Bridgeton MO, US: 38.75264, -90.44884
| Date Observed (UTC) | NOX | NO | NOY | NO2 | NO2Y | SO2 | OZONE | CO | PM10 | PM2.5 | AQI | AQI/500 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| March 26, 2019, 9 a.m. | 5.7 ppb (5) | -0.5 ppb (0) | N/A | 6.0 ppb (6) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 6.0 | |
| March 26, 2019, 8 a.m. | 2.9 ppb (3) | -0.6 ppb (0) | N/A | 4.0 ppb (4) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 4.0 | |
| March 26, 2019, 7 a.m. | 2.4 ppb (2) | -0.6 ppb (0) | N/A | 3.0 ppb (3) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 3.0 | |
| March 26, 2019, 6 a.m. | 3.1 ppb (3) | -0.5 ppb (0) | N/A | 4.0 ppb (4) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 4.0 | |
| March 26, 2019, 5 a.m. | 5.4 ppb (5) | -0.5 ppb (0) | N/A | 6.0 ppb (6) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 6.0 | |
| March 26, 2019, 4 a.m. | 6.1 ppb (6) | -0.3 ppb (0) | N/A | 6.0 ppb (6) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 6.0 | |
| March 26, 2019, 3 a.m. | 6.7 ppb (6) | -0.4 ppb (0) | N/A | 7.0 ppb (6) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 6.0 | |
| March 26, 2019, 2 a.m. | 5.7 ppb (5) | -0.4 ppb (0) | N/A | 6.0 ppb (6) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 6.0 | |
| March 26, 2019, 1 a.m. | 4.9 ppb (5) | -0.3 ppb (0) | N/A | 5.0 ppb (5) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 5.0 | |
| March 26, 2019, midnight | 2.7 ppb (3) | -0.4 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 3.0 | |
| March 25, 2019, 11 p.m. | 1.9 ppb (2) | -0.3 ppb (0) | N/A | 2.0 ppb (2) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 2.0 | |
| March 25, 2019, 10 p.m. | 2.3 ppb (2) | -0.2 ppb (0) | N/A | 3.0 ppb (3) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 3.0 | |
| March 25, 2019, 9 p.m. | 2.2 ppb (2) | -0.2 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 2.0 | |
| March 25, 2019, 8 p.m. | 1.9 ppb (2) | -0.1 ppb (0) | N/A | 2.0 ppb (2) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 2.0 | |
| March 25, 2019, 7 p.m. | 2.2 ppb (2) | 0.2 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 2.0 | |
| March 25, 2019, 6 p.m. | 2.7 ppb (3) | 0.3 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 3.0 | |
| March 25, 2019, 5 p.m. | 2.8 ppb (3) | 0.6 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 3.0 | |
| March 25, 2019, 4 p.m. | 3.1 ppb (3) | 0.7 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 3.0 | |
| March 25, 2019, 3 p.m. | 3.3 ppb (3) | 0.3 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 3.0 | |
| March 25, 2019, 2 p.m. | 3.6 ppb (3) | 0.1 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 3.0 | |
| March 25, 2019, 1 p.m. | 2.8 ppb (3) | -0.3 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 3.0 | |
| March 25, 2019, noon | 4.2 ppb (4) | -0.1 ppb (0) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 4.0 | |
| March 25, 2019, 11 a.m. | 5.0 ppb (5) | 0.1 ppb (0) | N/A | 5.0 ppb (5) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 5.0 | |
| March 25, 2019, 10 a.m. | 2.4 ppb (2) | -0.2 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 3.0 | |
| March 25, 2019, 9 a.m. | 2.1 ppb (2) | -0.4 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 2.0 | |
| March 25, 2019, 8 a.m. | 1.4 ppb (1) | -0.4 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 2.0 | |
| March 25, 2019, 7 a.m. | 1.2 ppb (1) | -0.4 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 2.0 | |
| March 25, 2019, 6 a.m. | 1.5 ppb (1) | -0.4 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 2.0 | |
| March 25, 2019, 5 a.m. | 4.4 ppb (4) | -0.3 ppb (0) | N/A | 5.0 ppb (5) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 5.0 | |
