Calexico CA, US: 32.676102, -115.483299
| Date Observed (UTC) | NOX | NO | NOY | NO2 | NO2Y | SO2 | OZONE | CO | PM10 | PM2.5 | AQI | AQI/500 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| March 25, 2019, 8 a.m. | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | N/A | 16.0 μg/m3 (59) | 59.0 | |
| March 25, 2019, 7 a.m. | 20.1 ppb (19) | 0.3 ppb (0) | N/A | 20.0 ppb (19) | N/A | 0.0 ppb (0) | 21.0 ppb (16) | 0.39 ppb (4) | N/A | 14.0 μg/m3 (54) | 54.0 | |
| March 25, 2019, 6 a.m. | 19.9 ppb (18) | 1.6 ppb (1) | N/A | 18.0 ppb (17) | N/A | 0.0 ppb (0) | 22.0 ppb (17) | 0.33 ppb (4) | 34.0 μg/m3 (31) | 12.0 μg/m3 (50) | 50.0 | |
| March 25, 2019, 5 a.m. | 55.5 ppb (52) | 12.8 ppb (12) | N/A | 43.0 ppb (40) | N/A | 0.0 ppb (0) | 6.0 ppb (5) | 0.82 ppb (9) | 68.0 μg/m3 (56) | 27.0 μg/m3 (82) | 82.0 | |
| March 25, 2019, 3 a.m. | 40.6 ppb (38) | 1.2 ppb (1) | N/A | 39.0 ppb (36) | N/A | 0.0 ppb (0) | 18.0 ppb (14) | 0.66 ppb (7) | 59.0 μg/m3 (52) | 18.0 μg/m3 (63) | 63.0 | |
| March 25, 2019, 2 a.m. | 14.9 ppb (14) | 1.0 ppb (1) | N/A | 14.0 ppb (13) | N/A | 0.0 ppb (0) | 48.0 ppb (37) | 0.3 ppb (3) | 39.0 μg/m3 (35) | 7.0 μg/m3 (29) | 37.0 | |
| March 25, 2019, 1 a.m. | 3.2 ppb (3) | 0.1 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 67.0 ppb (52) | 0.16 ppb (2) | 15.0 μg/m3 (14) | 5.0 μg/m3 (21) | 52.0 | |
| March 25, 2019, midnight | 1.6 ppb (1) | -0.4 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 69.0 ppb (53) | 0.14 ppb (2) | 14.0 μg/m3 (13) | 8.0 μg/m3 (33) | 53.0 | |
| March 24, 2019, 11 p.m. | 1.4 ppb (1) | -0.4 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 67.0 ppb (52) | 0.13 ppb (1) | 13.0 μg/m3 (12) | 5.0 μg/m3 (21) | 52.0 | |
| March 24, 2019, 10 p.m. | 2.0 ppb (2) | -0.3 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 65.0 ppb (50) | 0.14 ppb (2) | 22.0 μg/m3 (20) | 5.0 μg/m3 (21) | 50.0 | |
| March 24, 2019, 9 p.m. | 2.3 ppb (2) | -0.2 ppb (0) | N/A | 3.0 ppb (3) | N/A | 1.0 ppb (1) | 65.0 ppb (50) | 0.14 ppb (2) | 19.0 μg/m3 (17) | 6.0 μg/m3 (25) | 50.0 | |
| March 24, 2019, 8 p.m. | 2.7 ppb (3) | -0.3 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 63.0 ppb (48) | 0.15 ppb (2) | 24.0 μg/m3 (22) | 7.0 μg/m3 (29) | 48.0 | |
| March 24, 2019, 7 p.m. | 2.5 ppb (2) | -0.2 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 59.0 ppb (45) | 0.15 ppb (2) | 11.0 μg/m3 (10) | 7.0 μg/m3 (29) | 45.0 | |
| March 24, 2019, 6 p.m. | 2.6 ppb (2) | -0.1 ppb (0) | N/A | 3.0 ppb (3) | N/A | 1.0 ppb (1) | 55.0 ppb (42) | 0.15 ppb (2) | 19.0 μg/m3 (17) | 7.0 μg/m3 (29) | 42.0 | |
