Cary NC, US: 35.8652, -78.8197
| Date Observed (UTC) | NOX | NO | NOY | NO2 | NO2Y | SO2 | OZONE | CO | PM10 | PM2.5 | AQI | AQI/500 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| May 21, 2019, 11 p.m. | 1.6 ppb (1) | 0.2 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | 0.17 ppb (2) | N/A | N/A | 2.0 | |
| May 21, 2019, 10 p.m. | 2.4 ppb (2) | 0.4 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.16 ppb (2) | N/A | N/A | 2.0 | |
| May 21, 2019, 9 p.m. | 6.2 ppb (6) | 1.8 ppb (2) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.22 ppb (2) | N/A | N/A | 6.0 | |
| May 21, 2019, 8 p.m. | 16.1 ppb (15) | 5.0 ppb (5) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.37 ppb (4) | N/A | N/A | 15.0 | |
| May 21, 2019, 7 p.m. | 16.1 ppb (15) | 6.7 ppb (6) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.36 ppb (4) | N/A | N/A | 15.0 | |
| May 21, 2019, 6 p.m. | 14.9 ppb (14) | 6.4 ppb (6) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.31 ppb (3) | N/A | N/A | 14.0 | |
| May 21, 2019, 5 p.m. | 17.3 ppb (16) | 8.3 ppb (8) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.3 ppb (3) | N/A | N/A | 16.0 | |
| May 21, 2019, 4 p.m. | 9.5 ppb (9) | 4.3 ppb (4) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.23 ppb (3) | N/A | N/A | 9.0 | |
| May 21, 2019, 3 p.m. | 11.4 ppb (11) | 5.3 ppb (5) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.19 ppb (2) | N/A | N/A | 11.0 | |
| May 21, 2019, 2 p.m. | 7.7 ppb (7) | 3.3 ppb (3) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.18 ppb (2) | N/A | N/A | 7.0 | |
| May 21, 2019, 1 p.m. | 6.1 ppb (6) | 2.5 ppb (2) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.19 ppb (2) | N/A | N/A | 6.0 | |
| May 21, 2019, noon | 7.7 ppb (7) | 2.6 ppb (2) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.23 ppb (3) | N/A | N/A | 7.0 | |
| May 21, 2019, 11 a.m. | 13.7 ppb (13) | 4.9 ppb (5) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.29 ppb (3) | N/A | N/A | 13.0 | |
| May 21, 2019, 10 a.m. | 19.9 ppb (18) | 8.1 ppb (8) | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.34 ppb (4) | N/A | N/A | 18.0 | |
| May 21, 2019, 9 a.m. | 16.8 ppb (16) | 3.8 ppb (4) | N/A | 13.0 ppb (12) | N/A | N/A | N/A | 0.28 ppb (3) | N/A | N/A | 16.0 | |
| May 21, 2019, 8 a.m. | 11.6 ppb (11) | 1.5 ppb (1) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.23 ppb (3) | N/A | N/A | 11.0 | |
| May 21, 2019, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.19 ppb (2) | N/A | N/A | 2.0 | |
| May 21, 2019, 6 a.m. | 12.8 ppb (12) | 3.7 ppb (3) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.19 ppb (2) | N/A | N/A | 12.0 | |
| May 21, 2019, 5 a.m. | 9.5 ppb (9) | 2.6 ppb (2) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 | |
| May 21, 2019, 4 a.m. | 8.8 ppb (8) | 1.8 ppb (2) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.29 ppb (3) | N/A | N/A | 8.0 | |
| May 21, 2019, 3 a.m. | 14.4 ppb (13) | 2.7 ppb (3) | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.32 ppb (4) | N/A | N/A | 13.0 | |
| May 21, 2019, 2 a.m. | 16.3 ppb (15) | 3.8 ppb (4) | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.35 ppb (4) | N/A | N/A | 15.0 | |
| May 21, 2019, 1 a.m. | 15.4 ppb (14) | 3.8 ppb (4) | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.34 ppb (4) | N/A | N/A | 14.0 | |
