Bridgeton (Natural Bridge Jct) MO, US: 38.75264, -90.44884
| Date Observed (UTC) | NOX | NO | NOY | NO2 | NO2Y | SO2 | OZONE | CO | PM10 | PM2.5 | AQI | AQI/500 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| April 8, 2020, 11 p.m. | 12.6 ppb (12) | 3.1 ppb (3) | N/A | 9.0 ppb (8) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 12.0 | |
| April 8, 2020, 10 p.m. | 14.6 ppb (14) | 5.8 ppb (5) | N/A | 9.0 ppb (8) | N/A | 5.0 ppb (7) | N/A | N/A | N/A | N/A | 14.0 | |
| April 8, 2020, 9 p.m. | 17.1 ppb (16) | 6.4 ppb (6) | N/A | 11.0 ppb (10) | N/A | 5.0 ppb (7) | N/A | N/A | N/A | N/A | 16.0 | |
| April 8, 2020, 8 p.m. | 19.2 ppb (18) | 6.5 ppb (6) | N/A | 13.0 ppb (12) | N/A | 2.0 ppb (3) | N/A | N/A | N/A | N/A | 18.0 | |
| April 8, 2020, 7 p.m. | 22.2 ppb (21) | 7.8 ppb (7) | N/A | 14.0 ppb (13) | N/A | 2.0 ppb (3) | N/A | N/A | N/A | N/A | 21.0 | |
| April 8, 2020, 6 p.m. | 22.3 ppb (21) | 7.6 ppb (7) | N/A | 15.0 ppb (14) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 21.0 | |
| April 8, 2020, 5 p.m. | 20.6 ppb (19) | 6.9 ppb (6) | N/A | 14.0 ppb (13) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 19.0 | |
| April 8, 2020, 4 p.m. | 23.6 ppb (22) | 8.5 ppb (8) | N/A | 15.0 ppb (14) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 22.0 | |
| April 8, 2020, 3 p.m. | 20.6 ppb (19) | 7.9 ppb (7) | N/A | 13.0 ppb (12) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 19.0 | |
| April 8, 2020, 2 p.m. | 13.5 ppb (12) | 5.7 ppb (5) | N/A | 8.0 ppb (7) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 12.0 | |
| April 8, 2020, 1 p.m. | 71.9 ppb (69) | 47.1 ppb (44) | N/A | 25.0 ppb (23) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 69.0 | |
| April 8, 2020, noon | 51.0 ppb (47) | 27.9 ppb (26) | N/A | 23.0 ppb (21) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 47.0 | |
| April 8, 2020, 11 a.m. | 37.0 ppb (34) | 18.3 ppb (17) | N/A | 18.0 ppb (17) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 34.0 | |
| April 8, 2020, 10 a.m. | 9.6 ppb (9) | 1.9 ppb (2) | N/A | 8.0 ppb (7) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 9.0 | |
| April 8, 2020, 9 a.m. | 9.3 ppb (9) | 2.2 ppb (2) | N/A | 7.0 ppb (6) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 9.0 | |
| April 8, 2020, 8 a.m. | 5.2 ppb (5) | 0.8 ppb (1) | N/A | 4.0 ppb (4) | N/A | 2.0 ppb (3) | N/A | N/A | N/A | N/A | 5.0 | |
| April 8, 2020, 7 a.m. | 4.9 ppb (5) | 0.9 ppb (1) | N/A | 4.0 ppb (4) | N/A | 3.0 ppb (4) | N/A | N/A | N/A | N/A | 5.0 | |
| April 8, 2020, 6 a.m. | 9.1 ppb (8) | 2.2 ppb (2) | N/A | 7.0 ppb (6) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 8.0 | |
| April 8, 2020, 5 a.m. | 8.2 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 | |
| April 8, 2020, 4 a.m. | 8.0 ppb (7) | 2.4 ppb (2) | N/A | 6.0 ppb (6) | N/A | 2.0 ppb (3) | N/A | N/A | N/A | N/A | 7.0 | |
| April 8, 2020, 3 a.m. | 9.1 ppb (8) | 2.7 ppb (3) | N/A | 6.0 ppb (6) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 8.0 | |
| April 8, 2020, 2 a.m. | 9.5 ppb (9) | 3.0 ppb (3) | N/A | 6.0 ppb (6) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 9.0 | |