| March 25, 2019, 4 a.m. | 5.8 ppb (5) | -0.2 ppb (0) | N/A | 6.0 ppb (6) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 6.0 | |
| March 25, 2019, 3 a.m. | 6.2 ppb (6) | -0.1 ppb (0) | N/A | 6.0 ppb (6) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 6.0 | |
| March 25, 2019, 2 a.m. | 2.9 ppb (3) | -0.4 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 3.0 | |
| March 25, 2019, 1 a.m. | 3.1 ppb (3) | -0.4 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 3.0 | |
| March 25, 2019, midnight | 15.7 ppb (15) | 1.1 ppb (1) | N/A | 15.0 ppb (14) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 15.0 | |
| March 24, 2019, 11 p.m. | 13.1 ppb (12) | 0.1 ppb (0) | N/A | 13.0 ppb (12) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 12.0 | |
| March 24, 2019, 10 p.m. | 11.7 ppb (11) | 0.8 ppb (1) | N/A | 11.0 ppb (10) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 11.0 | |
| March 24, 2019, 9 p.m. | 7.9 ppb (7) | 1.1 ppb (1) | N/A | 7.0 ppb (6) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 7.0 | |
| March 24, 2019, 8 p.m. | 13.5 ppb (12) | 3.5 ppb (3) | N/A | 10.0 ppb (9) | N/A | 2.0 ppb (3) | N/A | N/A | N/A | N/A | 12.0 | |
| March 24, 2019, 7 p.m. | 11.7 ppb (11) | 3.3 ppb (3) | N/A | 8.0 ppb (7) | N/A | 3.0 ppb (4) | N/A | N/A | N/A | N/A | 11.0 | |
| March 24, 2019, 6 p.m. | 11.5 ppb (11) | 3.5 ppb (3) | N/A | 8.0 ppb (7) | N/A | 2.0 ppb (3) | N/A | N/A | N/A | N/A | 11.0 | |
| March 24, 2019, 5 p.m. | 15.2 ppb (14) | 6.1 ppb (6) | N/A | 9.0 ppb (8) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 14.0 | |
| March 24, 2019, 4 p.m. | 19.4 ppb (18) | 8.3 ppb (8) | N/A | 11.0 ppb (10) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 18.0 | |
| March 24, 2019, 3 p.m. | 25.3 ppb (23) | 9.7 ppb (9) | N/A | 15.0 ppb (14) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 23.0 | |
| March 24, 2019, 2 p.m. | 26.5 ppb (25) | 9.4 ppb (9) | N/A | 17.0 ppb (16) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 25.0 | |
| March 24, 2019, 1 p.m. | 22.3 ppb (21) | 6.4 ppb (6) | N/A | 16.0 ppb (15) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 21.0 | |
| March 24, 2019, noon | 15.9 ppb (15) | 3.5 ppb (3) | N/A | 12.0 ppb (11) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 15.0 | |
| March 24, 2019, 11 a.m. | 13.5 ppb (12) | 2.4 ppb (2) | N/A | 11.0 ppb (10) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 12.0 | |
| March 24, 2019, 10 a.m. | 17.5 ppb (16) | 2.5 ppb (2) | N/A | 15.0 ppb (14) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 16.0 | |
| March 24, 2019, 9 a.m. | 25.4 ppb (24) | 3.9 ppb (4) | N/A | 21.0 ppb (19) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 24.0 | |
| March 24, 2019, 8 a.m. | 16.6 ppb (15) | -0.3 ppb (0) | N/A | 17.0 ppb (16) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 16.0 | |
| March 24, 2019, 7 a.m. | 12.9 ppb (12) | -0.3 ppb (0) | N/A | 13.0 ppb (12) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 12.0 | |
| March 24, 2019, 6 a.m. | 14.0 ppb (13) | 0.0 ppb (0) | N/A | 14.0 ppb (13) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 13.0 | |
| March 24, 2019, 5 a.m. | 11.0 ppb (10) | 1.6 ppb (1) | N/A | 9.0 ppb (8) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 10.0 | |
| March 24, 2019, 4 a.m. | 6.1 ppb (6) | 1.1 ppb (1) | N/A | 5.0 ppb (5) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 6.0 | |
| March 24, 2019, 3 a.m. | 14.5 ppb (13) | 4.0 ppb (4) | N/A | 10.0 ppb (9) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 13.0 | |
| March 24, 2019, 2 a.m. | 16.4 ppb (15) | 5.0 ppb (5) | N/A | 11.0 ppb (10) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 15.0 | |
| March 24, 2019, 1 a.m. | 15.5 ppb (14) | 4.4 ppb (4) | N/A | 11.0 ppb (10) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 14.0 | |
