Lake Elsinore CA, US: 33.6747, -117.3358
| Date Observed (UTC) | NOX | NO | NOY | NO2 | NO2Y | SO2 | OZONE | CO | PM10 | PM2.5 | AQI | AQI/500 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| March 19, 2019, 4 a.m. | 5.2 ppb (5) | -1.0 ppb (0) | N/A | 6.0 ppb (6) | N/A | N/A | 48.0 ppb (37) | 0.28 ppb (3) | 21.0 μg/m3 (19) | 1.6 μg/m3 (7) | 37.0 | |
| March 19, 2019, 3 a.m. | 4.3 ppb (4) | -1.1 ppb (0) | N/A | 5.0 ppb (5) | N/A | N/A | 53.0 ppb (41) | 0.28 ppb (3) | 21.0 μg/m3 (19) | 6.5 μg/m3 (27) | 41.0 | |
| March 19, 2019, 2 a.m. | 3.7 ppb (3) | -1.1 ppb (0) | N/A | 5.0 ppb (5) | N/A | N/A | 58.0 ppb (45) | 0.27 ppb (3) | 23.0 μg/m3 (21) | 7.4 μg/m3 (31) | 45.0 | |
| March 19, 2019, 1 a.m. | 2.0 ppb (2) | -1.1 ppb (0) | N/A | 3.0 ppb (3) | N/A | N/A | 59.0 ppb (45) | 0.25 ppb (3) | 17.0 μg/m3 (15) | 1.6 μg/m3 (7) | 45.0 | |
| March 19, 2019, midnight | 0.8 ppb (1) | -1.1 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | 61.0 ppb (47) | 0.24 ppb (3) | 18.0 μg/m3 (16) | 0.8 μg/m3 (3) | 47.0 | |
| March 18, 2019, 11 p.m. | 0.3 ppb (0) | -1.1 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 58.0 ppb (45) | 0.22 ppb (2) | 15.0 μg/m3 (14) | 0.9 μg/m3 (4) | 45.0 | |
| March 18, 2019, 10 p.m. | 0.1 ppb (0) | -1.1 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 56.0 ppb (43) | 0.21 ppb (2) | 18.0 μg/m3 (16) | 0.4 μg/m3 (2) | 43.0 | |
| March 18, 2019, 9 p.m. | -0.1 ppb (0) | -1.1 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 53.0 ppb (41) | 0.19 ppb (2) | 17.0 μg/m3 (15) | -0.8 μg/m3 (0) | 41.0 | |
| March 18, 2019, 8 p.m. | -0.5 ppb (0) | -1.2 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 51.0 ppb (39) | 0.16 ppb (2) | 3.0 μg/m3 (3) | 2.5 μg/m3 (10) | 39.0 | |
| March 18, 2019, 7 p.m. | 12.5 ppb (12) | 5.3 ppb (5) | N/A | 4.0 ppb (4) | N/A | N/A | 50.0 ppb (38) | 0.17 ppb (2) | 10.0 μg/m3 (9) | 5.8 μg/m3 (24) | 38.0 | |
| March 18, 2019, 6 p.m. | 6.8 ppb (6) | 0.4 ppb (0) | N/A | 6.0 ppb (6) | N/A | N/A | 51.0 ppb (39) | 0.23 ppb (3) | 19.0 μg/m3 (17) | 5.1 μg/m3 (21) | 39.0 | |
| March 18, 2019, 5 p.m. | 10.1 ppb (9) | 1.5 ppb (1) | N/A | 9.0 ppb (8) | N/A | N/A | 42.0 ppb (32) | 0.28 ppb (3) | 19.0 μg/m3 (17) | 3.6 μg/m3 (15) | 32.0 | |
| March 18, 2019, 4 p.m. | 17.7 ppb (16) | 5.2 ppb (5) | N/A | 13.0 ppb (12) | N/A | N/A | 26.0 ppb (20) | 0.41 ppb (5) | 33.0 μg/m3 (30) | 3.6 μg/m3 (15) | 30.0 | |
| March 18, 2019, 3 p.m. | 36.0 ppb (33) | 15.5 ppb (14) | N/A | 21.0 ppb (19) | N/A | N/A | 8.0 ppb (6) | 0.61 ppb (7) | 41.0 μg/m3 (37) | 6.0 μg/m3 (25) | 37.0 | |
| March 18, 2019, 2 p.m. | 46.6 ppb (43) | 20.0 ppb (19) | N/A | 27.0 ppb (25) | N/A | N/A | 2.0 ppb (2) | 0.62 ppb (7) | 35.0 μg/m3 (32) | 7.8 μg/m3 (32) | 43.0 | |
| March 18, 2019, 1 p.m. | 32.9 ppb (30) | 7.7 ppb (7) | N/A | 25.0 ppb (23) | N/A | N/A | 2.0 ppb (2) | 0.5 ppb (6) | 31.0 μg/m3 (28) | 7.5 μg/m3 (31) | 31.0 | |
| March 18, 2019, noon | 24.2 ppb (22) | 1.7 ppb (2) | N/A | 23.0 ppb (21) | N/A | N/A | 5.0 ppb (4) | 0.43 ppb (5) | 21.0 μg/m3 (19) | 9.4 μg/m3 (39) | 39.0 | |
| March 18, 2019, 11 a.m. | 11.0 ppb (10) | -0.3 ppb (0) | N/A | 11.0 ppb (10) | N/A | N/A | 13.0 ppb (10) | 0.33 ppb (4) | 18.0 μg/m3 (16) | 7.5 μg/m3 (31) | 31.0 | |
| March 18, 2019, 10 a.m. | 6.6 ppb (6) | -0.7 ppb (0) | N/A | 7.0 ppb (6) | N/A | N/A | 20.0 ppb (15) | 0.32 ppb (4) | 17.0 μg/m3 (15) | 2.6 μg/m3 (11) | 15.0 | |
| March 18, 2019, 9 a.m. | 8.1 ppb (8) | -0.5 ppb (0) | N/A | 9.0 ppb (8) | N/A | N/A | 18.0 ppb (14) | 0.34 ppb (4) | 18.0 μg/m3 (16) | 5.3 μg/m3 (22) | 22.0 | |