| March 24, 2019, 5 p.m. | 2.6 ppb (2) | -0.1 ppb (0) | N/A | 3.0 ppb (3) | N/A | 1.0 ppb (1) | 51.0 ppb (39) | 0.15 ppb (2) | 22.0 μg/m3 (20) | 8.0 μg/m3 (33) | 39.0 | |
| March 24, 2019, 4 p.m. | 2.6 ppb (2) | -0.1 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 44.0 ppb (34) | 0.14 ppb (2) | 26.0 μg/m3 (24) | 8.0 μg/m3 (33) | 34.0 | |
| March 24, 2019, 3 p.m. | 3.5 ppb (3) | 0.1 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 40.0 ppb (31) | 0.15 ppb (2) | 29.0 μg/m3 (26) | 9.0 μg/m3 (38) | 38.0 | |
| March 24, 2019, 2 p.m. | 5.4 ppb (5) | 0.2 ppb (0) | N/A | 5.0 ppb (5) | N/A | 0.0 ppb (0) | 35.0 ppb (27) | 0.16 ppb (2) | 19.0 μg/m3 (17) | 8.0 μg/m3 (33) | 33.0 | |
| March 24, 2019, 1 p.m. | 2.9 ppb (3) | -0.2 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 41.0 ppb (32) | 0.14 ppb (2) | 16.0 μg/m3 (15) | 6.0 μg/m3 (25) | 32.0 | |
| March 24, 2019, noon | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 13.0 μg/m3 (12) | 7.0 μg/m3 (29) | 29.0 | |
| March 24, 2019, 11 a.m. | 1.5 ppb (1) | -0.2 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 45.0 ppb (35) | 0.12 ppb (1) | 11.0 μg/m3 (10) | 6.0 μg/m3 (25) | 35.0 | |
| March 24, 2019, 10 a.m. | 1.3 ppb (1) | -0.5 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 43.0 ppb (33) | 0.12 ppb (1) | 8.0 μg/m3 (7) | 5.0 μg/m3 (21) | 33.0 | |
| March 24, 2019, 9 a.m. | 1.7 ppb (2) | -0.4 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 40.0 ppb (31) | 0.12 ppb (1) | 9.0 μg/m3 (8) | 5.0 μg/m3 (21) | 31.0 | |
| March 24, 2019, 8 a.m. | 2.2 ppb (2) | -0.4 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 43.0 ppb (33) | 0.12 ppb (1) | 8.0 μg/m3 (7) | 3.0 μg/m3 (12) | 33.0 | |
| March 24, 2019, 7 a.m. | 1.9 ppb (2) | -0.5 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 46.0 ppb (35) | 0.12 ppb (1) | 13.0 μg/m3 (12) | 3.0 μg/m3 (12) | 35.0 | |
| March 24, 2019, 6 a.m. | 1.6 ppb (1) | -0.4 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 46.0 ppb (35) | 0.12 ppb (1) | 28.0 μg/m3 (25) | 5.0 μg/m3 (21) | 35.0 | |
| March 24, 2019, 5 a.m. | 1.6 ppb (1) | -0.3 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 49.0 ppb (38) | 0.12 ppb (1) | 30.0 μg/m3 (27) | 4.0 μg/m3 (17) | 38.0 | |
| March 24, 2019, 4 a.m. | 2.3 ppb (2) | -0.3 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 48.0 ppb (37) | 0.13 ppb (1) | 13.0 μg/m3 (12) | 4.0 μg/m3 (17) | 37.0 | |
| March 24, 2019, 3 a.m. | 1.8 ppb (2) | -0.4 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 48.0 ppb (37) | 0.12 ppb (1) | 45.0 μg/m3 (41) | 5.0 μg/m3 (21) | 41.0 | |
| March 24, 2019, 2 a.m. | 2.3 ppb (2) | -0.4 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 49.0 ppb (38) | 0.13 ppb (1) | 31.0 μg/m3 (28) | 4.0 μg/m3 (17) | 38.0 | |