| March 24, 2019, midnight | 21.5 ppb (20) | 5.9 ppb (5) | N/A | 15.0 ppb (14) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 20.0 | |
| March 23, 2019, 11 p.m. | 24.6 ppb (23) | 7.5 ppb (7) | N/A | 17.0 ppb (16) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 23.0 | |
| March 23, 2019, 10 p.m. | 21.7 ppb (20) | 6.5 ppb (6) | N/A | 15.0 ppb (14) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 20.0 | |
| March 23, 2019, 9 p.m. | 19.7 ppb (18) | 7.1 ppb (7) | N/A | 13.0 ppb (12) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 18.0 | |
| March 23, 2019, 8 p.m. | 21.3 ppb (20) | 7.6 ppb (7) | N/A | 14.0 ppb (13) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 20.0 | |
| March 23, 2019, 7 p.m. | 16.6 ppb (15) | 6.0 ppb (6) | N/A | 11.0 ppb (10) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 15.0 | |
| March 23, 2019, 6 p.m. | 12.0 ppb (11) | 3.8 ppb (4) | N/A | 8.0 ppb (7) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 11.0 | |
| March 23, 2019, 5 p.m. | 17.0 ppb (16) | 6.8 ppb (6) | N/A | 10.0 ppb (9) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 16.0 | |
| March 23, 2019, 4 p.m. | 19.2 ppb (18) | 7.5 ppb (7) | N/A | 12.0 ppb (11) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 18.0 | |
| March 23, 2019, 3 p.m. | 20.1 ppb (19) | 8.6 ppb (8) | N/A | 11.0 ppb (10) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 19.0 | |
| March 23, 2019, 2 p.m. | 25.1 ppb (23) | 10.8 ppb (10) | N/A | 14.0 ppb (13) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 23.0 | |
| March 23, 2019, 1 p.m. | 20.2 ppb (19) | 4.9 ppb (5) | N/A | 15.0 ppb (14) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 19.0 | |
| March 23, 2019, noon | 23.1 ppb (21) | 1.4 ppb (1) | N/A | 22.0 ppb (20) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 21.0 | |
| March 23, 2019, 11 a.m. | 22.4 ppb (21) | 1.0 ppb (1) | N/A | 21.0 ppb (19) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 21.0 | |
| March 23, 2019, 10 a.m. | 23.8 ppb (22) | 2.4 ppb (2) | N/A | 21.0 ppb (19) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 22.0 | |
| March 23, 2019, 9 a.m. | 22.8 ppb (21) | 2.5 ppb (2) | N/A | 20.0 ppb (19) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 21.0 | |
| March 23, 2019, 8 a.m. | 15.7 ppb (15) | 1.3 ppb (1) | N/A | 14.0 ppb (13) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 15.0 | |
| March 23, 2019, 7 a.m. | 10.7 ppb (10) | 0.3 ppb (0) | N/A | 10.0 ppb (9) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 10.0 | |
| March 23, 2019, 6 a.m. | 10.5 ppb (10) | 0.1 ppb (0) | N/A | 10.0 ppb (9) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 10.0 | |
| March 23, 2019, 5 a.m. | 11.0 ppb (10) | -0.2 ppb (0) | N/A | 11.0 ppb (10) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 10.0 | |
| March 23, 2019, 4 a.m. | 7.9 ppb (7) | -0.5 ppb (0) | N/A | 8.0 ppb (7) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 7.0 | |
| March 23, 2019, 3 a.m. | 10.0 ppb (9) | -0.2 ppb (0) | N/A | 10.0 ppb (9) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 9.0 | |
| March 23, 2019, 2 a.m. | 11.7 ppb (11) | -0.1 ppb (0) | N/A | 12.0 ppb (11) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 11.0 | |
| March 23, 2019, 1 a.m. | 2.0 ppb (2) | -0.5 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 2.0 | |
| March 23, 2019, midnight | 3.9 ppb (4) | 0.2 ppb (0) | N/A | 4.0 ppb (4) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 4.0 | |
| March 22, 2019, 11 p.m. | 1.8 ppb (2) | -0.2 ppb (0) | N/A | 2.0 ppb (2) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 2.0 | |
| March 22, 2019, 10 p.m. | 1.2 ppb (1) | -0.3 ppb (0) | N/A | 1.0 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 1.0 | |
