 29.0 | |
| Sept. 17, 2020, 3 p.m. | N/A | 0.1 ppb (0) | 1.4 ppb (1) | N/A | 1.2 ppb (1) | 0.0 ppb (0) | 16.0 ppb (12) | 0.07 ppb (1) | N/A | 6.6 μg/m3 (28) | 28.0 | |
| Sept. 17, 2020, 2 p.m. | N/A | 0.1 ppb (0) | 1.0 ppb (1) | N/A | 0.9 ppb (1) | 0.0 ppb (0) | 15.0 ppb (12) | 0.07 ppb (1) | N/A | 6.3 μg/m3 (26) | 26.0 | |
| Sept. 17, 2020, 1 p.m. | N/A | 0.0 ppb (0) | 1.0 ppb (1) | N/A | 1.0 ppb (1) | 0.0 ppb (0) | 18.0 ppb (14) | 0.07 ppb (1) | N/A | 6.4 μg/m3 (27) | 27.0 | |
| Sept. 17, 2020, noon | N/A | 0.0 ppb (0) | 0.9 ppb (1) | N/A | 0.9 ppb (1) | 0.0 ppb (0) | 20.0 ppb (15) | 0.07 ppb (1) | N/A | 7.2 μg/m3 (30) | 30.0 | |
| Sept. 17, 2020, 11 a.m. | N/A | 0.0 ppb (0) | 2.1 ppb (2) | N/A | 2.1 ppb (2) | 0.0 ppb (0) | 27.0 ppb (21) | 0.07 ppb (1) | N/A | 5.3 μg/m3 (22) | 22.0 | |
| Sept. 17, 2020, 10 a.m. | N/A | 0.0 ppb (0) | 2.2 ppb (2) | N/A | 2.2 ppb (2) | 0.0 ppb (0) | 28.0 ppb (22) | 0.06 ppb (1) | N/A | 4.3 μg/m3 (18) | 22.0 | |
| Sept. 17, 2020, 9 a.m. | N/A | 0.0 ppb (0) | 2.1 ppb (2) | N/A | 2.2 ppb (2) | 0.0 ppb (0) | 30.0 ppb (23) | 0.06 ppb (1) | N/A | 4.1 μg/m3 (17) | 23.0 | |
| Sept. 17, 2020, 8 a.m. | N/A | 0.0 ppb (0) | 2.1 ppb (2) | N/A | 2.1 ppb (2) | 0.0 ppb (0) | 33.0 ppb (25) | N/A | N/A | 4.0 μg/m3 (17) | 25.0 | |
| Sept. 17, 2020, 7 a.m. | N/A | 0.0 ppb (0) | 2.0 ppb (2) | N/A | 2.0 ppb (2) | N/A | 34.0 ppb (26) | 0.05 ppb (1) | N/A | 3.8 μg/m3 (16) | 26.0 | |
| Sept. 17, 2020, 6 a.m. | N/A | 0.0 ppb (0) | 1.9 ppb (2) | N/A | 1.9 ppb (2) | 0.0 ppb (0) | N/A | 0.04 ppb (0) | N/A | 3.5 μg/m3 (15) | 15.0 | |
| Sept. 17, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | 36.0 ppb (28) | 0.03 ppb (0) | N/A | 3.5 μg/m3 (15) | 28.0 | |
| Sept. 17, 2020, 4 a.m. | N/A | 0.0 ppb (0) | 1.8 ppb (2) | N/A | 1.8 ppb (2) | 0.0 ppb (0) | 36.0 ppb (28) | 0.03 ppb (0) | N/A | 3.5 μg/m3 (15) | 28.0 | |
| Sept. 17, 2020, 3 a.m. | N/A | 0.0 ppb (0) | 1.8 ppb (2) | N/A | 1.8 ppb (2) | 1.0 ppb (1) | 37.0 ppb (28) | 0.04 ppb (0) | N/A | 3.4 μg/m3 (14) | 28.0 | |
| Sept. 17, 2020, 2 a.m. | N/A | 0.0 ppb (0) | 1.8 ppb (2) | N/A | 1.8 ppb (2) | 0.0 ppb (0) | 38.0 ppb (29) | 0.03 ppb (0) | N/A | 3.4 μg/m3 (14) | 29.0 | |
| Sept. 17, 2020, 1 a.m. | N/A | 0.0 ppb (0) | 1.8 ppb (2) | N/A | 1.8 ppb (2) | 0.0 ppb (0) | 40.0 ppb (31) | 0.04 ppb (0) | N/A | 3.4 μg/m3 (14) | 31.0 | |
| Sept. 17, 2020, midnight | N/A | 0.0 ppb (0) | 1.6 ppb (1) | N/A | 1.7 ppb (2) | 1.0 ppb (1) | 42.0 ppb (32) | 0.03 ppb (0) | N/A | 3.3 μg/m3 (14) | 32.0 | |
| Sept. 16, 2020, 11 p.m. | N/A | 0.0 ppb (0) | 1.5 ppb (1) | N/A | 1.5 ppb (1) | 1.0 ppb (1) | 42.0 ppb (32) | 0.03 ppb (0) | N/A | 3.2 μg/m3 (13) | 32.0 | |
| Sept. 16, 2020, 10 p.m. | N/A | 0.0 ppb (0) | 1.2 ppb (1) | N/A | 1.3 ppb (1) | 0.0 ppb (0) | 43.0 ppb (33) | 0.03 ppb (0) | N/A | 2.9 μg/m3 (12) | 33.0 | |
| Sept. 16, 2020, 9 p.m. | N/A | 0.0 ppb (0) | 0.9 ppb (1) | N/A | 0.9 ppb (1) | 0.0 ppb (0) | 42.0 ppb (32) | 0.02 ppb (0) | N/A | 2.4 μg/m3 (10) | 32.0 | |
| Sept. 16, 2020, 8 p.m. | N/A | 0.0 ppb (0) | 0.9 ppb (1) | N/A | 0.9 ppb (1) | 0.0 ppb (0) | 39.0 ppb (30) | 0.01 ppb (0) | N/A | 2.2 μg/m3 (9) | 30.0 | |
| Sept. 16, 2020, 7 p.m. | N/A | 0.0 ppb (0) | 0.9 ppb (1) | N/A | 0.9 ppb (1) | 0.0 ppb (0) | N/A | 0.02 ppb (0) | N/A | 2.0 μg/m3 (8) | 8.0 | |
| Sept. 16, 2020, 6 p.m. | N/A | 0.0 ppb (0) | 0.8 ppb (1) | N/A | 0.8 ppb (1) | 0.0 ppb (0) | N/A | N/A | N/A | 2.0 μg/m3 (8) | 8.0 | |
| Sept. 16, 2020, 5 p.m. | N/A | 0.0 ppb (0) | 0.8 ppb (1) | N/A | 0.8 ppb (1) | 0.0 ppb (0) | N/A | N/A | N/A | 2.0 μg/m3 (8) | 8.0 | |
| Sept. 16, 2020, 4 p.m. | N/A | 0.0 ppb (0) | 0.8 ppb (1) | N/A | 0.8 ppb (1) | 0.0 ppb (0) | N/A | N/A | N/A | 1.8 μg/m3 (8) | 8.0 |