| May 21, 2019, midnight | 21.5 ppb (20) | 5.4 ppb (5) | N/A | 16.0 ppb (15) | N/A | N/A | N/A | 0.46 ppb (5) | N/A | N/A | 20.0 | |
| May 20, 2019, 11 p.m. | 21.8 ppb (20) | 7.2 ppb (7) | N/A | 15.0 ppb (14) | N/A | N/A | N/A | 0.5 ppb (6) | N/A | N/A | 20.0 | |
| May 20, 2019, 10 p.m. | 17.0 ppb (16) | 6.1 ppb (6) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.42 ppb (5) | N/A | N/A | 16.0 | |
| May 20, 2019, 9 p.m. | 18.4 ppb (17) | 7.8 ppb (7) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.41 ppb (5) | N/A | N/A | 17.0 | |
| May 20, 2019, 8 p.m. | 19.4 ppb (18) | 8.9 ppb (8) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.45 ppb (5) | N/A | N/A | 18.0 | |
| May 20, 2019, 7 p.m. | 18.4 ppb (17) | 9.5 ppb (9) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.37 ppb (4) | N/A | N/A | 17.0 | |
| May 20, 2019, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.38 ppb (4) | N/A | N/A | 4.0 | |
| May 20, 2019, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.34 ppb (4) | N/A | N/A | 4.0 | |
| May 20, 2019, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.36 ppb (4) | N/A | N/A | 4.0 | |
| May 20, 2019, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.32 ppb (4) | N/A | N/A | 4.0 | |
| May 20, 2019, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.3 ppb (3) | N/A | N/A | 3.0 | |
| May 20, 2019, 1 p.m. | 21.5 ppb (20) | 13.2 ppb (12) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.31 ppb (3) | N/A | N/A | 20.0 | |
| May 20, 2019, noon | 22.4 ppb (21) | 13.4 ppb (12) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.34 ppb (4) | N/A | N/A | 21.0 | |
| May 20, 2019, 11 a.m. | 20.8 ppb (19) | 11.9 ppb (11) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.33 ppb (4) | N/A | N/A | 19.0 | |
| May 20, 2019, 10 a.m. | 26.6 ppb (25) | 15.2 ppb (14) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.38 ppb (4) | N/A | N/A | 25.0 | |
| May 20, 2019, 9 a.m. | 18.4 ppb (17) | 8.3 ppb (8) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.27 ppb (3) | N/A | N/A | 17.0 | |
| May 20, 2019, 8 a.m. | 12.2 ppb (11) | 5.5 ppb (5) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.21 ppb (2) | N/A | N/A | 11.0 | |
| May 20, 2019, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.16 ppb (2) | N/A | N/A | 2.0 | |
| May 20, 2019, 6 a.m. | 5.6 ppb (5) | 2.2 ppb (2) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.15 ppb (2) | N/A | N/A | 5.0 | |
| May 20, 2019, 5 a.m. | 4.7 ppb (4) | 1.7 ppb (2) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 | |
| May 20, 2019, 4 a.m. | 5.9 ppb (5) | 1.9 ppb (2) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.22 ppb (2) | N/A | N/A | 5.0 | |
| May 20, 2019, 3 a.m. | 4.9 ppb (5) | 1.4 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.22 ppb (2) | N/A | N/A | 5.0 | |
| May 20, 2019, 2 a.m. | 7.7 ppb (7) | 1.7 ppb (2) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.22 ppb (2) | N/A | N/A | 7.0 | |
| May 20, 2019, 1 a.m. | 11.5 ppb (11) | 2.8 ppb (3) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.32 ppb (4) | N/A | N/A | 11.0 | |
| May 20, 2019, midnight | 14.3 ppb (13) | 3.7 ppb (3) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.41 ppb (5) | N/A | N/A | 13.0 | |