| March 24, 2019, 1 a.m. | 2.6 ppb (2) | -0.4 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 62.0 ppb (48) | 0.15 ppb (2) | 18.0 μg/m3 (16) | 4.0 μg/m3 (17) | 48.0 | |
| March 24, 2019, midnight | 2.6 ppb (2) | -0.2 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 64.0 ppb (49) | 0.13 ppb (1) | 25.0 μg/m3 (23) | 5.0 μg/m3 (21) | 49.0 | |
| March 23, 2019, 11 p.m. | 1.7 ppb (2) | -0.3 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 66.0 ppb (51) | 0.13 ppb (1) | 29.0 μg/m3 (26) | 2.0 μg/m3 (8) | 51.0 | |
| March 23, 2019, 10 p.m. | 2.1 ppb (2) | -0.2 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 65.0 ppb (50) | 0.13 ppb (1) | 14.0 μg/m3 (13) | 1.0 μg/m3 (4) | 50.0 | |
| March 23, 2019, 9 p.m. | 2.3 ppb (2) | -0.3 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 67.0 ppb (52) | 0.13 ppb (1) | 27.0 μg/m3 (25) | 5.0 μg/m3 (21) | 52.0 | |
| March 23, 2019, 8 p.m. | 6.3 ppb (6) | 0.2 ppb (0) | N/A | 6.0 ppb (6) | N/A | 0.0 ppb (0) | 71.0 ppb (55) | 0.19 ppb (2) | 34.0 μg/m3 (31) | 9.0 μg/m3 (38) | 55.0 | |
| March 23, 2019, 7 p.m. | 12.9 ppb (12) | 1.2 ppb (1) | N/A | 12.0 ppb (11) | N/A | 0.0 ppb (0) | 65.0 ppb (50) | 0.29 ppb (3) | 42.0 μg/m3 (38) | 10.0 μg/m3 (42) | 50.0 | |
| March 23, 2019, 6 p.m. | 7.8 ppb (7) | 0.8 ppb (1) | N/A | 7.0 ppb (6) | N/A | 0.0 ppb (0) | 58.0 ppb (45) | 0.23 ppb (3) | 27.0 μg/m3 (25) | 3.0 μg/m3 (12) | 45.0 | |
| March 23, 2019, 5 p.m. | 4.2 ppb (4) | 0.3 ppb (0) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 51.0 ppb (39) | 0.15 ppb (2) | 14.0 μg/m3 (13) | 2.0 μg/m3 (8) | 39.0 | |
| March 23, 2019, 4 p.m. | 7.4 ppb (7) | 1.3 ppb (1) | N/A | 6.0 ppb (6) | N/A | 0.0 ppb (0) | 41.0 ppb (32) | 0.19 ppb (2) | 17.0 μg/m3 (15) | 3.0 μg/m3 (12) | 32.0 | |
| March 23, 2019, 3 p.m. | 12.2 ppb (11) | 2.4 ppb (2) | N/A | 10.0 ppb (9) | N/A | 0.0 ppb (0) | 33.0 ppb (25) | 0.23 ppb (3) | 26.0 μg/m3 (24) | 5.0 μg/m3 (21) | 25.0 | |
| March 23, 2019, 2 p.m. | 16.9 ppb (16) | 2.7 ppb (3) | N/A | 14.0 ppb (13) | N/A | 0.0 ppb (0) | 19.0 ppb (15) | 0.27 ppb (3) | 25.0 μg/m3 (23) | 8.0 μg/m3 (33) | 33.0 | |
| March 23, 2019, 1 p.m. | 15.8 ppb (15) | 0.6 ppb (1) | N/A | 15.0 ppb (14) | N/A | 0.0 ppb (0) | 16.0 ppb (12) | 0.26 ppb (3) | 21.0 μg/m3 (19) | 8.0 μg/m3 (33) | 33.0 | |
| March 23, 2019, noon | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 20.0 μg/m3 (18) | 6.0 μg/m3 (25) | 25.0 | |
| March 23, 2019, 11 a.m. | 5.8 ppb (5) | -0.1 ppb (0) | N/A | 6.0 ppb (6) | N/A | 0.0 ppb (0) | 32.0 ppb (25) | 0.17 ppb (2) | 19.0 μg/m3 (17) | 6.0 μg/m3 (25) | 25.0 | |