| March 18, 2019, 8 a.m. | 6.5 ppb (6) | -0.8 ppb (0) | N/A | 7.0 ppb (6) | N/A | N/A | 21.0 ppb (16) | 0.34 ppb (4) | 19.0 μg/m3 (17) | 6.6 μg/m3 (28) | 28.0 | |
| March 18, 2019, 7 a.m. | 6.4 ppb (6) | -0.8 ppb (0) | N/A | 7.0 ppb (6) | N/A | N/A | 25.0 ppb (19) | 0.34 ppb (4) | 18.0 μg/m3 (16) | 3.9 μg/m3 (16) | 19.0 | |
| March 18, 2019, 6 a.m. | 6.2 ppb (6) | -1.0 ppb (0) | N/A | 7.0 ppb (6) | N/A | N/A | 35.0 ppb (27) | 0.33 ppb (4) | 23.0 μg/m3 (21) | 1.8 μg/m3 (8) | 27.0 | |
| March 18, 2019, 5 a.m. | 8.8 ppb (8) | -1.0 ppb (0) | N/A | 10.0 ppb (9) | N/A | N/A | 41.0 ppb (32) | 0.39 ppb (4) | 22.0 μg/m3 (20) | 3.4 μg/m3 (14) | 32.0 | |
| March 18, 2019, 4 a.m. | 5.8 ppb (5) | -1.0 ppb (0) | N/A | 7.0 ppb (6) | N/A | N/A | 49.0 ppb (38) | 0.31 ppb (3) | 22.0 μg/m3 (20) | 15.0 μg/m3 (56) | 56.0 | |
| March 18, 2019, 3 a.m. | 5.5 ppb (5) | -1.1 ppb (0) | N/A | 7.0 ppb (6) | N/A | N/A | 51.0 ppb (39) | 0.31 ppb (3) | 26.0 μg/m3 (24) | 6.5 μg/m3 (27) | 39.0 | |
| March 18, 2019, 2 a.m. | 3.7 ppb (3) | -1.1 ppb (0) | N/A | 5.0 ppb (5) | N/A | N/A | 57.0 ppb (44) | 0.28 ppb (3) | 18.0 μg/m3 (16) | 4.1 μg/m3 (17) | 44.0 | |
| March 18, 2019, 1 a.m. | 2.4 ppb (2) | -1.1 ppb (0) | N/A | 3.0 ppb (3) | N/A | N/A | 61.0 ppb (47) | 0.26 ppb (3) | 20.0 μg/m3 (18) | 3.4 μg/m3 (14) | 47.0 | |
| March 18, 2019, midnight | 0.6 ppb (1) | -1.1 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | 58.0 ppb (45) | 0.24 ppb (3) | 19.0 μg/m3 (17) | 2.9 μg/m3 (12) | 45.0 | |
| March 17, 2019, 11 p.m. | -0.1 ppb (0) | -1.1 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 54.0 ppb (42) | 0.21 ppb (2) | 12.0 μg/m3 (11) | -0.1 μg/m3 (0) | 42.0 | |
| March 17, 2019, 10 p.m. | -0.2 ppb (0) | -0.9 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 53.0 ppb (41) | 0.2 ppb (2) | 11.0 μg/m3 (10) | 0.4 μg/m3 (2) | 41.0 | |
| March 17, 2019, 9 p.m. | -0.1 ppb (0) | -1.1 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 53.0 ppb (41) | 0.2 ppb (2) | 15.0 μg/m3 (14) | 0.3 μg/m3 (1) | 41.0 | |
| March 17, 2019, 8 p.m. | -0.1 ppb (0) | -1.1 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 54.0 ppb (42) | 0.18 ppb (2) | 15.0 μg/m3 (14) | 1.9 μg/m3 (8) | 42.0 | |
| March 17, 2019, 7 p.m. | 0.2 ppb (0) | -1.1 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 53.0 ppb (41) | 0.18 ppb (2) | 14.0 μg/m3 (13) | 5.1 μg/m3 (21) | 41.0 | |
| March 17, 2019, 6 p.m. | 1.1 ppb (1) | -0.9 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | 50.0 ppb (38) | 0.19 ppb (2) | 13.0 μg/m3 (12) | 4.8 μg/m3 (20) | 38.0 | |
| March 17, 2019, 5 p.m. | 3.2 ppb (3) | -0.2 ppb (0) | N/A | 3.0 ppb (3) | N/A | N/A | 41.0 ppb (32) | 0.22 ppb (2) | 16.0 μg/m3 (15) | 1.4 μg/m3 (6) | 32.0 | |
| March 17, 2019, 4 p.m. | 5.2 ppb (5) | 0.2 ppb (0) | N/A | 5.0 ppb (5) | N/A | N/A | 34.0 ppb (26) | 0.28 ppb (3) | 17.0 μg/m3 (15) | -2.0 μg/m3 (0) | 26.0 | |
| March 17, 2019, 3 p.m. | 11.1 ppb (10) | 2.2 ppb (2) | N/A | 9.0 ppb (8) | N/A | N/A | 20.0 ppb (15) | 0.33 ppb (4) | 16.0 μg/m3 (15) | 1.8 μg/m3 (8) | 15.0 | |
| March 17, 2019, 2 p.m. | 10.3 ppb (10) | 0.7 ppb (1) | N/A | 10.0 ppb (9) | N/A | N/A | 13.0 ppb (10) | 0.35 ppb (4) | 18.0 μg/m3 (16) | 4.5 μg/m3 (19) | 19.0 | |
| March 17, 2019, 1 p.m. | 9.2 ppb (9) | -0.7 ppb (0) | N/A | 10.0 ppb (9) | N/A | N/A | 12.0 ppb (9) | 0.34 ppb (4) | 18.0 μg/m3 (16) | 2.8 μg/m3 (12) | 16.0 | |
| March 17, 2019, noon | 8.4 ppb (8) | -0.7 ppb (0) | N/A | 9.0 ppb (8) | N/A | N/A | 12.0 ppb (9) | 0.32 ppb (4) | 16.0 μg/m3 (15) | -2.4 μg/m3 (0) | 15.0 | |
