None None, None: None, None
| Date Observed (UTC) | NOX | NO | NOY | NO2 | NO2Y | SO2 | OZONE | CO | PM10 | PM2.5 | AQI | AQI/500 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| May 21, 2019, 10 a.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 | |
| May 21, 2019, 9 a.m. | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (3) | N/A | N/A | N/A | N/A | 3.0 | |
| May 21, 2019, 8 a.m. | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (3) | N/A | N/A | N/A | N/A | 3.0 | |
| May 21, 2019, 7 a.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 | |
| May 21, 2019, 6 a.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 | |
| May 21, 2019, 5 a.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 | |
| May 21, 2019, 4 a.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 | |
| May 21, 2019, 3 a.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 | |
| May 21, 2019, 2 a.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 | |
| May 21, 2019, 1 a.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 | |
| May 21, 2019, midnight | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 1.0 | |
| May 20, 2019, 11 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 | |
| May 20, 2019, 10 p.m. | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (3) | N/A | N/A | N/A | N/A | 3.0 | |
| May 20, 2019, 9 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 | |
| May 20, 2019, 8 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 | |
| May 20, 2019, 7 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 | |
| May 20, 2019, 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 | |
| May 20, 2019, 5 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 | |
| May 20, 2019, 4 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 | |
| May 20, 2019, 3 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 | |
| May 20, 2019, 2 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 | |
| May 20, 2019, 1 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 | |
| May 20, 2019, noon | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 1.0 | |
| May 20, 2019, 11 a.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 | |
| May 20, 2019, 10 a.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 | |
| May 20, 2019, 9 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | |
| May 20, 2019, 8 a.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 | |
| May 20, 2019, 7 a.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 | |
| May 20, 2019, 6 a.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 | |
| May 20, 2019, 5 a.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 | |
| May 20, 2019, 4 a.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 | |
| May 20, 2019, 3 a.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 | |
| May 20, 2019, 2 a.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 | |
| May 20, 2019, 1 a.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 | |
| May 20, 2019, midnight | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 1.0 | |
| May 19, 2019, 11 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 | |
| May 19, 2019, 10 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 | |
| May 19, 2019, 9 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 | |
| May 19, 2019, 8 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 | |
| May 19, 2019, 7 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 | |
| May 19, 2019, 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 | |
| May 19, 2019, 5 p.m. | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (3) | N/A | N/A | N/A | N/A | 3.0 | |
| May 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 | |
| May 19, 2019, 2 p.m. | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (3) | N/A | N/A | N/A | N/A | 3.0 | |
| May 19, 2019, 1 p.m. | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (3) | N/A | N/A | N/A | N/A | 3.0 | |
| May 19, 2019, noon | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (3) | N/A | N/A | N/A | N/A | 3.0 | |
| May 19, 2019, 11 a.m. | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (3) | N/A | N/A | N/A | N/A | 3.0 | |
| May 19, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (3) | N/A | N/A | N/A | N/A | 3.0 | |
| May 19, 2019, 9 a.m. | N/A | N/A | N/A | N/A | N/A | 5.0 ppb (7) | N/A | N/A | N/A | N/A | 7.0 | |
| May 19, 2019, 8 a.m. | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (3) | N/A | N/A | N/A | N/A | 3.0 | |
| May 19, 2019, 7 a.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 | |
| May 19, 2019, 6 a.m. | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (3) | N/A | N/A | N/A | N/A | 3.0 | |
| May 19, 2019, 5 a.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 | |
| May 19, 2019, 4 a.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 | |
| May 19, 2019, 3 a.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 | |
| May 19, 2019, 2 a.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 | |
| May 19, 2019, 1 a.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 | |