| March 23, 2019, 10 a.m. | 3.9 ppb (4) | -0.4 ppb (0) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 37.0 ppb (28) | 0.17 ppb (2) | 12.0 μg/m3 (11) | 7.0 μg/m3 (29) | 29.0 | |
| March 23, 2019, 9 a.m. | 3.2 ppb (3) | -0.4 ppb (0) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 41.0 ppb (32) | 0.15 ppb (2) | 12.0 μg/m3 (11) | 6.0 μg/m3 (25) | 32.0 | |
| March 23, 2019, 8 a.m. | 7.8 ppb (7) | -0.2 ppb (0) | N/A | 8.0 ppb (7) | N/A | 0.0 ppb (0) | 35.0 ppb (27) | 0.18 ppb (2) | 24.0 μg/m3 (22) | 6.0 μg/m3 (25) | 27.0 | |
| March 23, 2019, 7 a.m. | 28.0 ppb (26) | 0.6 ppb (1) | N/A | 27.0 ppb (25) | N/A | 0.0 ppb (0) | 14.0 ppb (11) | 0.49 ppb (5) | 77.0 μg/m3 (61) | 21.0 μg/m3 (69) | 69.0 | |
| March 23, 2019, 6 a.m. | 55.9 ppb (52) | 15.1 ppb (14) | N/A | 41.0 ppb (38) | N/A | 1.0 ppb (1) | 5.0 ppb (4) | 0.87 ppb (10) | 149.0 μg/m3 (97) | 36.0 μg/m3 (101) | 101.0 | |
| March 23, 2019, 5 a.m. | 91.5 ppb (90) | 41.9 ppb (39) | N/A | 50.0 ppb (46) | N/A | 1.0 ppb (1) | 2.0 ppb (2) | 1.3 ppb (14) | 188.0 μg/m3 (116) | 33.0 μg/m3 (95) | 116.0 | |
| March 23, 2019, 4 a.m. | 86.6 ppb (85) | 35.6 ppb (33) | N/A | 51.0 ppb (47) | N/A | 1.0 ppb (1) | 2.0 ppb (2) | 1.27 ppb (14) | 122.0 μg/m3 (84) | 19.0 μg/m3 (65) | 85.0 | |
| March 23, 2019, 3 a.m. | 52.9 ppb (49) | 11.2 ppb (10) | N/A | 42.0 ppb (39) | N/A | 0.0 ppb (0) | 10.0 ppb (8) | 0.77 ppb (9) | 63.0 μg/m3 (54) | 15.0 μg/m3 (56) | 56.0 | |
| March 23, 2019, 2 a.m. | 15.2 ppb (14) | 0.6 ppb (1) | N/A | 15.0 ppb (14) | N/A | 0.0 ppb (0) | 42.0 ppb (32) | 0.32 ppb (4) | 32.0 μg/m3 (29) | 4.0 μg/m3 (17) | 32.0 | |
| March 23, 2019, 1 a.m. | 7.7 ppb (7) | 0.2 ppb (0) | N/A | 7.0 ppb (6) | N/A | 0.0 ppb (0) | 59.0 ppb (45) | 0.18 ppb (2) | 19.0 μg/m3 (17) | 0.0 μg/m3 (0) | 45.0 | |
| March 23, 2019, midnight | 3.6 ppb (3) | -0.1 ppb (0) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 64.0 ppb (49) | 0.13 ppb (1) | 11.0 μg/m3 (10) | 2.0 μg/m3 (8) | 49.0 | |
| March 22, 2019, 11 p.m. | 4.0 ppb (4) | -0.1 ppb (0) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 63.0 ppb (48) | 0.13 ppb (1) | 11.0 μg/m3 (10) | 3.0 μg/m3 (12) | 48.0 | |
| March 22, 2019, 10 p.m. | 2.8 ppb (3) | -0.1 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 63.0 ppb (48) | 0.13 ppb (1) | 12.0 μg/m3 (11) | 1.0 μg/m3 (4) | 48.0 | |
| March 22, 2019, 9 p.m. | 2.8 ppb (3) | -0.1 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 62.0 ppb (48) | 0.13 ppb (1) | 7.0 μg/m3 (6) | -1.0 μg/m3 (0) | 48.0 | |
| March 22, 2019, 8 p.m. | 2.5 ppb (2) | -0.1 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 59.0 ppb (45) | 0.13 ppb (1) | 9.0 μg/m3 (8) | 2.0 μg/m3 (8) | 45.0 | |