| April 8, 2020, 1 a.m. | 9.2 ppb (9) | 2.5 ppb (2) | N/A | 7.0 ppb (6) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 9.0 | |
| April 8, 2020, midnight | 13.2 ppb (12) | 4.4 ppb (4) | N/A | 9.0 ppb (8) | N/A | 8.0 ppb (11) | N/A | N/A | N/A | N/A | 12.0 | |
| April 7, 2020, 11 p.m. | 12.6 ppb (12) | 5.8 ppb (5) | N/A | 7.0 ppb (6) | N/A | 3.0 ppb (4) | N/A | N/A | N/A | N/A | 12.0 | |
| April 7, 2020, 10 p.m. | 13.3 ppb (12) | 6.1 ppb (6) | N/A | 7.0 ppb (6) | N/A | 2.0 ppb (3) | N/A | N/A | N/A | N/A | 12.0 | |
| April 7, 2020, 9 p.m. | 15.5 ppb (14) | 6.7 ppb (6) | N/A | 9.0 ppb (8) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 14.0 | |
| April 7, 2020, 8 p.m. | 16.8 ppb (16) | 7.9 ppb (7) | N/A | 9.0 ppb (8) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 16.0 | |
| April 7, 2020, 7 p.m. | 16.8 ppb (16) | 8.2 ppb (8) | N/A | 9.0 ppb (8) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 16.0 | |
| April 7, 2020, 6 p.m. | 18.8 ppb (17) | 9.4 ppb (9) | N/A | 9.0 ppb (8) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 17.0 | |
| April 7, 2020, 5 p.m. | 17.1 ppb (16) | 8.4 ppb (8) | N/A | 9.0 ppb (8) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 16.0 | |
| April 7, 2020, 4 p.m. | 19.3 ppb (18) | 10.1 ppb (9) | N/A | 9.0 ppb (8) | N/A | 7.0 ppb (10) | N/A | N/A | N/A | N/A | 18.0 | |
| April 7, 2020, 3 p.m. | 20.8 ppb (19) | 10.3 ppb (10) | N/A | 10.0 ppb (9) | N/A | 4.0 ppb (6) | N/A | N/A | N/A | N/A | 19.0 | |
| April 7, 2020, 2 p.m. | 30.9 ppb (29) | 14.8 ppb (14) | N/A | 16.0 ppb (15) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 29.0 | |
| April 7, 2020, 1 p.m. | 29.0 ppb (27) | 10.6 ppb (10) | N/A | 18.0 ppb (17) | N/A | 2.0 ppb (3) | N/A | N/A | N/A | N/A | 27.0 | |
| April 7, 2020, noon | 29.1 ppb (27) | 10.5 ppb (10) | N/A | 18.0 ppb (17) | N/A | 2.0 ppb (3) | N/A | N/A | N/A | N/A | 27.0 | |
| April 7, 2020, 11 a.m. | 22.8 ppb (21) | 6.6 ppb (6) | N/A | 16.0 ppb (15) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 21.0 | |
| April 7, 2020, 10 a.m. | 12.6 ppb (12) | 5.4 ppb (5) | N/A | 7.0 ppb (6) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 12.0 | |
| April 7, 2020, 9 a.m. | 4.1 ppb (4) | 1.7 ppb (2) | N/A | 2.0 ppb (2) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 4.0 | |
| April 7, 2020, 8 a.m. | 5.0 ppb (5) | 2.0 ppb (2) | N/A | 3.0 ppb (3) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 5.0 | |
| April 7, 2020, 7 a.m. | 3.6 ppb (3) | 1.1 ppb (1) | N/A | 2.0 ppb (2) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 3.0 | |
| April 7, 2020, 6 a.m. | 4.8 ppb (4) | 1.1 ppb (1) | N/A | 4.0 ppb (4) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 4.0 | |
| April 7, 2020, 5 a.m. | 5.3 ppb (5) | 1.6 ppb (1) | N/A | 4.0 ppb (4) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 5.0 | |
| April 7, 2020, 4 a.m. | 11.0 ppb (10) | 3.4 ppb (3) | N/A | 8.0 ppb (7) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 10.0 | |
| April 7, 2020, 3 a.m. | 14.5 ppb (13) | 5.5 ppb (5) | N/A | 9.0 ppb (8) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 13.0 | |
| April 7, 2020, 2 a.m. | 15.6 ppb (14) | 5.5 ppb (5) | N/A | 10.0 ppb (9) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 14.0 | |