| March 17, 2019, 11 a.m. | 8.8 ppb (8) | -0.6 ppb (0) | N/A | 9.0 ppb (8) | N/A | N/A | 14.0 ppb (11) | 0.31 ppb (3) | 15.0 μg/m3 (14) | -1.5 μg/m3 (0) | 14.0 | |
| March 17, 2019, 10 a.m. | 9.1 ppb (8) | -0.7 ppb (0) | N/A | 10.0 ppb (9) | N/A | N/A | 17.0 ppb (13) | 0.31 ppb (3) | 15.0 μg/m3 (14) | 3.1 μg/m3 (13) | 14.0 | |
| March 17, 2019, 9 a.m. | 6.3 ppb (6) | -0.8 ppb (0) | N/A | 7.0 ppb (6) | N/A | N/A | 20.0 ppb (15) | 0.28 ppb (3) | 16.0 μg/m3 (15) | 2.6 μg/m3 (11) | 15.0 | |
| March 17, 2019, 8 a.m. | 5.2 ppb (5) | -0.9 ppb (0) | N/A | 6.0 ppb (6) | N/A | N/A | 22.0 ppb (17) | 0.29 ppb (3) | 15.0 μg/m3 (14) | 3.6 μg/m3 (15) | 17.0 | |
| March 17, 2019, 7 a.m. | 8.2 ppb (8) | -0.9 ppb (0) | N/A | 9.0 ppb (8) | N/A | N/A | 20.0 ppb (15) | 0.34 ppb (4) | 23.0 μg/m3 (21) | 3.8 μg/m3 (16) | 21.0 | |
| March 17, 2019, 6 a.m. | 8.0 ppb (7) | -1.0 ppb (0) | N/A | 9.0 ppb (8) | N/A | N/A | 24.0 ppb (18) | 0.35 ppb (4) | 25.0 μg/m3 (23) | 2.4 μg/m3 (10) | 23.0 | |
| March 17, 2019, 5 a.m. | 9.6 ppb (9) | -0.9 ppb (0) | N/A | 11.0 ppb (10) | N/A | N/A | 23.0 ppb (18) | 0.36 ppb (4) | 30.0 μg/m3 (27) | -1.4 μg/m3 (0) | 27.0 | |
| March 17, 2019, 4 a.m. | 8.7 ppb (8) | -1.0 ppb (0) | N/A | 10.0 ppb (9) | N/A | N/A | 28.0 ppb (22) | 0.32 ppb (4) | 24.0 μg/m3 (22) | -0.8 μg/m3 (0) | 22.0 | |
| March 17, 2019, 3 a.m. | 4.8 ppb (4) | -1.1 ppb (0) | N/A | 6.0 ppb (6) | N/A | N/A | 37.0 ppb (28) | 0.27 ppb (3) | 24.0 μg/m3 (22) | 0.4 μg/m3 (2) | 28.0 | |
| March 17, 2019, 2 a.m. | 2.8 ppb (3) | -1.2 ppb (0) | N/A | 4.0 ppb (4) | N/A | N/A | 43.0 ppb (33) | 0.25 ppb (3) | 21.0 μg/m3 (19) | -2.2 μg/m3 (0) | 33.0 | |
| March 17, 2019, 1 a.m. | 1.0 ppb (1) | -1.2 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | 50.0 ppb (38) | 0.23 ppb (3) | 21.0 μg/m3 (19) | -3.6 μg/m3 (0) | 38.0 | |
| March 17, 2019, midnight | 0.1 ppb (0) | -1.2 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 56.0 ppb (43) | 0.22 ppb (2) | 18.0 μg/m3 (16) | -2.2 μg/m3 (0) | 43.0 | |
| March 16, 2019, 11 p.m. | -0.3 ppb (0) | -1.2 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 59.0 ppb (45) | 0.21 ppb (2) | 13.0 μg/m3 (12) | 0.4 μg/m3 (2) | 45.0 | |
| March 16, 2019, 10 p.m. | -0.1 ppb (0) | -1.1 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 59.0 ppb (45) | 0.21 ppb (2) | 11.0 μg/m3 (10) | 1.9 μg/m3 (8) | 45.0 | |
| March 16, 2019, 9 p.m. | 0.1 ppb (0) | -1.1 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 57.0 ppb (44) | 0.21 ppb (2) | 9.0 μg/m3 (8) | 0.2 μg/m3 (1) | 44.0 | |
| March 16, 2019, 8 p.m. | 0.2 ppb (0) | -1.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 54.0 ppb (42) | 0.21 ppb (2) | 9.0 μg/m3 (8) | 0.9 μg/m3 (4) | 42.0 | |
| March 16, 2019, 7 p.m. | 0.1 ppb (0) | -1.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 52.0 ppb (40) | 0.2 ppb (2) | 9.0 μg/m3 (8) | 2.6 μg/m3 (11) | 40.0 | |
| March 16, 2019, 6 p.m. | 0.9 ppb (1) | -0.8 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | 49.0 ppb (38) | 0.21 ppb (2) | 9.0 μg/m3 (8) | 1.6 μg/m3 (7) | 38.0 | |
| March 16, 2019, 5 p.m. | 2.8 ppb (3) | -0.3 ppb (0) | N/A | 3.0 ppb (3) | N/A | N/A | 44.0 ppb (34) | 0.23 ppb (3) | 11.0 μg/m3 (10) | -0.6 μg/m3 (0) | 34.0 | |
| March 16, 2019, 4 p.m. | 4.9 ppb (5) | 0.1 ppb (0) | N/A | 5.0 ppb (5) | N/A | N/A | 41.0 ppb (32) | 0.24 ppb (3) | 16.0 μg/m3 (15) | -1.0 μg/m3 (0) | 32.0 | |
| March 16, 2019, 3 p.m. | 10.5 ppb (10) | 0.9 ppb (1) | N/A | 10.0 ppb (9) | N/A | N/A | 33.0 ppb (25) | 0.29 ppb (3) | 12.0 μg/m3 (11) | 1.6 μg/m3 (7) | 25.0 | |