| March 22, 2019, 7 p.m. | 2.0 ppb (2) | -0.2 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 58.0 ppb (45) | 0.13 ppb (1) | 10.0 μg/m3 (9) | 2.0 μg/m3 (8) | 45.0 | |
| March 22, 2019, 6 p.m. | 1.9 ppb (2) | -0.2 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 54.0 ppb (42) | 0.12 ppb (1) | 11.0 μg/m3 (10) | 2.0 μg/m3 (8) | 42.0 | |
| March 22, 2019, 5 p.m. | 1.6 ppb (1) | -0.2 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 51.0 ppb (39) | 0.12 ppb (1) | 7.0 μg/m3 (6) | 1.0 μg/m3 (4) | 39.0 | |
| March 22, 2019, 4 p.m. | 2.5 ppb (2) | -0.1 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 48.0 ppb (37) | 0.12 ppb (1) | 16.0 μg/m3 (15) | 0.0 μg/m3 (0) | 37.0 | |
| March 22, 2019, 3 p.m. | 5.0 ppb (5) | 0.5 ppb (0) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 41.0 ppb (32) | 0.14 ppb (2) | 29.0 μg/m3 (26) | 3.0 μg/m3 (12) | 32.0 | |
| March 22, 2019, 2 p.m. | 5.0 ppb (5) | 0.1 ppb (0) | N/A | 5.0 ppb (5) | N/A | 0.0 ppb (0) | 41.0 ppb (32) | 0.16 ppb (2) | 42.0 μg/m3 (38) | 4.0 μg/m3 (17) | 38.0 | |
| March 22, 2019, 1 p.m. | 5.3 ppb (5) | -0.1 ppb (0) | N/A | 5.0 ppb (5) | N/A | 0.0 ppb (0) | 38.0 ppb (29) | 0.16 ppb (2) | 20.0 μg/m3 (18) | 1.0 μg/m3 (4) | 29.0 | |
| March 22, 2019, noon | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 μg/m3 (8) | 1.0 μg/m3 (4) | 8.0 | |
| March 22, 2019, 11 a.m. | 2.9 ppb (3) | -0.3 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 40.0 ppb (31) | 0.13 ppb (1) | 14.0 μg/m3 (13) | 3.0 μg/m3 (12) | 31.0 | |
| March 22, 2019, 10 a.m. | 2.3 ppb (2) | -0.5 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 42.0 ppb (32) | 0.13 ppb (1) | 8.0 μg/m3 (7) | 4.0 μg/m3 (17) | 32.0 | |
| March 22, 2019, 9 a.m. | 2.5 ppb (2) | -0.4 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 44.0 ppb (34) | 0.12 ppb (1) | 5.0 μg/m3 (5) | 4.0 μg/m3 (17) | 34.0 | |
| March 22, 2019, 8 a.m. | 2.5 ppb (2) | -0.3 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 44.0 ppb (34) | 0.12 ppb (1) | 6.0 μg/m3 (5) | 2.0 μg/m3 (8) | 34.0 | |
| March 22, 2019, 7 a.m. | 2.2 ppb (2) | -0.4 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 45.0 ppb (35) | 0.12 ppb (1) | 9.0 μg/m3 (8) | 3.0 μg/m3 (12) | 35.0 | |
| March 22, 2019, 6 a.m. | 1.5 ppb (1) | -0.5 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 46.0 ppb (35) | 0.11 ppb (1) | 7.0 μg/m3 (6) | 2.0 μg/m3 (8) | 35.0 | |
| March 22, 2019, 5 a.m. | 1.5 ppb (1) | -0.5 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 49.0 ppb (38) | 0.12 ppb (1) | 5.0 μg/m3 (5) | 2.0 μg/m3 (8) | 38.0 | |
| March 22, 2019, 4 a.m. | 1.7 ppb (2) | -0.4 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 50.0 ppb (38) | 0.12 ppb (1) | 16.0 μg/m3 (15) | 0.0 μg/m3 (0) | 38.0 | |