| April 7, 2020, 1 a.m. | 19.5 ppb (18) | 5.2 ppb (5) | N/A | 14.0 ppb (13) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 18.0 | |
| April 7, 2020, midnight | 24.7 ppb (23) | 8.5 ppb (8) | N/A | 16.0 ppb (15) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 23.0 | |
| April 6, 2020, 11 p.m. | 13.4 ppb (12) | 6.8 ppb (6) | N/A | 7.0 ppb (6) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 12.0 | |
| April 6, 2020, 10 p.m. | 14.2 ppb (13) | 6.6 ppb (6) | N/A | 8.0 ppb (7) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 13.0 | |
| April 6, 2020, 9 p.m. | 23.0 ppb (21) | 11.0 ppb (10) | N/A | 12.0 ppb (11) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 21.0 | |
| April 6, 2020, 8 p.m. | 25.8 ppb (24) | 12.6 ppb (12) | N/A | 13.0 ppb (12) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 24.0 | |
| April 6, 2020, 7 p.m. | 27.4 ppb (25) | 15.0 ppb (14) | N/A | 12.0 ppb (11) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 25.0 | |
| April 6, 2020, 6 p.m. | 28.9 ppb (27) | 16.1 ppb (15) | N/A | 13.0 ppb (12) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 27.0 | |
| April 6, 2020, 5 p.m. | 33.5 ppb (31) | 19.7 ppb (18) | N/A | 14.0 ppb (13) | N/A | 2.0 ppb (3) | N/A | N/A | N/A | N/A | 31.0 | |
| April 6, 2020, 4 p.m. | 30.6 ppb (28) | 17.5 ppb (16) | N/A | 13.0 ppb (12) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 28.0 | |
| April 6, 2020, 3 p.m. | 32.4 ppb (30) | 19.6 ppb (18) | N/A | 13.0 ppb (12) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 30.0 | |
| April 6, 2020, 2 p.m. | 47.4 ppb (44) | 32.4 ppb (30) | N/A | 15.0 ppb (14) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 44.0 | |
| April 6, 2020, 1 p.m. | 49.3 ppb (46) | 32.2 ppb (30) | N/A | 17.0 ppb (16) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 46.0 | |
| April 6, 2020, noon | 44.7 ppb (41) | 28.1 ppb (26) | N/A | 16.0 ppb (15) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 41.0 | |
| April 6, 2020, 11 a.m. | 43.8 ppb (41) | 28.2 ppb (26) | N/A | 15.0 ppb (14) | N/A | 2.0 ppb (3) | N/A | N/A | N/A | N/A | 41.0 | |
| April 6, 2020, 10 a.m. | 31.1 ppb (29) | 18.4 ppb (17) | N/A | 12.0 ppb (11) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 29.0 | |
| April 6, 2020, 9 a.m. | 20.5 ppb (19) | 8.8 ppb (8) | N/A | 12.0 ppb (11) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 19.0 | |
| April 6, 2020, 8 a.m. | 16.4 ppb (15) | 5.9 ppb (5) | N/A | 10.0 ppb (9) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 15.0 | |
| April 6, 2020, 7 a.m. | 15.8 ppb (15) | 3.1 ppb (3) | N/A | 13.0 ppb (12) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 15.0 | |
| April 6, 2020, 6 a.m. | 16.4 ppb (15) | 3.1 ppb (3) | N/A | 13.0 ppb (12) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 15.0 | |
| April 6, 2020, 5 a.m. | 18.5 ppb (17) | 4.6 ppb (4) | N/A | 14.0 ppb (13) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 17.0 | |
| April 6, 2020, 4 a.m. | 21.2 ppb (20) | 6.9 ppb (6) | N/A | 14.0 ppb (13) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 20.0 | |