| May 19, 2019, 11 p.m. | 11.0 ppb (10) | 3.1 ppb (3) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | N/A | 10.0 | |
| May 19, 2019, 10 p.m. | 11.8 ppb (11) | 3.6 ppb (3) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.45 ppb (5) | N/A | N/A | 11.0 | |
| May 19, 2019, 9 p.m. | 9.6 ppb (9) | 3.3 ppb (3) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.38 ppb (4) | N/A | N/A | 9.0 | |
| May 19, 2019, 8 p.m. | 9.3 ppb (9) | 3.5 ppb (3) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.39 ppb (4) | N/A | N/A | 9.0 | |
| May 19, 2019, 7 p.m. | 9.7 ppb (9) | 3.6 ppb (3) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.34 ppb (4) | N/A | N/A | 9.0 | |
| May 19, 2019, 6 p.m. | 8.8 ppb (8) | 3.4 ppb (3) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.35 ppb (4) | N/A | N/A | 8.0 | |
| May 19, 2019, 5 p.m. | 9.0 ppb (8) | 3.3 ppb (3) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.36 ppb (4) | N/A | N/A | 8.0 | |
| May 19, 2019, 4 p.m. | 8.5 ppb (8) | 3.4 ppb (3) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.38 ppb (4) | N/A | N/A | 8.0 | |
| May 19, 2019, 3 p.m. | 7.5 ppb (7) | 3.1 ppb (3) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.35 ppb (4) | N/A | N/A | 7.0 | |
| May 19, 2019, 2 p.m. | 7.8 ppb (7) | 3.3 ppb (3) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.34 ppb (4) | N/A | N/A | 7.0 | |
| May 19, 2019, 1 p.m. | 7.3 ppb (7) | 3.0 ppb (3) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.32 ppb (4) | N/A | N/A | 7.0 | |
| May 19, 2019, noon | 8.5 ppb (8) | 3.8 ppb (4) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.31 ppb (3) | N/A | N/A | 8.0 | |
| May 19, 2019, 11 a.m. | 9.0 ppb (8) | 2.6 ppb (2) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.3 ppb (3) | N/A | N/A | 8.0 | |
| May 19, 2019, 10 a.m. | 12.4 ppb (11) | 3.7 ppb (3) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.34 ppb (4) | N/A | N/A | 11.0 | |
| May 19, 2019, 9 a.m. | 7.7 ppb (7) | 1.4 ppb (1) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.34 ppb (4) | N/A | N/A | 7.0 | |
| May 19, 2019, 8 a.m. | 8.7 ppb (8) | 1.3 ppb (1) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.25 ppb (3) | N/A | N/A | 8.0 | |
| May 19, 2019, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.21 ppb (2) | N/A | N/A | 2.0 | |
| May 19, 2019, 6 a.m. | 5.9 ppb (5) | 0.8 ppb (1) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.24 ppb (3) | N/A | N/A | 5.0 | |
| May 19, 2019, 5 a.m. | 8.8 ppb (8) | 0.8 ppb (1) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | N/A | N/A | N/A | 8.0 | |
| May 19, 2019, 4 a.m. | 11.5 ppb (11) | 1.3 ppb (1) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.37 ppb (4) | N/A | N/A | 11.0 | |
| May 19, 2019, 3 a.m. | 11.7 ppb (11) | 0.7 ppb (1) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.42 ppb (5) | N/A | N/A | 11.0 | |
| May 19, 2019, 2 a.m. | 14.3 ppb (13) | 2.3 ppb (2) | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.38 ppb (4) | N/A | N/A | 13.0 | |
| May 19, 2019, 1 a.m. | 5.5 ppb (5) | 0.6 ppb (1) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.3 ppb (3) | N/A | N/A | 5.0 | |
| May 19, 2019, midnight | 2.2 ppb (2) | 0.1 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.23 ppb (3) | N/A | N/A | 3.0 | |