| March 16, 2019, 2 p.m. | 10.5 ppb (10) | 0.1 ppb (0) | N/A | 10.0 ppb (9) | N/A | N/A | 28.0 ppb (22) | 0.3 ppb (3) | 11.0 μg/m3 (10) | 0.1 μg/m3 (0) | 22.0 | |
| March 16, 2019, 1 p.m. | 7.0 ppb (6) | -1.2 ppb (0) | N/A | 8.0 ppb (7) | N/A | N/A | 32.0 ppb (25) | 0.26 ppb (3) | 8.0 μg/m3 (7) | -0.1 μg/m3 (0) | 25.0 | |
| March 16, 2019, noon | 3.5 ppb (3) | -1.2 ppb (0) | N/A | 5.0 ppb (5) | N/A | N/A | 35.0 ppb (27) | 0.24 ppb (3) | 7.0 μg/m3 (6) | -0.4 μg/m3 (0) | 27.0 | |
| March 16, 2019, 11 a.m. | 3.6 ppb (3) | -1.2 ppb (0) | N/A | 5.0 ppb (5) | N/A | N/A | 35.0 ppb (27) | 0.24 ppb (3) | 5.0 μg/m3 (5) | -2.2 μg/m3 (0) | 27.0 | |
| March 16, 2019, 10 a.m. | 2.3 ppb (2) | -1.2 ppb (0) | N/A | 4.0 ppb (4) | N/A | N/A | 37.0 ppb (28) | 0.23 ppb (3) | 4.0 μg/m3 (4) | -0.8 μg/m3 (0) | 28.0 | |
| March 16, 2019, 9 a.m. | 6.8 ppb (6) | -1.1 ppb (0) | N/A | 8.0 ppb (7) | N/A | N/A | 27.0 ppb (21) | 0.29 ppb (3) | 10.0 μg/m3 (9) | -0.2 μg/m3 (0) | 21.0 | |
| March 16, 2019, 8 a.m. | 4.6 ppb (4) | -1.2 ppb (0) | N/A | 6.0 ppb (6) | N/A | N/A | 34.0 ppb (26) | 0.28 ppb (3) | 7.0 μg/m3 (6) | -1.3 μg/m3 (0) | 26.0 | |
| March 16, 2019, 7 a.m. | 6.3 ppb (6) | -1.1 ppb (0) | N/A | 7.0 ppb (6) | N/A | N/A | 31.0 ppb (24) | 0.28 ppb (3) | 8.0 μg/m3 (7) | -4.4 μg/m3 (0) | 24.0 | |
| March 16, 2019, 6 a.m. | 11.4 ppb (11) | -1.0 ppb (0) | N/A | 12.0 ppb (11) | N/A | N/A | 25.0 ppb (19) | 0.34 ppb (4) | 14.0 μg/m3 (13) | -2.6 μg/m3 (0) | 19.0 | |
| March 16, 2019, 5 a.m. | 8.3 ppb (8) | -1.0 ppb (0) | N/A | 9.0 ppb (8) | N/A | N/A | 28.0 ppb (22) | 0.32 ppb (4) | 18.0 μg/m3 (16) | -0.6 μg/m3 (0) | 22.0 | |
| March 16, 2019, 4 a.m. | 6.9 ppb (6) | -1.1 ppb (0) | N/A | 8.0 ppb (7) | N/A | N/A | 33.0 ppb (25) | 0.29 ppb (3) | 16.0 μg/m3 (15) | -2.9 μg/m3 (0) | 25.0 | |
| March 16, 2019, 3 a.m. | 6.3 ppb (6) | -1.1 ppb (0) | N/A | 7.0 ppb (6) | N/A | N/A | 37.0 ppb (28) | 0.26 ppb (3) | 13.0 μg/m3 (12) | -1.3 μg/m3 (0) | 28.0 | |
| March 16, 2019, 2 a.m. | 3.4 ppb (3) | -1.2 ppb (0) | N/A | 5.0 ppb (5) | N/A | N/A | 39.0 ppb (30) | 0.25 ppb (3) | 15.0 μg/m3 (14) | -2.2 μg/m3 (0) | 30.0 | |
| March 16, 2019, 1 a.m. | 2.4 ppb (2) | -1.2 ppb (0) | N/A | 4.0 ppb (4) | N/A | N/A | 46.0 ppb (35) | 0.25 ppb (3) | 10.0 μg/m3 (9) | -2.9 μg/m3 (0) | 35.0 | |
| March 16, 2019, midnight | 1.0 ppb (1) | -1.0 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | 50.0 ppb (38) | 0.22 ppb (2) | 8.0 μg/m3 (7) | -2.3 μg/m3 (0) | 38.0 | |
| March 15, 2019, 11 p.m. | 0.4 ppb (0) | -1.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 51.0 ppb (39) | 0.21 ppb (2) | 8.0 μg/m3 (7) | -3.9 μg/m3 (0) | 39.0 | |
| March 15, 2019, 10 p.m. | -0.1 ppb (0) | -1.1 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 51.0 ppb (39) | 0.2 ppb (2) | 6.0 μg/m3 (5) | -2.5 μg/m3 (0) | 39.0 | |
| March 15, 2019, 9 p.m. | -0.1 ppb (0) | -1.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 50.0 ppb (38) | 0.19 ppb (2) | 6.0 μg/m3 (5) | -1.3 μg/m3 (0) | 38.0 | |
| March 15, 2019, 8 p.m. | 8.4 ppb (8) | 2.4 ppb (2) | N/A | 5.0 ppb (5) | N/A | N/A | 47.0 ppb (36) | 0.19 ppb (2) | 8.0 μg/m3 (7) | -3.1 μg/m3 (0) | 36.0 | |
| March 15, 2019, 7 p.m. | 1.2 ppb (1) | -0.5 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | 48.0 ppb (37) | 0.19 ppb (2) | 7.0 μg/m3 (6) | 0.3 μg/m3 (1) | 37.0 | |
| March 15, 2019, 6 p.m. | 0.0 ppb (0) | -1.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 47.0 ppb (36) | 0.2 ppb (2) | 11.0 μg/m3 (10) | -0.2 μg/m3 (0) | 36.0 | |