| March 22, 2019, 9 p.m. | 1.5 ppb (1) | -0.2 ppb (0) | N/A | 2.0 ppb (2) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 2.0 | |
| March 22, 2019, 8 p.m. | 2.6 ppb (2) | 0.4 ppb (0) | N/A | 2.0 ppb (2) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 2.0 | |
| March 22, 2019, 7 p.m. | 6.3 ppb (6) | 2.4 ppb (2) | N/A | 4.0 ppb (4) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 6.0 | |
| March 22, 2019, 6 p.m. | 4.1 ppb (4) | 1.1 ppb (1) | N/A | 3.0 ppb (3) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 4.0 | |
| March 22, 2019, 5 p.m. | 2.0 ppb (2) | 0.2 ppb (0) | N/A | 2.0 ppb (2) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 2.0 | |
| March 22, 2019, 4 p.m. | 4.6 ppb (4) | 1.8 ppb (2) | N/A | 3.0 ppb (3) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 4.0 | |
| March 22, 2019, 3 p.m. | 7.9 ppb (7) | 3.2 ppb (3) | N/A | 5.0 ppb (5) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 7.0 | |
| March 22, 2019, 2 p.m. | 4.9 ppb (5) | 1.4 ppb (1) | N/A | 4.0 ppb (4) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 5.0 | |
| March 22, 2019, 1 p.m. | 14.2 ppb (13) | 4.8 ppb (4) | N/A | 9.0 ppb (8) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 13.0 | |
| March 22, 2019, noon | 37.4 ppb (35) | 13.8 ppb (13) | N/A | 23.0 ppb (21) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 35.0 | |
| March 22, 2019, 11 a.m. | 45.4 ppb (42) | 18.5 ppb (17) | N/A | 27.0 ppb (25) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 42.0 | |
| March 22, 2019, 10 a.m. | 32.7 ppb (30) | 9.6 ppb (9) | N/A | 23.0 ppb (21) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 30.0 | |
| March 22, 2019, 9 a.m. | 22.8 ppb (21) | 4.6 ppb (4) | N/A | 18.0 ppb (17) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 21.0 | |
| March 22, 2019, 8 a.m. | 20.7 ppb (19) | 6.0 ppb (6) | N/A | 15.0 ppb (14) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 19.0 | |
| March 22, 2019, 7 a.m. | 16.7 ppb (15) | 4.2 ppb (4) | N/A | 12.0 ppb (11) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 15.0 | |
| March 22, 2019, 6 a.m. | 20.7 ppb (19) | 5.2 ppb (5) | N/A | 15.0 ppb (14) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 19.0 | |
| March 22, 2019, 5 a.m. | 25.1 ppb (23) | 6.2 ppb (6) | N/A | 19.0 ppb (18) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 23.0 | |
| March 22, 2019, 4 a.m. | 33.7 ppb (31) | 9.0 ppb (8) | N/A | 25.0 ppb (23) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 31.0 | |
| March 22, 2019, 3 a.m. | 37.2 ppb (34) | 12.1 ppb (11) | N/A | 25.0 ppb (23) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 34.0 | |
| March 22, 2019, 2 a.m. | 39.0 ppb (36) | 11.5 ppb (11) | N/A | 27.0 ppb (25) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 36.0 | |
| March 22, 2019, 1 a.m. | 19.7 ppb (18) | 4.7 ppb (4) | N/A | 15.0 ppb (14) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 18.0 | |
| March 22, 2019, midnight | 3.8 ppb (4) | -0.3 ppb (0) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 4.0 | |
| March 21, 2019, 11 p.m. | 1.2 ppb (1) | -0.4 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 2.0 | |
| March 21, 2019, 10 p.m. | 1.5 ppb (1) | -0.1 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 2.0 | |
| March 21, 2019, 9 p.m. | 1.9 ppb (2) | 0.3 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 2.0 | |
| March 21, 2019, 8 p.m. | 2.3 ppb (2) | 0.5 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 2.0 | |
| March 21, 2019, 7 p.m. | 1.6 ppb (1) | 0.2 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 1.0 | |
| March 21, 2019, 6 p.m. | 2.3 ppb (2) | 0.3 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 2.0 | |