| May 18, 2019, 11 p.m. | 4.7 ppb (4) | 0.8 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.27 ppb (3) | N/A | N/A | 4.0 | |
| May 18, 2019, 10 p.m. | 14.2 ppb (13) | 3.5 ppb (3) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.47 ppb (5) | N/A | N/A | 13.0 | |
| May 18, 2019, 9 p.m. | 13.9 ppb (13) | 4.6 ppb (4) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.47 ppb (5) | N/A | N/A | 13.0 | |
| May 18, 2019, 8 p.m. | 12.4 ppb (11) | 3.6 ppb (3) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.42 ppb (5) | N/A | N/A | 11.0 | |
| May 18, 2019, 7 p.m. | 9.1 ppb (8) | 2.7 ppb (3) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.34 ppb (4) | N/A | N/A | 8.0 | |
| May 18, 2019, 6 p.m. | 10.7 ppb (10) | 3.4 ppb (3) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.39 ppb (4) | N/A | N/A | 10.0 | |
| May 18, 2019, 5 p.m. | 2.0 ppb (2) | 0.5 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | 0.22 ppb (2) | N/A | N/A | 2.0 | |
| May 18, 2019, 4 p.m. | 5.4 ppb (5) | 1.7 ppb (2) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.3 ppb (3) | N/A | N/A | 5.0 | |
| May 18, 2019, 3 p.m. | 7.3 ppb (7) | 2.2 ppb (2) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.38 ppb (4) | N/A | N/A | 7.0 | |
| May 18, 2019, 2 p.m. | 6.4 ppb (6) | 1.9 ppb (2) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.32 ppb (4) | N/A | N/A | 6.0 | |
| May 18, 2019, 1 p.m. | 12.0 ppb (11) | 3.5 ppb (3) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.35 ppb (4) | N/A | N/A | 11.0 | |
| May 18, 2019, noon | 14.9 ppb (14) | 4.9 ppb (5) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.41 ppb (5) | N/A | N/A | 14.0 | |
| May 18, 2019, 11 a.m. | 29.1 ppb (27) | 19.5 ppb (18) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.53 ppb (6) | N/A | N/A | 27.0 | |
| May 18, 2019, 10 a.m. | 30.1 ppb (28) | 22.3 ppb (21) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.45 ppb (5) | N/A | N/A | 28.0 | |
| May 18, 2019, 9 a.m. | 12.3 ppb (11) | 2.6 ppb (2) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.37 ppb (4) | N/A | N/A | 11.0 | |
| May 18, 2019, 8 a.m. | 8.2 ppb (8) | 0.7 ppb (1) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.32 ppb (4) | N/A | N/A | 8.0 | |
| May 18, 2019, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.41 ppb (5) | N/A | N/A | 5.0 | |
| May 18, 2019, 6 a.m. | 26.4 ppb (24) | 6.0 ppb (6) | N/A | 20.0 ppb (19) | N/A | N/A | N/A | 0.59 ppb (7) | N/A | N/A | 24.0 | |
| May 18, 2019, 5 a.m. | 18.7 ppb (17) | 2.6 ppb (2) | N/A | 16.0 ppb (15) | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 | |
| May 18, 2019, 4 a.m. | 10.9 ppb (10) | 1.1 ppb (1) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.38 ppb (4) | N/A | N/A | 10.0 | |
| May 18, 2019, 3 a.m. | 13.5 ppb (12) | 0.8 ppb (1) | N/A | 13.0 ppb (12) | N/A | N/A | N/A | 0.42 ppb (5) | N/A | N/A | 12.0 | |
| May 18, 2019, 2 a.m. | 16.3 ppb (15) | 2.1 ppb (2) | N/A | 14.0 ppb (13) | N/A | N/A | N/A | 0.42 ppb (5) | N/A | N/A | 15.0 | |
| May 18, 2019, 1 a.m. | 6.8 ppb (6) | 0.5 ppb (0) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.28 ppb (3) | N/A | N/A | 6.0 | |
| May 18, 2019, midnight | 19.8 ppb (18) | 3.3 ppb (3) | N/A | 16.0 ppb (15) | N/A | N/A | N/A | 0.51 ppb (6) | N/A | N/A | 18.0 | |