| March 15, 2019, 5 p.m. | 1.9 ppb (2) | -0.5 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | 45.0 ppb (35) | 0.22 ppb (2) | 9.0 μg/m3 (8) | 1.1 μg/m3 (5) | 35.0 | |
| March 15, 2019, 4 p.m. | 7.5 ppb (7) | 0.8 ppb (1) | N/A | 7.0 ppb (6) | N/A | N/A | 36.0 ppb (28) | 0.25 ppb (3) | 12.0 μg/m3 (11) | 4.5 μg/m3 (19) | 28.0 | |
| March 15, 2019, 3 p.m. | 11.9 ppb (11) | 1.3 ppb (1) | N/A | 11.0 ppb (10) | N/A | N/A | 32.0 ppb (25) | 0.3 ppb (3) | 16.0 μg/m3 (15) | 2.3 μg/m3 (10) | 25.0 | |
| March 15, 2019, 2 p.m. | 15.4 ppb (14) | 0.0 ppb (0) | N/A | 15.0 ppb (14) | N/A | N/A | 25.0 ppb (19) | 0.31 ppb (3) | 19.0 μg/m3 (17) | 2.6 μg/m3 (11) | 19.0 | |
| March 15, 2019, 1 p.m. | 25.1 ppb (23) | -0.6 ppb (0) | N/A | 26.0 ppb (24) | N/A | N/A | 12.0 ppb (9) | 0.36 ppb (4) | 18.0 μg/m3 (16) | 2.1 μg/m3 (9) | 24.0 | |
| March 15, 2019, noon | 20.4 ppb (19) | -0.7 ppb (0) | N/A | 21.0 ppb (19) | N/A | N/A | 14.0 ppb (11) | 0.33 ppb (4) | 13.0 μg/m3 (12) | 0.2 μg/m3 (1) | 19.0 | |
| March 15, 2019, 11 a.m. | 10.1 ppb (9) | -0.8 ppb (0) | N/A | 11.0 ppb (10) | N/A | N/A | 24.0 ppb (18) | 0.28 ppb (3) | 8.0 μg/m3 (7) | -3.8 μg/m3 (0) | 18.0 | |
| March 15, 2019, 10 a.m. | 3.6 ppb (3) | -1.2 ppb (0) | N/A | 5.0 ppb (5) | N/A | N/A | 31.0 ppb (24) | 0.26 ppb (3) | 6.0 μg/m3 (5) | -4.4 μg/m3 (0) | 24.0 | |
| March 15, 2019, 9 a.m. | 4.7 ppb (4) | -1.2 ppb (0) | N/A | 6.0 ppb (6) | N/A | N/A | 34.0 ppb (26) | 0.26 ppb (3) | 5.0 μg/m3 (5) | -1.0 μg/m3 (0) | 26.0 | |
| March 15, 2019, 8 a.m. | 5.6 ppb (5) | -1.1 ppb (0) | N/A | 7.0 ppb (6) | N/A | N/A | 31.0 ppb (24) | 0.27 ppb (3) | 6.0 μg/m3 (5) | -1.7 μg/m3 (0) | 24.0 | |
| March 15, 2019, 7 a.m. | 5.0 ppb (5) | -1.1 ppb (0) | N/A | 6.0 ppb (6) | N/A | N/A | 34.0 ppb (26) | 0.28 ppb (3) | 5.0 μg/m3 (5) | -1.7 μg/m3 (0) | 26.0 | |
| March 15, 2019, 6 a.m. | 5.6 ppb (5) | -0.9 ppb (0) | N/A | 7.0 ppb (6) | N/A | N/A | 35.0 ppb (27) | 0.32 ppb (4) | 7.0 μg/m3 (6) | 0.1 μg/m3 (0) | 27.0 | |
| March 15, 2019, 5 a.m. | 8.3 ppb (8) | -0.8 ppb (0) | N/A | 9.0 ppb (8) | N/A | N/A | 33.0 ppb (25) | 0.32 ppb (4) | 8.0 μg/m3 (7) | -0.7 μg/m3 (0) | 25.0 | |
| March 15, 2019, 4 a.m. | 2.1 ppb (2) | -1.2 ppb (0) | N/A | 3.0 ppb (3) | N/A | N/A | 41.0 ppb (32) | 0.26 ppb (3) | 9.0 μg/m3 (8) | -2.9 μg/m3 (0) | 32.0 | |
| March 15, 2019, 3 a.m. | 1.4 ppb (1) | -1.2 ppb (0) | N/A | 3.0 ppb (3) | N/A | N/A | 44.0 ppb (34) | 0.25 ppb (3) | 11.0 μg/m3 (10) | -2.7 μg/m3 (0) | 34.0 | |
| March 15, 2019, 2 a.m. | 1.8 ppb (2) | -1.2 ppb (0) | N/A | 3.0 ppb (3) | N/A | N/A | 46.0 ppb (35) | 0.25 ppb (3) | 12.0 μg/m3 (11) | -3.4 μg/m3 (0) | 35.0 | |
| March 15, 2019, 1 a.m. | 2.3 ppb (2) | -1.1 ppb (0) | N/A | 3.0 ppb (3) | N/A | N/A | 47.0 ppb (36) | 0.25 ppb (3) | 12.0 μg/m3 (11) | -4.6 μg/m3 (0) | 36.0 | |
| March 15, 2019, midnight | 1.2 ppb (1) | -1.0 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | 50.0 ppb (38) | 0.24 ppb (3) | 11.0 μg/m3 (10) | -0.1 μg/m3 (0) | 38.0 | |
| March 14, 2019, 11 p.m. | 1.1 ppb (1) | -0.8 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | 51.0 ppb (39) | 0.24 ppb (3) | 14.0 μg/m3 (13) | 0.9 μg/m3 (4) | 39.0 | |
| March 14, 2019, 10 p.m. | 1.2 ppb (1) | -0.8 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | 50.0 ppb (38) | 0.23 ppb (3) | 24.0 μg/m3 (22) | -1.5 μg/m3 (0) | 38.0 | |
| March 14, 2019, 9 p.m. | 0.9 ppb (1) | -0.8 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | 52.0 ppb (40) | 0.23 ppb (3) | 10.0 μg/m3 (9) | -1.2 μg/m3 (0) | 40.0 | |
| March 14, 2019, 8 p.m. | 1.4 ppb (1) | -0.7 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | 51.0 ppb (39) | 0.23 ppb (3) | 14.0 μg/m3 (13) | -1.2 μg/m3 (0) | 39.0 | |