| April 6, 2020, 3 a.m. | 22.4 ppb (21) | 8.2 ppb (8) | N/A | 14.0 ppb (13) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 21.0 | |
| April 6, 2020, 2 a.m. | 19.4 ppb (18) | 6.7 ppb (6) | N/A | 13.0 ppb (12) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 18.0 | |
| April 6, 2020, 1 a.m. | 15.1 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 | |
| April 6, 2020, midnight | 16.2 ppb (15) | 5.6 ppb (5) | N/A | 11.0 ppb (10) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 15.0 | |
| April 5, 2020, 11 p.m. | 18.7 ppb (17) | 7.6 ppb (7) | N/A | 11.0 ppb (10) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 17.0 | |
| April 5, 2020, 10 p.m. | 16.0 ppb (15) | 7.3 ppb (7) | N/A | 9.0 ppb (8) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 15.0 | |
| April 5, 2020, 9 p.m. | 15.8 ppb (15) | 7.6 ppb (7) | N/A | 8.0 ppb (7) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 15.0 | |
| April 5, 2020, 8 p.m. | 13.0 ppb (12) | 5.7 ppb (5) | N/A | 7.0 ppb (6) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 12.0 | |
| April 5, 2020, 7 p.m. | 13.1 ppb (12) | 6.4 ppb (6) | N/A | 7.0 ppb (6) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 12.0 | |
| April 5, 2020, 6 p.m. | 7.3 ppb (7) | 3.4 ppb (3) | N/A | 4.0 ppb (4) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 7.0 | |
| April 5, 2020, 5 p.m. | 6.7 ppb (6) | 3.3 ppb (3) | N/A | 3.0 ppb (3) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 6.0 | |
| April 5, 2020, 4 p.m. | 8.7 ppb (8) | 5.2 ppb (5) | N/A | 4.0 ppb (4) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 8.0 | |
| April 5, 2020, 3 p.m. | 2.1 ppb (2) | 0.5 ppb (0) | N/A | 2.0 ppb (2) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 2.0 | |
| April 5, 2020, 2 p.m. | 1.4 ppb (1) | 0.2 ppb (0) | N/A | 1.0 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 1.0 | |
| April 5, 2020, 1 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 | |
| April 5, 2020, noon | 1.6 ppb (1) | 0.0 ppb (0) | N/A | 2.0 ppb (2) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 2.0 | |
| April 5, 2020, 11 a.m. | 1.5 ppb (1) | 0.0 ppb (0) | N/A | 2.0 ppb (2) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 2.0 | |
| April 5, 2020, 10 a.m. | 2.8 ppb (3) | -0.1 ppb (0) | N/A | 3.0 ppb (3) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 3.0 | |
| April 5, 2020, 9 a.m. | 1.7 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 | |
| April 5, 2020, 8 a.m. | 2.8 ppb (3) | -0.1 ppb (0) | N/A | 3.0 ppb (3) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 3.0 | |
| April 5, 2020, 7 a.m. | 5.7 ppb (5) | 1.3 ppb (1) | N/A | 4.0 ppb (4) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 5.0 | |
| April 5, 2020, 6 a.m. | 4.8 ppb (4) | 0.8 ppb (1) | N/A | 4.0 ppb (4) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 4.0 | |
| April 5, 2020, 5 a.m. | 4.7 ppb (4) | 0.7 ppb (1) | N/A | 4.0 ppb (4) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 4.0 | |
| April 5, 2020, 4 a.m. | 2.5 ppb (2) | -0.1 ppb (0) | N/A | 3.0 ppb (3) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 3.0 | |
| April 5, 2020, 3 a.m. | 1.7 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 | |