| March 22, 2019, 3 a.m. | 2.0 ppb (2) | -0.4 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 48.0 ppb (37) | 0.12 ppb (1) | 12.0 μg/m3 (11) | 1.0 μg/m3 (4) | 37.0 | |
| March 22, 2019, 2 a.m. | 2.4 ppb (2) | -0.2 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 45.0 ppb (35) | 0.12 ppb (1) | 15.0 μg/m3 (14) | 3.0 μg/m3 (12) | 35.0 | |
| March 22, 2019, 1 a.m. | 2.8 ppb (3) | -0.2 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 47.0 ppb (36) | 0.12 ppb (1) | 22.0 μg/m3 (20) | 1.0 μg/m3 (4) | 36.0 | |
| March 22, 2019, midnight | 2.6 ppb (2) | 0.0 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 51.0 ppb (39) | 0.12 ppb (1) | 22.0 μg/m3 (20) | 2.0 μg/m3 (8) | 39.0 | |
| March 21, 2019, 11 p.m. | 2.7 ppb (3) | -0.3 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 52.0 ppb (40) | 0.12 ppb (1) | 30.0 μg/m3 (27) | 5.0 μg/m3 (21) | 40.0 | |
| March 21, 2019, 10 p.m. | 3.0 ppb (3) | -0.2 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 55.0 ppb (42) | 0.13 ppb (1) | 21.0 μg/m3 (19) | 4.0 μg/m3 (17) | 42.0 | |
| March 21, 2019, 9 p.m. | 8.9 ppb (8) | 1.7 ppb (2) | N/A | 7.0 ppb (6) | N/A | 0.0 ppb (0) | 50.0 ppb (38) | 0.17 ppb (2) | 29.0 μg/m3 (26) | 5.0 μg/m3 (21) | 38.0 | |
| March 21, 2019, 8 p.m. | 6.4 ppb (6) | 0.5 ppb (0) | N/A | 6.0 ppb (6) | N/A | 0.0 ppb (0) | 50.0 ppb (38) | 0.18 ppb (2) | 25.0 μg/m3 (23) | 5.0 μg/m3 (21) | 38.0 | |
| March 21, 2019, 7 p.m. | 2.6 ppb (2) | 0.0 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 52.0 ppb (40) | 0.12 ppb (1) | 10.0 μg/m3 (9) | N/A | 40.0 | |
| March 21, 2019, 6 p.m. | 2.3 ppb (2) | -0.1 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 51.0 ppb (39) | 0.12 ppb (1) | 13.0 μg/m3 (12) | N/A | 39.0 | |
| March 21, 2019, 5 p.m. | 2.3 ppb (2) | -0.1 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 50.0 ppb (38) | 0.12 ppb (1) | 22.0 μg/m3 (20) | 3.0 μg/m3 (12) | 38.0 | |
| March 21, 2019, 4 p.m. | 2.4 ppb (2) | -0.2 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 49.0 ppb (38) | 0.12 ppb (1) | 30.0 μg/m3 (27) | 3.0 μg/m3 (12) | 38.0 | |
| March 21, 2019, 3 p.m. | 3.2 ppb (3) | -0.1 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 47.0 ppb (36) | 0.12 ppb (1) | 21.0 μg/m3 (19) | 3.0 μg/m3 (12) | 36.0 | |
| March 21, 2019, 2 p.m. | 4.5 ppb (4) | -0.2 ppb (0) | N/A | 5.0 ppb (5) | N/A | 0.0 ppb (0) | 44.0 ppb (34) | 0.15 ppb (2) | 17.0 μg/m3 (15) | 4.0 μg/m3 (17) | 34.0 | |
| March 21, 2019, 1 p.m. | 5.8 ppb (5) | -0.2 ppb (0) | N/A | 6.0 ppb (6) | N/A | 0.0 ppb (0) | 42.0 ppb (32) | 0.15 ppb (2) | 23.0 μg/m3 (21) | 5.0 μg/m3 (21) | 32.0 | |