| March 14, 2019, 7 p.m. | 1.6 ppb (1) | -0.6 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | 49.0 ppb (38) | 0.23 ppb (3) | 15.0 μg/m3 (14) | -2.9 μg/m3 (0) | 38.0 | |
| March 14, 2019, 6 p.m. | 1.6 ppb (1) | -0.6 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | 47.0 ppb (36) | 0.23 ppb (3) | 9.0 μg/m3 (8) | -1.0 μg/m3 (0) | 36.0 | |
| March 14, 2019, 5 p.m. | 5.2 ppb (5) | 0.5 ppb (0) | N/A | 5.0 ppb (5) | N/A | N/A | 41.0 ppb (32) | 0.25 ppb (3) | 29.0 μg/m3 (26) | -2.7 μg/m3 (0) | 32.0 | |
| March 14, 2019, 4 p.m. | 5.3 ppb (5) | 0.3 ppb (0) | N/A | 5.0 ppb (5) | N/A | N/A | 40.0 ppb (31) | 0.26 ppb (3) | 25.0 μg/m3 (23) | -2.7 μg/m3 (0) | 31.0 | |
| March 14, 2019, 3 p.m. | 12.0 ppb (11) | 1.2 ppb (1) | N/A | 11.0 ppb (10) | N/A | N/A | 32.0 ppb (25) | 0.3 ppb (3) | 29.0 μg/m3 (26) | -0.6 μg/m3 (0) | 26.0 | |
| March 14, 2019, 2 p.m. | 16.9 ppb (16) | 0.7 ppb (1) | N/A | 16.0 ppb (15) | N/A | N/A | 22.0 ppb (17) | 0.36 ppb (4) | 25.0 μg/m3 (23) | 0.2 μg/m3 (1) | 23.0 | |
| March 14, 2019, 1 p.m. | 14.4 ppb (13) | -1.0 ppb (0) | N/A | 15.0 ppb (14) | N/A | N/A | 24.0 ppb (18) | 0.29 ppb (3) | 15.0 μg/m3 (14) | 0.7 μg/m3 (3) | 18.0 | |
| March 14, 2019, noon | 9.8 ppb (9) | -1.1 ppb (0) | N/A | 11.0 ppb (10) | N/A | N/A | 28.0 ppb (22) | 0.28 ppb (3) | 14.0 μg/m3 (13) | -0.3 μg/m3 (0) | 22.0 | |
| March 14, 2019, 11 a.m. | 7.2 ppb (7) | -1.1 ppb (0) | N/A | 8.0 ppb (7) | N/A | N/A | 26.0 ppb (20) | 0.26 ppb (3) | 16.0 μg/m3 (15) | 2.8 μg/m3 (12) | 20.0 | |
| March 14, 2019, 10 a.m. | 5.7 ppb (5) | -1.1 ppb (0) | N/A | 7.0 ppb (6) | N/A | N/A | 26.0 ppb (20) | 0.27 ppb (3) | 13.0 μg/m3 (12) | 5.2 μg/m3 (22) | 22.0 | |
| March 14, 2019, 9 a.m. | 3.7 ppb (3) | -1.1 ppb (0) | N/A | 5.0 ppb (5) | N/A | N/A | 26.0 ppb (20) | 0.27 ppb (3) | 14.0 μg/m3 (13) | 5.3 μg/m3 (22) | 22.0 | |
| March 14, 2019, 8 a.m. | 5.7 ppb (5) | -1.1 ppb (0) | N/A | 7.0 ppb (6) | N/A | N/A | 17.0 ppb (13) | 0.31 ppb (3) | 19.0 μg/m3 (17) | 4.1 μg/m3 (17) | 17.0 | |
| March 14, 2019, 7 a.m. | 6.0 ppb (6) | -1.0 ppb (0) | N/A | 7.0 ppb (6) | N/A | N/A | 16.0 ppb (12) | 0.32 ppb (4) | 20.0 μg/m3 (18) | 5.0 μg/m3 (21) | 21.0 | |
| March 14, 2019, 6 a.m. | 6.3 ppb (6) | -1.0 ppb (0) | N/A | 7.0 ppb (6) | N/A | N/A | 17.0 ppb (13) | 0.31 ppb (3) | 19.0 μg/m3 (17) | 7.4 μg/m3 (31) | 31.0 | |
| March 14, 2019, 5 a.m. | 8.5 ppb (8) | -0.8 ppb (0) | N/A | 9.0 ppb (8) | N/A | N/A | 23.0 ppb (18) | 0.34 ppb (4) | 23.0 μg/m3 (21) | 7.7 μg/m3 (32) | 32.0 | |
| March 14, 2019, 4 a.m. | 8.8 ppb (8) | -1.0 ppb (0) | N/A | 10.0 ppb (9) | N/A | N/A | 26.0 ppb (20) | 0.33 ppb (4) | 24.0 μg/m3 (22) | 7.5 μg/m3 (31) | 31.0 | |
| March 14, 2019, 3 a.m. | 3.3 ppb (3) | -1.1 ppb (0) | N/A | 4.0 ppb (4) | N/A | N/A | 40.0 ppb (31) | 0.27 ppb (3) | 22.0 μg/m3 (20) | 6.5 μg/m3 (27) | 31.0 | |
| March 14, 2019, 2 a.m. | 2.0 ppb (2) | -1.1 ppb (0) | N/A | 3.0 ppb (3) | N/A | N/A | 47.0 ppb (36) | 0.25 ppb (3) | 21.0 μg/m3 (19) | 6.7 μg/m3 (28) | 36.0 | |
| March 14, 2019, 1 a.m. | 1.7 ppb (2) | -1.1 ppb (0) | N/A | 3.0 ppb (3) | N/A | N/A | 51.0 ppb (39) | 0.25 ppb (3) | 26.0 μg/m3 (24) | 6.5 μg/m3 (27) | 39.0 | |
| March 14, 2019, midnight | 0.9 ppb (1) | -1.1 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | 56.0 ppb (43) | 0.23 ppb (3) | 19.0 μg/m3 (17) | 7.9 μg/m3 (33) | 43.0 | |
| March 13, 2019, 11 p.m. | 0.3 ppb (0) | -1.1 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 56.0 ppb (43) | 0.22 ppb (2) | 15.0 μg/m3 (14) | 7.0 μg/m3 (29) | 43.0 | |