| April 5, 2020, 2 a.m. | 1.7 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 | |
| April 5, 2020, 1 a.m. | 1.2 ppb (1) | -0.1 ppb (0) | N/A | 1.0 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 1.0 | |
| April 5, 2020, midnight | 1.4 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 | |
| April 4, 2020, 11 p.m. | 0.9 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 1.0 | |
| April 4, 2020, 10 p.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 1.0 | |
| April 4, 2020, 9 p.m. | 1.2 ppb (1) | 0.2 ppb (0) | N/A | 1.0 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 1.0 | |
| April 4, 2020, 8 p.m. | 1.3 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 | |
| April 4, 2020, 7 p.m. | 1.3 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 | |
| April 4, 2020, 6 p.m. | 1.2 ppb (1) | 0.4 ppb (0) | N/A | 1.0 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 1.0 | |
| April 4, 2020, 5 p.m. | 1.0 ppb (1) | 0.4 ppb (0) | N/A | 1.0 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 1.0 | |
| April 4, 2020, 4 p.m. | 0.7 ppb (1) | 0.2 ppb (0) | N/A | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 1.0 | |
| April 4, 2020, 3 p.m. | 1.1 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 | |
| April 4, 2020, 2 p.m. | 0.9 ppb (1) | 0.2 ppb (0) | N/A | 1.0 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 1.0 | |
| April 4, 2020, 1 p.m. | 1.4 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 | |
| April 4, 2020, noon | 1.5 ppb (1) | 0.0 ppb (0) | N/A | 2.0 ppb (2) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 2.0 | |
| April 4, 2020, 11 a.m. | 1.4 ppb (1) | 0.2 ppb (0) | N/A | 1.0 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 1.0 | |
| April 4, 2020, 10 a.m. | 1.1 ppb (1) | -0.1 ppb (0) | N/A | 1.0 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 1.0 | |
| April 4, 2020, 9 a.m. | 1.1 ppb (1) | -0.1 ppb (0) | N/A | 1.0 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 1.0 | |
| April 4, 2020, 8 a.m. | 1.6 ppb (1) | -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 | |
| April 4, 2020, 7 a.m. | 1.4 ppb (1) | -0.1 ppb (0) | N/A | 1.0 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 1.0 | |
| April 4, 2020, 6 a.m. | 1.1 ppb (1) | -0.1 ppb (0) | N/A | 1.0 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 1.0 | |
| April 4, 2020, 5 a.m. | 1.4 ppb (1) | -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 | |
| April 4, 2020, 4 a.m. | 1.7 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 | |
| April 4, 2020, 3 a.m. | 2.0 ppb (2) | 0.0 ppb (0) | N/A | 2.0 ppb (2) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 2.0 | |
| April 4, 2020, 2 a.m. | 2.7 ppb (3) | 0.3 ppb (0) | N/A | 2.0 ppb (2) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 3.0 | |
| April 4, 2020, 1 a.m. | 3.6 ppb (3) | 0.7 ppb (1) | N/A | 3.0 ppb (3) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 3.0 | |
| April 4, 2020, midnight | 10.0 ppb (9) | 3.6 ppb (3) | N/A | 6.0 ppb (6) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 9.0 | |
| April 3, 2020, 11 p.m. | 11.6 ppb (11) | 5.3 ppb (5) | N/A | 6.0 ppb (6) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 11.0 | |