| March 21, 2019, noon | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 μg/m3 (8) | 1.0 μg/m3 (4) | 8.0 | |
| March 21, 2019, 11 a.m. | 1.6 ppb (1) | -0.4 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 49.0 ppb (38) | 0.11 ppb (1) | 8.0 μg/m3 (7) | 3.0 μg/m3 (12) | 38.0 | |
| March 21, 2019, 10 a.m. | 1.6 ppb (1) | -0.3 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 50.0 ppb (38) | 0.11 ppb (1) | 7.0 μg/m3 (6) | 2.0 μg/m3 (8) | 38.0 | |
| March 21, 2019, 9 a.m. | 1.6 ppb (1) | -0.5 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 50.0 ppb (38) | 0.11 ppb (1) | 4.0 μg/m3 (4) | 0.0 μg/m3 (0) | 38.0 | |
| March 21, 2019, 8 a.m. | 1.6 ppb (1) | -0.3 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 51.0 ppb (39) | 0.12 ppb (1) | 7.0 μg/m3 (6) | 1.0 μg/m3 (4) | 39.0 | |
| March 21, 2019, 7 a.m. | 1.7 ppb (2) | -0.5 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 49.0 ppb (38) | 0.12 ppb (1) | 11.0 μg/m3 (10) | 0.0 μg/m3 (0) | 38.0 | |
| March 21, 2019, 6 a.m. | 1.6 ppb (1) | -0.6 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 49.0 ppb (38) | 0.11 ppb (1) | 10.0 μg/m3 (9) | 0.0 μg/m3 (0) | 38.0 | |
| March 21, 2019, 5 a.m. | 2.3 ppb (2) | -0.3 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 48.0 ppb (37) | 0.12 ppb (1) | 13.0 μg/m3 (12) | 0.0 μg/m3 (0) | 37.0 | |
| March 21, 2019, 4 a.m. | 2.3 ppb (2) | -0.6 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 47.0 ppb (36) | 0.12 ppb (1) | 15.0 μg/m3 (14) | 1.0 μg/m3 (4) | 36.0 | |
| March 21, 2019, 3 a.m. | 2.2 ppb (2) | -0.4 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 48.0 ppb (37) | 0.12 ppb (1) | 22.0 μg/m3 (20) | 1.0 μg/m3 (4) | 37.0 | |
| March 21, 2019, 2 a.m. | 2.0 ppb (2) | -0.5 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 48.0 ppb (37) | 0.12 ppb (1) | N/A | 7.0 μg/m3 (29) | 37.0 | |
| March 21, 2019, 1 a.m. | 2.0 ppb (2) | -0.3 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 49.0 ppb (38) | 0.11 ppb (1) | 311.0 μg/m3 (178) | 14.0 μg/m3 (54) | 178.0 | |
| March 21, 2019, midnight | 2.6 ppb (2) | -0.2 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 51.0 ppb (39) | 0.11 ppb (1) | 121.0 μg/m3 (83) | 7.0 μg/m3 (29) | 83.0 | |
| March 20, 2019, 11 p.m. | 2.5 ppb (2) | -0.1 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 53.0 ppb (41) | 0.11 ppb (1) | 22.0 μg/m3 (20) | 6.0 μg/m3 (25) | 41.0 | |
| March 20, 2019, 10 p.m. | 2.0 ppb (2) | -0.3 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 51.0 ppb (39) | 0.11 ppb (1) | 15.0 μg/m3 (14) | 3.0 μg/m3 (12) | 39.0 | |
| March 20, 2019, 9 p.m. | 2.0 ppb (2) | -0.3 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 49.0 ppb (38) | 0.11 ppb (1) | 26.0 μg/m3 (24) | 3.0 μg/m3 (12) | 38.0 | |