| May 19, 2019, midnight | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 1.0 | |
| May 18, 2019, 11 p.m. | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (3) | N/A | N/A | N/A | N/A | 3.0 | |
| May 18, 2019, 10 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 | |
| May 18, 2019, 9 p.m. | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (3) | N/A | N/A | N/A | N/A | 3.0 | |
| May 18, 2019, 8 p.m. | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (3) | N/A | N/A | N/A | N/A | 3.0 | |
| May 18, 2019, 7 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 | |
| May 18, 2019, 6 p.m. | N/A | N/A | N/A | N/A | N/A | 7.0 ppb (10) | N/A | N/A | N/A | N/A | 10.0 | |
| May 18, 2019, 5 p.m. | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (3) | N/A | N/A | N/A | N/A | 3.0 | |
| May 18, 2019, 3 p.m. | N/A | N/A | N/A | N/A | N/A | 6.0 ppb (9) | N/A | N/A | N/A | N/A | 9.0 | |
| May 18, 2019, 2 p.m. | N/A | N/A | N/A | N/A | N/A | 23.0 ppb (33) | N/A | N/A | N/A | N/A | 33.0 | |
| May 18, 2019, 1 p.m. | N/A | N/A | N/A | N/A | N/A | 27.0 ppb (39) | N/A | N/A | N/A | N/A | 39.0 | |
| May 18, 2019, noon | N/A | N/A | N/A | N/A | N/A | 51.0 ppb (57) | N/A | N/A | N/A | N/A | 57.0 | |
| May 18, 2019, 11 a.m. | N/A | N/A | N/A | N/A | N/A | 52.0 ppb (58) | N/A | N/A | N/A | N/A | 58.0 | |
| May 18, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (54) | N/A | N/A | N/A | N/A | 54.0 | |
| May 18, 2019, 9 a.m. | N/A | N/A | N/A | N/A | N/A | 12.0 ppb (17) | N/A | N/A | N/A | N/A | 17.0 | |
| May 18, 2019, 8 a.m. | N/A | N/A | N/A | N/A | N/A | 9.0 ppb (13) | N/A | N/A | N/A | N/A | 13.0 | |
| May 18, 2019, 7 a.m. | N/A | N/A | N/A | N/A | N/A | 30.0 ppb (43) | N/A | N/A | N/A | N/A | 43.0 | |
| May 18, 2019, 6 a.m. | N/A | N/A | N/A | N/A | N/A | 6.0 ppb (9) | N/A | N/A | N/A | N/A | 9.0 | |
| May 18, 2019, 5 a.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 | |
| May 18, 2019, 4 a.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 | |
| May 18, 2019, 3 a.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 | |
| May 18, 2019, 2 a.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 | |
| May 18, 2019, 1 a.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 | |
| May 18, 2019, midnight | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 1.0 | |
| May 17, 2019, 11 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 | |
| May 17, 2019, 10 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 | |
| May 17, 2019, 9 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 | |
| May 17, 2019, 8 p.m. | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (3) | N/A | N/A | N/A | N/A | 3.0 | |
| May 17, 2019, 7 p.m. | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (3) | N/A | N/A | N/A | N/A | 3.0 | |
| May 17, 2019, 6 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 | |
| May 17, 2019, 5 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 | |
| May 17, 2019, 4 p.m. | N/A | N/A | N/A | N/A | N/A | 6.0 ppb (9) | N/A | N/A | N/A | N/A | 9.0 | |
| May 17, 2019, 3 p.m. | N/A | N/A | N/A | N/A | N/A | 45.0 ppb (55) | N/A | N/A | N/A | N/A | 55.0 | |
| May 17, 2019, 2 p.m. | N/A | N/A | N/A | N/A | N/A | 50.0 ppb (57) | N/A | N/A | N/A | N/A | 57.0 | |
| May 17, 2019, 1 p.m. | N/A | N/A | N/A | N/A | N/A | 28.0 ppb (40) | N/A | N/A | N/A | N/A | 40.0 | |
| May 17, 2019, noon | N/A | N/A | N/A | N/A | N/A | 16.0 ppb (23) | N/A | N/A | N/A | N/A | 23.0 | |
| May 17, 2019, 11 a.m. | N/A | N/A | N/A | N/A | N/A | 19.0 ppb (27) | N/A | N/A | N/A | N/A | 27.0 | |
| May 17, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | 177.0 ppb (120) | N/A | N/A | N/A | N/A | 120.0 | |
| May 17, 2019, 9 a.m. | N/A | N/A | N/A | N/A | N/A | 385.0 ppb (227) | N/A | N/A | N/A | N/A | 227.0 | |
| May 17, 2019, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| May 17, 2019, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| May 17, 2019, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| May 17, 2019, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| May 17, 2019, 4 a.m. | N/A | N/A | N/A | N/A | N/A | 123.0 ppb (90) | N/A | N/A | N/A | N/A | 90.0 | |
| May 17, 2019, 3 a.m. | N/A | N/A | N/A | N/A | N/A | 184.0 ppb (124) | N/A | N/A | N/A | N/A | 124.0 | |
| May 17, 2019, 2 a.m. | N/A | N/A | N/A | N/A | N/A | 115.0 ppb (86) | N/A | N/A | N/A | N/A | 86.0 | |
| May 17, 2019, 1 a.m. | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (51) | N/A | N/A | N/A | N/A | 51.0 | |
| May 17, 2019, midnight | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| May 16, 2019, 11 p.m. | N/A | N/A | N/A | N/A | N/A | 191.0 ppb (129) | N/A | N/A | N/A | N/A | 129.0 | |
| May 16, 2019, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| May 16, 2019, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| May 16, 2019, 8 p.m. | N/A | N/A | N/A | N/A | N/A | 68.0 ppb (65) | N/A | N/A | N/A | N/A | 65.0 | |
| May 16, 2019, 7 p.m. | N/A | N/A | N/A | N/A | N/A | 34.0 ppb (49) | N/A | N/A | N/A | N/A | 49.0 | |