| April 3, 2020, 10 p.m. | 3.0 ppb (3) | 0.7 ppb (1) | N/A | 2.0 ppb (2) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 3.0 | |
| April 3, 2020, 9 p.m. | 18.4 ppb (17) | 6.5 ppb (6) | N/A | 12.0 ppb (11) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 17.0 | |
| April 3, 2020, 8 p.m. | 23.9 ppb (22) | 9.1 ppb (8) | N/A | 15.0 ppb (14) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 22.0 | |
| April 3, 2020, 7 p.m. | 20.7 ppb (19) | 8.1 ppb (8) | N/A | 13.0 ppb (12) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 19.0 | |
| April 3, 2020, 6 p.m. | 20.1 ppb (19) | 8.5 ppb (8) | N/A | 12.0 ppb (11) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 19.0 | |
| April 3, 2020, 5 p.m. | 19.0 ppb (18) | 8.1 ppb (8) | N/A | 11.0 ppb (10) | N/A | 2.0 ppb (3) | N/A | N/A | N/A | N/A | 18.0 | |
| April 3, 2020, 4 p.m. | 23.2 ppb (21) | 9.6 ppb (9) | N/A | 14.0 ppb (13) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 21.0 | |
| April 3, 2020, 3 p.m. | 30.7 ppb (28) | 15.0 ppb (14) | N/A | 16.0 ppb (15) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 28.0 | |
| April 3, 2020, 2 p.m. | 31.9 ppb (30) | 14.7 ppb (14) | N/A | 17.0 ppb (16) | N/A | 2.0 ppb (3) | N/A | N/A | N/A | N/A | 30.0 | |
| April 3, 2020, 1 p.m. | 32.6 ppb (30) | 13.7 ppb (13) | N/A | 19.0 ppb (18) | N/A | 2.0 ppb (3) | N/A | N/A | N/A | N/A | 30.0 | |
| April 3, 2020, noon | 23.1 ppb (21) | 9.7 ppb (9) | N/A | 13.0 ppb (12) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 21.0 | |
| April 3, 2020, 11 a.m. | 27.3 ppb (25) | 11.4 ppb (11) | N/A | 16.0 ppb (15) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 25.0 | |
| April 3, 2020, 10 a.m. | 17.7 ppb (16) | 6.4 ppb (6) | N/A | 11.0 ppb (10) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 16.0 | |
| April 3, 2020, 9 a.m. | 8.6 ppb (8) | 2.0 ppb (2) | N/A | 7.0 ppb (6) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 8.0 | |
| April 3, 2020, 8 a.m. | 12.1 ppb (11) | 2.3 ppb (2) | N/A | 10.0 ppb (9) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 11.0 | |
| April 3, 2020, 7 a.m. | 7.8 ppb (7) | 2.1 ppb (2) | N/A | 6.0 ppb (6) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 7.0 | |
| April 3, 2020, 6 a.m. | 6.6 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 | |
| April 3, 2020, 5 a.m. | 9.3 ppb (9) | 2.6 ppb (2) | N/A | 7.0 ppb (6) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 9.0 | |
| April 3, 2020, 4 a.m. | 10.6 ppb (10) | 3.0 ppb (3) | N/A | 8.0 ppb (7) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 10.0 | |
| April 3, 2020, 3 a.m. | 8.3 ppb (8) | 2.0 ppb (2) | N/A | 6.0 ppb (6) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 8.0 | |
| April 3, 2020, 2 a.m. | 9.7 ppb (9) | 2.6 ppb (2) | N/A | 7.0 ppb (6) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 9.0 | |
| April 3, 2020, 1 a.m. | 9.4 ppb (9) | 2.6 ppb (2) | N/A | 7.0 ppb (6) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 9.0 | |
| April 3, 2020, midnight | 15.9 ppb (15) | 4.7 ppb (4) | N/A | 11.0 ppb (10) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 15.0 | |