| March 13, 2019, 10 p.m. | 0.9 ppb (1) | -1.0 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | 55.0 ppb (42) | 0.22 ppb (2) | 13.0 μg/m3 (12) | 2.9 μg/m3 (12) | 42.0 | |
| March 13, 2019, 9 p.m. | 1.6 ppb (1) | -0.7 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | 51.0 ppb (39) | 0.21 ppb (2) | 17.0 μg/m3 (15) | 4.1 μg/m3 (17) | 39.0 | |
| March 13, 2019, 8 p.m. | 1.0 ppb (1) | -0.8 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | 52.0 ppb (40) | 0.2 ppb (2) | 10.0 μg/m3 (9) | 3.8 μg/m3 (16) | 40.0 | |
| March 13, 2019, 7 p.m. | 2.3 ppb (2) | -0.4 ppb (0) | N/A | 3.0 ppb (3) | N/A | N/A | 48.0 ppb (37) | 0.2 ppb (2) | 12.0 μg/m3 (11) | 0.4 μg/m3 (2) | 37.0 | |
| March 13, 2019, 6 p.m. | 2.2 ppb (2) | -0.4 ppb (0) | N/A | 3.0 ppb (3) | N/A | N/A | 45.0 ppb (35) | 0.2 ppb (2) | 7.0 μg/m3 (6) | 4.0 μg/m3 (17) | 35.0 | |
| March 13, 2019, 5 p.m. | 1.5 ppb (1) | -0.5 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | 41.0 ppb (32) | 0.2 ppb (2) | 14.0 μg/m3 (13) | 7.0 μg/m3 (29) | 32.0 | |
| March 13, 2019, 4 p.m. | 0.5 ppb (0) | -0.8 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 39.0 ppb (30) | 0.21 ppb (2) | 27.0 μg/m3 (25) | 2.9 μg/m3 (12) | 30.0 | |
| March 13, 2019, 3 p.m. | 2.5 ppb (2) | -0.9 ppb (0) | N/A | 3.0 ppb (3) | N/A | N/A | 37.0 ppb (28) | 0.24 ppb (3) | 33.0 μg/m3 (30) | 3.1 μg/m3 (13) | 30.0 | |
| March 13, 2019, 2 p.m. | 2.9 ppb (3) | -1.2 ppb (0) | N/A | 4.0 ppb (4) | N/A | N/A | 36.0 ppb (28) | 0.25 ppb (3) | 30.0 μg/m3 (27) | 2.6 μg/m3 (11) | 28.0 | |
| March 13, 2019, 1 p.m. | 1.1 ppb (1) | -1.3 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | 39.0 ppb (30) | 0.24 ppb (3) | 25.0 μg/m3 (23) | 3.6 μg/m3 (15) | 30.0 | |
| March 13, 2019, noon | -0.6 ppb (0) | -1.3 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 41.0 ppb (32) | 0.22 ppb (2) | 24.0 μg/m3 (22) | 6.5 μg/m3 (27) | 32.0 | |
| March 13, 2019, 11 a.m. | -0.9 ppb (0) | -1.3 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | 41.0 ppb (32) | 0.2 ppb (2) | 17.0 μg/m3 (15) | 1.1 μg/m3 (5) | 32.0 | |
| March 13, 2019, 10 a.m. | -0.6 ppb (0) | -1.3 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 39.0 ppb (30) | 0.21 ppb (2) | 5.0 μg/m3 (5) | 4.8 μg/m3 (20) | 30.0 | |
| March 13, 2019, 9 a.m. | -1.1 ppb (0) | -1.3 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | 45.0 ppb (35) | 0.2 ppb (2) | 10.0 μg/m3 (9) | 5.9 μg/m3 (25) | 35.0 | |
| March 13, 2019, 8 a.m. | -1.0 ppb (0) | -1.3 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | 45.0 ppb (35) | 0.2 ppb (2) | 5.0 μg/m3 (5) | 0.2 μg/m3 (1) | 35.0 | |
| March 13, 2019, 7 a.m. | -0.7 ppb (0) | -1.3 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 40.0 ppb (31) | 0.2 ppb (2) | 9.0 μg/m3 (8) | 4.1 μg/m3 (17) | 31.0 | |
| March 13, 2019, 5 a.m. | -0.6 ppb (0) | -1.3 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 43.0 ppb (33) | 0.2 ppb (2) | 22.0 μg/m3 (20) | 4.7 μg/m3 (20) | 33.0 | |
| March 13, 2019, 4 a.m. | -0.2 ppb (0) | -1.3 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 44.0 ppb (34) | 0.2 ppb (2) | 18.0 μg/m3 (16) | 3.7 μg/m3 (15) | 34.0 | |
| March 13, 2019, 3 a.m. | 0.6 ppb (1) | -1.2 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | 40.0 ppb (31) | 0.2 ppb (2) | 17.0 μg/m3 (15) | 5.3 μg/m3 (22) | 31.0 | |
| March 13, 2019, 2 a.m. | 0.7 ppb (1) | -1.2 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | 42.0 ppb (32) | 0.2 ppb (2) | 14.0 μg/m3 (13) | 7.0 μg/m3 (29) | 32.0 | |