| May 17, 2019, 11 p.m. | 24.5 ppb (23) | 5.3 ppb (5) | N/A | 19.0 ppb (18) | N/A | N/A | N/A | 0.62 ppb (7) | N/A | N/A | 23.0 | |
| May 17, 2019, 10 p.m. | 19.9 ppb (18) | 5.8 ppb (5) | N/A | 14.0 ppb (13) | N/A | N/A | N/A | 0.53 ppb (6) | N/A | N/A | 18.0 | |
| May 17, 2019, 9 p.m. | 16.4 ppb (15) | 6.3 ppb (6) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | N/A | 15.0 | |
| May 17, 2019, 8 p.m. | 16.0 ppb (15) | 6.5 ppb (6) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.41 ppb (5) | N/A | N/A | 15.0 | |
| May 17, 2019, 7 p.m. | 18.4 ppb (17) | 8.7 ppb (8) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.42 ppb (5) | N/A | N/A | 17.0 | |
| May 17, 2019, 6 p.m. | 17.7 ppb (16) | 8.2 ppb (8) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.42 ppb (5) | N/A | N/A | 16.0 | |
| May 17, 2019, 5 p.m. | 19.8 ppb (18) | 9.2 ppb (9) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.39 ppb (4) | N/A | N/A | 18.0 | |
| May 17, 2019, 4 p.m. | 25.0 ppb (23) | 12.3 ppb (11) | N/A | 13.0 ppb (12) | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 | |
| May 17, 2019, 3 p.m. | 29.3 ppb (27) | 13.4 ppb (12) | N/A | 16.0 ppb (15) | N/A | N/A | N/A | N/A | N/A | N/A | 27.0 | |
| May 17, 2019, 2 p.m. | 31.9 ppb (30) | 17.2 ppb (16) | N/A | 15.0 ppb (14) | N/A | N/A | N/A | 0.45 ppb (5) | N/A | N/A | 30.0 | |
| May 17, 2019, 1 p.m. | 32.3 ppb (30) | 17.8 ppb (16) | N/A | 14.0 ppb (13) | N/A | N/A | N/A | 0.45 ppb (5) | N/A | N/A | 30.0 | |
| May 17, 2019, noon | 30.3 ppb (28) | 16.6 ppb (15) | N/A | 14.0 ppb (13) | N/A | N/A | N/A | 0.46 ppb (5) | N/A | N/A | 28.0 | |
| May 17, 2019, 11 a.m. | 42.9 ppb (40) | 25.2 ppb (23) | N/A | 18.0 ppb (17) | N/A | N/A | N/A | 0.53 ppb (6) | N/A | N/A | 40.0 | |
| May 17, 2019, 10 a.m. | 42.6 ppb (39) | 22.2 ppb (21) | N/A | 20.0 ppb (19) | N/A | N/A | N/A | 0.52 ppb (6) | N/A | N/A | 39.0 | |
| May 17, 2019, 9 a.m. | 25.3 ppb (23) | 10.4 ppb (10) | N/A | 15.0 ppb (14) | N/A | N/A | N/A | 0.39 ppb (4) | N/A | N/A | 23.0 | |
| May 17, 2019, 8 a.m. | 6.2 ppb (6) | 0.5 ppb (0) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.25 ppb (3) | N/A | N/A | 6.0 | |
| May 17, 2019, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.26 ppb (3) | N/A | N/A | 3.0 | |
| May 17, 2019, 6 a.m. | 12.0 ppb (11) | 0.5 ppb (0) | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.32 ppb (4) | N/A | N/A | 11.0 | |
| May 17, 2019, 5 a.m. | 24.9 ppb (23) | 3.8 ppb (4) | N/A | 21.0 ppb (19) | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 | |
| May 17, 2019, 4 a.m. | 26.5 ppb (25) | 3.0 ppb (3) | N/A | 24.0 ppb (22) | N/A | N/A | N/A | 0.49 ppb (5) | N/A | N/A | 25.0 | |
| May 17, 2019, 3 a.m. | 23.3 ppb (22) | 1.6 ppb (1) | N/A | 22.0 ppb (20) | N/A | N/A | N/A | 0.43 ppb (5) | N/A | N/A | 22.0 | |
| May 17, 2019, 2 a.m. | 20.8 ppb (19) | 1.0 ppb (1) | N/A | 20.0 ppb (19) | N/A | N/A | N/A | 0.39 ppb (4) | N/A | N/A | 19.0 | |
| May 17, 2019, 1 a.m. | 11.5 ppb (11) | 0.4 ppb (0) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.3 ppb (3) | N/A | N/A | 11.0 | |
| May 17, 2019, midnight | 4.1 ppb (4) | 0.2 ppb (0) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.23 ppb (3) | N/A | N/A | 4.0 | |