| April 2, 2020, 11 p.m. | 16.9 ppb (16) | 5.5 ppb (5) | N/A | 11.0 ppb (10) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 16.0 | |
| April 2, 2020, 10 p.m. | 19.0 ppb (18) | 7.2 ppb (7) | N/A | 12.0 ppb (11) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 18.0 | |
| April 2, 2020, 9 p.m. | 16.9 ppb (16) | 6.4 ppb (6) | N/A | 10.0 ppb (9) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 16.0 | |
| April 2, 2020, 8 p.m. | 17.3 ppb (16) | 7.4 ppb (7) | N/A | 10.0 ppb (9) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 16.0 | |
| April 2, 2020, 7 p.m. | 19.4 ppb (18) | 9.0 ppb (8) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 | |
| April 2, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 1.0 | |
| April 2, 2020, 5 p.m. | 20.3 ppb (19) | 9.8 ppb (9) | N/A | 10.0 ppb (9) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 19.0 | |
| April 2, 2020, 4 p.m. | 23.9 ppb (22) | 12.4 ppb (11) | N/A | 11.0 ppb (10) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 22.0 | |
| April 2, 2020, 3 p.m. | 22.8 ppb (21) | 12.9 ppb (12) | N/A | 10.0 ppb (9) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 21.0 | |
| April 2, 2020, 2 p.m. | 22.6 ppb (21) | 11.6 ppb (11) | N/A | 11.0 ppb (10) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 21.0 | |
| April 2, 2020, 1 p.m. | 29.1 ppb (27) | 13.8 ppb (13) | N/A | 15.0 ppb (14) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 27.0 | |
| April 2, 2020, noon | 26.2 ppb (24) | 11.7 ppb (11) | N/A | 14.0 ppb (13) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 24.0 | |
| April 2, 2020, 11 a.m. | 26.3 ppb (24) | 11.9 ppb (11) | N/A | 14.0 ppb (13) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 24.0 | |
| April 2, 2020, 10 a.m. | 17.0 ppb (16) | 6.7 ppb (6) | N/A | 10.0 ppb (9) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 16.0 | |
| April 2, 2020, 9 a.m. | 9.4 ppb (9) | 3.1 ppb (3) | N/A | 6.0 ppb (6) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 9.0 | |
| April 2, 2020, 8 a.m. | 7.8 ppb (7) | 2.4 ppb (2) | N/A | 5.0 ppb (5) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 7.0 | |
| April 2, 2020, 7 a.m. | 10.8 ppb (10) | 3.2 ppb (3) | N/A | 8.0 ppb (7) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 10.0 | |
| April 2, 2020, 6 a.m. | 10.5 ppb (10) | 2.3 ppb (2) | N/A | 8.0 ppb (7) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 10.0 | |
| April 2, 2020, 5 a.m. | 15.9 ppb (15) | 3.0 ppb (3) | N/A | 13.0 ppb (12) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 15.0 | |
| April 2, 2020, 4 a.m. | 21.0 ppb (19) | 4.4 ppb (4) | N/A | 17.0 ppb (16) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 19.0 | |
| April 2, 2020, 3 a.m. | 24.7 ppb (23) | 6.2 ppb (6) | N/A | 18.0 ppb (17) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 23.0 | |
| April 2, 2020, 2 a.m. | 10.7 ppb (10) | 0.6 ppb (1) | N/A | 10.0 ppb (9) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 10.0 | |
| April 2, 2020, 1 a.m. | 12.1 ppb (11) | 0.7 ppb (1) | N/A | 11.0 ppb (10) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 11.0 | |
| April 2, 2020, midnight | 27.2 ppb (25) | 8.4 ppb (8) | N/A | 19.0 ppb (18) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 25.0 |