| March 13, 2019, 1 a.m. | 0.1 ppb (0) | -1.2 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 44.0 ppb (34) | 0.2 ppb (2) | 13.0 μg/m3 (12) | 3.3 μg/m3 (14) | 34.0 | |
| March 13, 2019, midnight | 0.3 ppb (0) | -1.1 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 49.0 ppb (38) | 0.2 ppb (2) | 6.0 μg/m3 (5) | 1.7 μg/m3 (7) | 38.0 | |
| March 12, 2019, 11 p.m. | 1.5 ppb (1) | -0.9 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | 54.0 ppb (42) | 0.22 ppb (2) | 7.0 μg/m3 (6) | 5.1 μg/m3 (21) | 42.0 | |
| March 12, 2019, 10 p.m. | 1.0 ppb (1) | -1.0 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | 49.0 ppb (38) | 0.21 ppb (2) | 7.0 μg/m3 (6) | 2.6 μg/m3 (11) | 38.0 | |
| March 12, 2019, 9 p.m. | 0.7 ppb (1) | -0.9 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | 49.0 ppb (38) | 0.19 ppb (2) | 6.0 μg/m3 (5) | -1.2 μg/m3 (0) | 38.0 | |
| March 12, 2019, 8 p.m. | 1.2 ppb (1) | -0.8 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | 46.0 ppb (35) | 0.18 ppb (2) | 2.0 μg/m3 (2) | -1.3 μg/m3 (0) | 35.0 | |
| March 12, 2019, 7 p.m. | 2.1 ppb (2) | -0.5 ppb (0) | N/A | 3.0 ppb (3) | N/A | N/A | 43.0 ppb (33) | 0.19 ppb (2) | 2.0 μg/m3 (2) | -0.6 μg/m3 (0) | 33.0 | |
| March 12, 2019, 6 p.m. | 4.3 ppb (4) | 0.4 ppb (0) | N/A | 4.0 ppb (4) | N/A | N/A | 39.0 ppb (30) | 0.2 ppb (2) | 4.0 μg/m3 (4) | -1.8 μg/m3 (0) | 30.0 | |
| March 12, 2019, 5 p.m. | 5.7 ppb (5) | 0.6 ppb (1) | N/A | 5.0 ppb (5) | N/A | N/A | 37.0 ppb (28) | 0.2 ppb (2) | 2.0 μg/m3 (2) | -1.5 μg/m3 (0) | 28.0 | |
| March 12, 2019, 4 p.m. | 5.1 ppb (5) | 0.3 ppb (0) | N/A | 5.0 ppb (5) | N/A | N/A | 34.0 ppb (26) | 0.2 ppb (2) | 2.0 μg/m3 (2) | 3.0 μg/m3 (12) | 26.0 | |
| March 12, 2019, 3 p.m. | 7.1 ppb (7) | 0.2 ppb (0) | N/A | 7.0 ppb (6) | N/A | N/A | 28.0 ppb (22) | 0.22 ppb (2) | 3.0 μg/m3 (3) | 2.6 μg/m3 (11) | 22.0 | |
| March 12, 2019, 2 p.m. | 6.2 ppb (6) | -0.9 ppb (0) | N/A | 7.0 ppb (6) | N/A | N/A | 25.0 ppb (19) | 0.26 ppb (3) | 5.0 μg/m3 (5) | 2.8 μg/m3 (12) | 19.0 | |
| March 12, 2019, 1 p.m. | 3.4 ppb (3) | -1.1 ppb (0) | N/A | 4.0 ppb (4) | N/A | N/A | 28.0 ppb (22) | 0.22 ppb (2) | 3.0 μg/m3 (3) | 1.1 μg/m3 (5) | 22.0 | |
| March 12, 2019, noon | 7.4 ppb (7) | -1.0 ppb (0) | N/A | 8.0 ppb (7) | N/A | N/A | 23.0 ppb (18) | 0.24 ppb (3) | 3.0 μg/m3 (3) | -0.6 μg/m3 (0) | 18.0 | |
| March 12, 2019, 11 a.m. | 8.9 ppb (8) | -1.2 ppb (0) | N/A | 10.0 ppb (9) | N/A | N/A | 24.0 ppb (18) | 0.24 ppb (3) | 3.0 μg/m3 (3) | -4.3 μg/m3 (0) | 18.0 | |
| March 12, 2019, 10 a.m. | 7.0 ppb (6) | -1.2 ppb (0) | N/A | 8.0 ppb (7) | N/A | N/A | 30.0 ppb (23) | 0.23 ppb (3) | 1.0 μg/m3 (1) | -4.0 μg/m3 (0) | 23.0 | |
| March 12, 2019, 9 a.m. | 2.2 ppb (2) | -1.2 ppb (0) | N/A | 3.0 ppb (3) | N/A | N/A | 29.0 ppb (22) | 0.21 ppb (2) | 2.0 μg/m3 (2) | -1.8 μg/m3 (0) | 22.0 | |
| March 12, 2019, 8 a.m. | 1.5 ppb (1) | -1.2 ppb (0) | N/A | 3.0 ppb (3) | N/A | N/A | 27.0 ppb (21) | 0.22 ppb (2) | 4.0 μg/m3 (4) | 1.5 μg/m3 (6) | 21.0 | |
| March 12, 2019, 7 a.m. | 6.6 ppb (6) | -1.2 ppb (0) | N/A | 8.0 ppb (7) | N/A | N/A | 21.0 ppb (16) | 0.28 ppb (3) | 5.0 μg/m3 (5) | 4.0 μg/m3 (17) | 17.0 | |
| March 12, 2019, 6 a.m. | 8.1 ppb (8) | -1.1 ppb (0) | N/A | 9.0 ppb (8) | N/A | N/A | 18.0 ppb (14) | 0.31 ppb (3) | 9.0 μg/m3 (8) | -0.4 μg/m3 (0) | 14.0 | |
| March 12, 2019, 5 a.m. | 8.0 ppb (7) | -1.1 ppb (0) | N/A | 9.0 ppb (8) | N/A | N/A | 24.0 ppb (18) | 0.31 ppb (3) | 10.0 μg/m3 (9) | -2.1 μg/m3 (0) | 18.0 | |
| March 12, 2019, 4 a.m. | 2.6 ppb (2) | -1.2 ppb (0) | N/A | 4.0 ppb (4) | N/A | N/A | 37.0 ppb (28) | 0.22 ppb (2) | 7.0 μg/m3 (6) | 0.9 μg/m3 (4) | 28.0 |