| May 16, 2019, 11 p.m. | 23.0 ppb (21) | 6.9 ppb (6) | N/A | 16.0 ppb (15) | N/A | N/A | N/A | 0.5 ppb (6) | N/A | N/A | 21.0 | |
| May 16, 2019, 10 p.m. | 21.1 ppb (20) | 7.4 ppb (7) | N/A | 14.0 ppb (13) | N/A | N/A | N/A | 0.43 ppb (5) | N/A | N/A | 20.0 | |
| May 16, 2019, 9 p.m. | 18.6 ppb (17) | 6.8 ppb (6) | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.37 ppb (4) | N/A | N/A | 17.0 | |
| May 16, 2019, 8 p.m. | 19.9 ppb (18) | 8.2 ppb (8) | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.35 ppb (4) | N/A | N/A | 18.0 | |
| May 16, 2019, 7 p.m. | 18.4 ppb (17) | 8.1 ppb (8) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.34 ppb (4) | N/A | N/A | 17.0 | |
| May 16, 2019, 6 p.m. | 22.9 ppb (21) | 10.1 ppb (9) | N/A | 13.0 ppb (12) | N/A | N/A | N/A | 0.38 ppb (4) | N/A | N/A | 21.0 | |
| May 16, 2019, 5 p.m. | 23.8 ppb (22) | 11.3 ppb (10) | N/A | 13.0 ppb (12) | N/A | N/A | N/A | 0.34 ppb (4) | N/A | N/A | 22.0 | |
| May 16, 2019, 4 p.m. | 24.1 ppb (22) | 11.6 ppb (11) | N/A | 13.0 ppb (12) | N/A | N/A | N/A | 0.34 ppb (4) | N/A | N/A | 22.0 | |
| May 16, 2019, 3 p.m. | 24.7 ppb (23) | 11.5 ppb (11) | N/A | 13.0 ppb (12) | N/A | N/A | N/A | 0.39 ppb (4) | N/A | N/A | 23.0 | |
| May 16, 2019, 2 p.m. | 21.2 ppb (20) | 9.0 ppb (8) | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.31 ppb (3) | N/A | N/A | 20.0 | |
| May 16, 2019, 1 p.m. | 28.1 ppb (26) | 14.9 ppb (14) | N/A | 13.0 ppb (12) | N/A | N/A | N/A | 0.33 ppb (4) | N/A | N/A | 26.0 | |
| May 16, 2019, noon | 29.1 ppb (27) | 15.7 ppb (15) | N/A | 13.0 ppb (12) | N/A | N/A | N/A | 0.43 ppb (5) | N/A | N/A | 27.0 | |
| May 16, 2019, 11 a.m. | 46.0 ppb (43) | 29.4 ppb (27) | N/A | 17.0 ppb (16) | N/A | N/A | N/A | 0.58 ppb (6) | N/A | N/A | 43.0 | |
| May 16, 2019, 10 a.m. | 59.9 ppb (56) | 41.0 ppb (38) | N/A | 19.0 ppb (18) | N/A | N/A | N/A | 0.63 ppb (7) | N/A | N/A | 56.0 | |
| May 16, 2019, 9 a.m. | 28.7 ppb (27) | 11.0 ppb (10) | N/A | 18.0 ppb (17) | N/A | N/A | N/A | 0.35 ppb (4) | N/A | N/A | 27.0 | |
| May 16, 2019, 8 a.m. | 20.7 ppb (19) | 4.5 ppb (4) | N/A | 16.0 ppb (15) | N/A | N/A | N/A | 0.27 ppb (3) | N/A | N/A | 19.0 | |
| May 16, 2019, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.23 ppb (3) | N/A | N/A | 3.0 | |
| May 16, 2019, 6 a.m. | 7.9 ppb (7) | 0.3 ppb (0) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.22 ppb (2) | N/A | N/A | 7.0 | |
| May 16, 2019, 5 a.m. | 8.9 ppb (8) | 0.3 ppb (0) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | N/A | N/A | N/A | 8.0 | |
| May 16, 2019, 4 a.m. | 11.8 ppb (11) | 0.3 ppb (0) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.28 ppb (3) | N/A | N/A | 11.0 | |
| May 16, 2019, 3 a.m. | 11.9 ppb (11) | 0.3 ppb (0) | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.28 ppb (3) | N/A | N/A | 11.0 | |
| May 16, 2019, 2 a.m. | 17.4 ppb (16) | 1.4 ppb (1) | N/A | 16.0 ppb (15) | N/A | N/A | N/A | 0.31 ppb (3) | N/A | N/A | 16.0 | |
| May 16, 2019, 1 a.m. | 9.9 ppb (9) | 0.3 ppb (0) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.24 ppb (3) | N/A | N/A | 9.0 | |
| May 16, 2019, midnight | 13.2 ppb (12) | 3.0 ppb (3) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.3 ppb (3) | N/A | N/A | 12.0 | |