| March 21, 2019, 5 p.m. | 2.1 ppb (2) | 0.4 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 2.0 | |
| March 21, 2019, 4 p.m. | 2.6 ppb (2) | 1.0 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 2.0 | |
| March 21, 2019, 3 p.m. | 2.7 ppb (3) | 0.4 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 3.0 | |
| March 21, 2019, 2 p.m. | 2.9 ppb (3) | 0.4 ppb (0) | N/A | 2.0 ppb (2) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 3.0 | |
| March 21, 2019, 1 p.m. | 4.2 ppb (4) | 0.5 ppb (0) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 4.0 | |
| March 21, 2019, noon | 5.1 ppb (5) | 0.1 ppb (0) | N/A | 5.0 ppb (5) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 5.0 | |
| March 21, 2019, 11 a.m. | 3.9 ppb (4) | 0.1 ppb (0) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 4.0 | |
| March 21, 2019, 10 a.m. | 2.9 ppb (3) | -0.4 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 3.0 | |
| March 21, 2019, 9 a.m. | 2.5 ppb (2) | -0.4 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 3.0 | |
| March 21, 2019, 8 a.m. | 2.3 ppb (2) | -0.5 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 3.0 | |
| March 21, 2019, 7 a.m. | 18.5 ppb (17) | 2.9 ppb (3) | N/A | 16.0 ppb (15) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 17.0 | |
| March 21, 2019, 6 a.m. | 15.6 ppb (14) | 3.6 ppb (3) | N/A | 12.0 ppb (11) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 14.0 | |
| March 21, 2019, 5 a.m. | 11.0 ppb (10) | 2.8 ppb (3) | N/A | 8.0 ppb (7) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 10.0 | |
| March 21, 2019, 4 a.m. | 10.8 ppb (10) | 2.8 ppb (3) | N/A | 8.0 ppb (7) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 10.0 | |
| March 21, 2019, 3 a.m. | 20.8 ppb (19) | 6.6 ppb (6) | N/A | 14.0 ppb (13) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 19.0 | |
| March 21, 2019, 2 a.m. | 15.7 ppb (15) | 3.6 ppb (3) | N/A | 12.0 ppb (11) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 15.0 | |
| March 21, 2019, 1 a.m. | 23.4 ppb (22) | 7.4 ppb (7) | N/A | 16.0 ppb (15) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 22.0 | |
| March 21, 2019, midnight | 23.4 ppb (22) | 7.4 ppb (7) | N/A | 16.0 ppb (15) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 22.0 | |
| March 20, 2019, 11 p.m. | 23.7 ppb (22) | 10.5 ppb (10) | N/A | 13.0 ppb (12) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 22.0 | |
| March 20, 2019, 10 p.m. | 25.5 ppb (24) | 12.0 ppb (11) | N/A | 13.0 ppb (12) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 24.0 | |
| March 20, 2019, 9 p.m. | 27.2 ppb (25) | 10.4 ppb (10) | N/A | 17.0 ppb (16) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 25.0 | |
| March 20, 2019, 8 p.m. | 27.5 ppb (25) | 12.6 ppb (12) | N/A | 15.0 ppb (14) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 25.0 | |
| March 20, 2019, 7 p.m. | 28.5 ppb (26) | 14.6 ppb (14) | N/A | 14.0 ppb (13) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 26.0 | |
| March 20, 2019, 6 p.m. | 32.9 ppb (30) | 17.9 ppb (17) | N/A | 15.0 ppb (14) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 30.0 | |
| March 20, 2019, 5 p.m. | 22.4 ppb (21) | 9.4 ppb (9) | N/A | 13.0 ppb (12) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 21.0 | |
| March 20, 2019, 4 p.m. | 25.7 ppb (24) | 12.8 ppb (12) | N/A | 13.0 ppb (12) | N/A | 3.0 ppb (4) | N/A | N/A | N/A | N/A | 24.0 | |
| March 20, 2019, 3 p.m. | 23.9 ppb (22) | 10.6 ppb (10) | N/A | 13.0 ppb (12) | N/A | 2.0 ppb (3) | N/A | N/A | N/A | N/A | 22.0 | |
| March 20, 2019, 2 p.m. | 31.1 ppb (29) | 13.3 ppb (12) | N/A | 18.0 ppb (17) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 29.0 | |
| March 20, 2019, 1 p.m. | 40.6 ppb (38) | 17.3 ppb (16) | N/A | 23.0 ppb (21) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 38.0 | |