| May 16, 2019, 6 p.m. | N/A | N/A | N/A | N/A | N/A | 29.0 ppb (41) | N/A | N/A | N/A | N/A | 41.0 | |
| May 16, 2019, 5 p.m. | N/A | N/A | N/A | N/A | N/A | 106.0 ppb (82) | N/A | N/A | N/A | N/A | 82.0 | |
| May 16, 2019, 4 p.m. | N/A | N/A | N/A | N/A | N/A | 93.0 ppb (76) | N/A | N/A | N/A | N/A | 76.0 | |
| May 16, 2019, 3 p.m. | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (50) | N/A | N/A | N/A | N/A | 50.0 | |
| May 16, 2019, 2 p.m. | N/A | N/A | N/A | N/A | N/A | 65.0 ppb (64) | N/A | N/A | N/A | N/A | 64.0 | |
| May 16, 2019, 1 p.m. | N/A | N/A | N/A | N/A | N/A | 152.0 ppb (104) | N/A | N/A | N/A | N/A | 104.0 | |
| May 16, 2019, noon | N/A | N/A | N/A | N/A | N/A | 92.0 ppb (76) | N/A | N/A | N/A | N/A | 76.0 | |
| May 16, 2019, 11 a.m. | N/A | N/A | N/A | N/A | N/A | 58.0 ppb (60) | N/A | N/A | N/A | N/A | 60.0 | |
| May 16, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| May 16, 2019, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| May 16, 2019, 8 a.m. | N/A | N/A | N/A | N/A | N/A | 175.0 ppb (119) | N/A | N/A | N/A | N/A | 119.0 | |
| May 16, 2019, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| May 16, 2019, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| May 16, 2019, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| May 16, 2019, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| May 16, 2019, 3 a.m. | N/A | N/A | N/A | N/A | N/A | 97.0 ppb (78) | N/A | N/A | N/A | N/A | 78.0 | |
| May 16, 2019, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| May 16, 2019, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| May 16, 2019, midnight | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| May 15, 2019, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| May 15, 2019, 10 p.m. | N/A | N/A | N/A | N/A | N/A | 135.0 ppb (95) | N/A | N/A | N/A | N/A | 95.0 | |
| May 15, 2019, 9 p.m. | N/A | N/A | N/A | N/A | N/A | 64.0 ppb (63) | N/A | N/A | N/A | N/A | 63.0 | |
| May 15, 2019, 8 p.m. | N/A | N/A | N/A | N/A | N/A | 51.0 ppb (57) | N/A | N/A | N/A | N/A | 57.0 | |
| May 15, 2019, 7 p.m. | N/A | N/A | N/A | N/A | N/A | 13.0 ppb (19) | N/A | N/A | N/A | N/A | 19.0 | |
| May 15, 2019, 6 p.m. | N/A | N/A | N/A | N/A | N/A | 11.0 ppb (16) | N/A | N/A | N/A | N/A | 16.0 | |
| May 15, 2019, 5 p.m. | N/A | N/A | N/A | N/A | N/A | 20.0 ppb (29) | N/A | N/A | N/A | N/A | 29.0 | |
| May 15, 2019, 4 p.m. | N/A | N/A | N/A | N/A | N/A | 20.0 ppb (29) | N/A | N/A | N/A | N/A | 29.0 | |
| May 15, 2019, 3 p.m. | N/A | N/A | N/A | N/A | N/A | 18.0 ppb (26) | N/A | N/A | N/A | N/A | 26.0 | |
| May 15, 2019, 2 p.m. | N/A | N/A | N/A | N/A | N/A | 23.0 ppb (33) | N/A | N/A | N/A | N/A | 33.0 | |
| May 15, 2019, 1 p.m. | N/A | N/A | N/A | N/A | N/A | 60.0 ppb (61) | N/A | N/A | N/A | N/A | 61.0 | |
| May 15, 2019, noon | N/A | N/A | N/A | N/A | N/A | 157.0 ppb (108) | N/A | N/A | N/A | N/A | 108.0 | |
| May 15, 2019, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| May 15, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| May 15, 2019, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| May 15, 2019, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| May 15, 2019, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| May 15, 2019, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| May 15, 2019, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| May 15, 2019, 4 a.m. | N/A | N/A | N/A | N/A | N/A | 141.0 ppb (98) | N/A | N/A | N/A | N/A | 98.0 | |
| May 15, 2019, 3 a.m. | N/A | N/A | N/A | N/A | N/A | 55.0 ppb (59) | N/A | N/A | N/A | N/A | 59.0 | |
| May 15, 2019, 2 a.m. | N/A | N/A | N/A | N/A | N/A | 138.0 ppb (97) | N/A | N/A | N/A | N/A | 97.0 | |
| May 15, 2019, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| May 15, 2019, midnight | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| May 14, 2019, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| May 14, 2019, 10 p.m. | N/A | N/A | N/A | N/A | N/A | 121.0 ppb (89) | N/A | N/A | N/A | N/A | 89.0 | |
| May 14, 2019, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| May 14, 2019, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| May 14, 2019, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| May 14, 2019, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| May 14, 2019, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| May 14, 2019, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| May 14, 2019, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| May 14, 2019, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| May 14, 2019, 1 p.m. | N/A | N/A | N/A | N/A | N/A | 87.0 ppb (74) | N/A | N/A | N/A | N/A | 74.0 | |
| May 14, 2019, noon | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| May 14, 2019, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| May 14, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| May 14, 2019, 9 a.m. | N/A | N/A | N/A | N/A | N/A | 104.0 ppb (81) | N/A | N/A | N/A | N/A | 81.0 |