| May 15, 2019, 11 p.m. | 24.3 ppb (23) | 9.1 ppb (8) | N/A | 15.0 ppb (14) | N/A | N/A | N/A | 0.43 ppb (5) | N/A | N/A | 23.0 | |
| May 15, 2019, 10 p.m. | 21.3 ppb (20) | 8.9 ppb (8) | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.37 ppb (4) | N/A | N/A | 20.0 | |
| May 15, 2019, 9 p.m. | 19.7 ppb (18) | 8.9 ppb (8) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.32 ppb (4) | N/A | N/A | 18.0 | |
| May 15, 2019, 8 p.m. | 19.4 ppb (18) | 9.3 ppb (9) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.32 ppb (4) | N/A | N/A | 18.0 | |
| May 15, 2019, 7 p.m. | 20.6 ppb (19) | 10.7 ppb (10) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.29 ppb (3) | N/A | N/A | 19.0 | |
| May 15, 2019, 6 p.m. | 17.5 ppb (16) | 8.3 ppb (8) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.28 ppb (3) | N/A | N/A | 16.0 | |
| May 15, 2019, 5 p.m. | 19.6 ppb (18) | 9.6 ppb (9) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.29 ppb (3) | N/A | N/A | 18.0 | |
| May 15, 2019, 4 p.m. | 27.1 ppb (25) | 14.0 ppb (13) | N/A | 13.0 ppb (12) | N/A | N/A | N/A | 0.35 ppb (4) | N/A | N/A | 25.0 | |
| May 15, 2019, 3 p.m. | 14.9 ppb (14) | 7.7 ppb (7) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.21 ppb (2) | N/A | N/A | 14.0 | |
| May 15, 2019, 2 p.m. | 11.7 ppb (11) | 5.4 ppb (5) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.2 ppb (2) | N/A | N/A | 11.0 | |
| May 15, 2019, 1 p.m. | 20.0 ppb (19) | 9.9 ppb (9) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.28 ppb (3) | N/A | N/A | 19.0 | |
| May 15, 2019, noon | 36.7 ppb (34) | 20.3 ppb (19) | N/A | 16.0 ppb (15) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | N/A | 34.0 | |
| May 15, 2019, 11 a.m. | 45.6 ppb (42) | 35.0 ppb (32) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.5 ppb (6) | N/A | N/A | 42.0 | |
| May 15, 2019, 10 a.m. | 51.8 ppb (48) | 41.9 ppb (39) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.51 ppb (6) | N/A | N/A | 48.0 | |
| May 15, 2019, 9 a.m. | 27.7 ppb (26) | 17.0 ppb (16) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.32 ppb (4) | N/A | N/A | 26.0 | |
| May 15, 2019, 8 a.m. | 29.5 ppb (27) | 16.1 ppb (15) | N/A | 13.0 ppb (12) | N/A | N/A | N/A | 0.3 ppb (3) | N/A | N/A | 27.0 | |
| May 15, 2019, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.26 ppb (3) | N/A | N/A | 3.0 | |
| May 15, 2019, 6 a.m. | 9.8 ppb (9) | 0.8 ppb (1) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.18 ppb (2) | N/A | N/A | 9.0 | |
| May 15, 2019, 5 a.m. | 12.4 ppb (11) | 0.3 ppb (0) | N/A | 12.0 ppb (11) | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 | |
| May 15, 2019, 4 a.m. | 10.8 ppb (10) | 0.8 ppb (1) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.2 ppb (2) | N/A | N/A | 10.0 | |
| May 15, 2019, 3 a.m. | 14.8 ppb (14) | 2.2 ppb (2) | N/A | 13.0 ppb (12) | N/A | N/A | N/A | 0.25 ppb (3) | N/A | N/A | 14.0 | |
| May 15, 2019, 2 a.m. | 6.8 ppb (6) | 0.1 ppb (0) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.19 ppb (2) | N/A | N/A | 6.0 | |
| May 15, 2019, 1 a.m. | 4.7 ppb (4) | 0.3 ppb (0) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.18 ppb (2) | N/A | N/A | 4.0 | |
| May 15, 2019, midnight | 2.0 ppb (2) | 0.1 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | 0.14 ppb (2) | N/A | N/A | 2.0 |