| March 20, 2019, noon | 39.6 ppb (37) | 15.2 ppb (14) | N/A | 24.0 ppb (22) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 37.0 | |
| March 20, 2019, 11 a.m. | 40.8 ppb (38) | 14.3 ppb (13) | N/A | 26.0 ppb (24) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 38.0 | |
| March 20, 2019, 10 a.m. | 23.7 ppb (22) | 8.4 ppb (8) | N/A | 15.0 ppb (14) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 22.0 | |
| March 20, 2019, 9 a.m. | 8.4 ppb (8) | 2.1 ppb (2) | N/A | 6.0 ppb (6) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 8.0 | |
| March 20, 2019, 8 a.m. | 6.6 ppb (6) | 1.9 ppb (2) | N/A | 5.0 ppb (5) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 6.0 | |
| March 20, 2019, 7 a.m. | 5.1 ppb (5) | 1.2 ppb (1) | N/A | 4.0 ppb (4) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 5.0 | |
| March 20, 2019, 6 a.m. | 7.0 ppb (6) | 1.6 ppb (1) | N/A | 5.0 ppb (5) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 6.0 | |
| March 20, 2019, 5 a.m. | 7.7 ppb (7) | 1.6 ppb (1) | N/A | 6.0 ppb (6) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 7.0 | |
| March 20, 2019, 4 a.m. | 12.2 ppb (11) | 3.1 ppb (3) | N/A | 9.0 ppb (8) | N/A | 2.0 ppb (3) | N/A | N/A | N/A | N/A | 11.0 | |
| March 20, 2019, 3 a.m. | 14.3 ppb (13) | 4.7 ppb (4) | N/A | 10.0 ppb (9) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 13.0 | |
| March 20, 2019, 2 a.m. | 20.1 ppb (19) | 5.7 ppb (5) | N/A | 14.0 ppb (13) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 19.0 | |
| March 20, 2019, 1 a.m. | 32.1 ppb (30) | 8.8 ppb (8) | N/A | 23.0 ppb (21) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 30.0 | |
| March 20, 2019, midnight | 37.1 ppb (34) | 11.5 ppb (11) | N/A | 25.0 ppb (23) | N/A | 2.0 ppb (3) | N/A | N/A | N/A | N/A | 34.0 | |
| March 19, 2019, 11 p.m. | 36.4 ppb (34) | 13.1 ppb (12) | N/A | 23.0 ppb (21) | N/A | 2.0 ppb (3) | N/A | N/A | N/A | N/A | 34.0 | |
| March 19, 2019, 10 p.m. | 43.4 ppb (40) | 17.5 ppb (16) | N/A | 26.0 ppb (24) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 40.0 | |
| March 19, 2019, 9 p.m. | 40.5 ppb (38) | 16.8 ppb (16) | N/A | 24.0 ppb (22) | N/A | 2.0 ppb (3) | N/A | N/A | N/A | N/A | 38.0 | |
| March 19, 2019, 8 p.m. | 40.5 ppb (38) | 18.2 ppb (17) | N/A | 22.0 ppb (20) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 38.0 | |
| March 19, 2019, 7 p.m. | 47.3 ppb (44) | 22.3 ppb (21) | N/A | 25.0 ppb (23) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 44.0 | |
| March 19, 2019, 6 p.m. | 45.1 ppb (42) | 20.7 ppb (19) | N/A | 24.0 ppb (22) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 42.0 | |
| March 19, 2019, 5 p.m. | 38.3 ppb (35) | 18.6 ppb (17) | N/A | 19.0 ppb (18) | N/A | 2.0 ppb (3) | N/A | N/A | N/A | N/A | 35.0 | |
| March 19, 2019, 4 p.m. | 32.8 ppb (30) | 15.9 ppb (15) | N/A | 17.0 ppb (16) | N/A | 2.0 ppb (3) | N/A | N/A | N/A | N/A | 30.0 | |
| March 19, 2019, 3 p.m. | N/A | N/A | N/A | N/A | N/A | 3.0 ppb (4) | N/A | N/A | N/A | N/A | 4.0 | |
| March 19, 2019, 2 p.m. | 55.0 ppb (51) | 29.1 ppb (27) | N/A | 26.0 ppb (24) | N/A | N/A | N/A | N/A | N/A | N/A | 51.0 | |
| March 19, 2019, 1 p.m. | 60.5 ppb (57) | 30.6 ppb (28) | N/A | 30.0 ppb (28) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 57.0 | |
| March 19, 2019, noon | 73.1 ppb (70) | 33.1 ppb (31) | N/A | 40.0 ppb (37) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 70.0 | |
| March 19, 2019, 11 a.m. | 78.2 ppb (76) | 37.1 ppb (34) | N/A | 41.0 ppb (38) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 76.0 | |
| March 19, 2019, 10 a.m. | 49.6 ppb (46) | 18.5 ppb (17) | N/A | 31.0 ppb (29) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 46.0 |