| March 20, 2019, 8 p.m. | 3.2 ppb (3) | 0.0 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 47.0 ppb (36) | 0.12 ppb (1) | 38.0 μg/m3 (35) | 4.0 μg/m3 (17) | 36.0 | |
| March 20, 2019, 7 p.m. | 6.7 ppb (6) | 0.6 ppb (1) | N/A | 6.0 ppb (6) | N/A | 0.0 ppb (0) | 46.0 ppb (35) | 0.15 ppb (2) | 49.0 μg/m3 (45) | 8.0 μg/m3 (33) | 45.0 | |
| March 20, 2019, 6 p.m. | 39.9 ppb (37) | 10.1 ppb (9) | N/A | 30.0 ppb (28) | N/A | 1.0 ppb (1) | 28.0 ppb (22) | 0.5 ppb (6) | 78.0 μg/m3 (62) | 15.0 μg/m3 (56) | 62.0 | |
| March 20, 2019, 5 p.m. | 68.5 ppb (65) | 24.5 ppb (23) | N/A | 44.0 ppb (41) | N/A | 1.0 ppb (1) | 10.0 ppb (8) | 0.94 ppb (10) | 158.0 μg/m3 (102) | 26.0 μg/m3 (80) | 102.0 | |
| March 20, 2019, 4 p.m. | 42.8 ppb (40) | 15.9 ppb (15) | N/A | 27.0 ppb (25) | N/A | 1.0 ppb (1) | 15.0 ppb (12) | 0.77 ppb (9) | 197.0 μg/m3 (121) | 29.0 μg/m3 (86) | 121.0 | |
| March 20, 2019, 3 p.m. | 10.7 ppb (10) | 0.4 ppb (0) | N/A | 10.0 ppb (9) | N/A | 0.0 ppb (0) | 38.0 ppb (29) | 0.21 ppb (2) | 62.0 μg/m3 (54) | 4.0 μg/m3 (17) | 54.0 | |
| March 20, 2019, 2 p.m. | 5.7 ppb (5) | -0.3 ppb (0) | N/A | 6.0 ppb (6) | N/A | 0.0 ppb (0) | 46.0 ppb (35) | 0.15 ppb (2) | 93.0 μg/m3 (69) | 6.0 μg/m3 (25) | 69.0 | |
| March 20, 2019, 1 p.m. | 4.9 ppb (5) | -0.4 ppb (0) | N/A | 5.0 ppb (5) | N/A | 0.0 ppb (0) | 47.0 ppb (36) | 0.12 ppb (1) | 36.0 μg/m3 (33) | 6.0 μg/m3 (25) | 36.0 | |
| March 20, 2019, noon | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 μg/m3 (44) | 9.0 μg/m3 (38) | 44.0 | |
| March 20, 2019, 11 a.m. | 11.4 ppb (11) | 0.0 ppb (0) | N/A | 11.0 ppb (10) | N/A | 0.0 ppb (0) | 18.0 ppb (14) | 0.2 ppb (2) | 44.0 μg/m3 (40) | 9.0 μg/m3 (38) | 40.0 | |
| March 20, 2019, 10 a.m. | 7.3 ppb (7) | -0.2 ppb (0) | N/A | 8.0 ppb (7) | N/A | 0.0 ppb (0) | 26.0 ppb (20) | 0.17 ppb (2) | 40.0 μg/m3 (36) | 6.0 μg/m3 (25) | 36.0 | |
| March 20, 2019, 9 a.m. | 3.9 ppb (4) | -0.3 ppb (0) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 38.0 ppb (29) | 0.11 ppb (1) | 16.0 μg/m3 (15) | 3.0 μg/m3 (12) | 29.0 | |
| March 20, 2019, 8 a.m. | 2.7 ppb (3) | -0.4 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 39.0 ppb (30) | 0.1 ppb (1) | 17.0 μg/m3 (15) | 5.0 μg/m3 (21) | 30.0 | |
| March 20, 2019, 7 a.m. | 4.8 ppb (4) | -0.3 ppb (0) | N/A | 5.0 ppb (5) | N/A | 0.0 ppb (0) | 31.0 ppb (24) | 0.12 ppb (1) | 14.0 μg/m3 (13) | 5.0 μg/m3 (21) | 24.0 | |
| March 20, 2019, 6 a.m. | 10.1 ppb (9) | -0.3 ppb (0) | N/A | 10.0 ppb (9) | N/A | 1.0 ppb (1) | 29.0 ppb (22) | 0.16 ppb (2) | 22.0 μg/m3 (20) | 6.0 μg/m3 (25) | 25.0 | |
| March 20, 2019, 5 a.m. | 11.0 ppb (10) | 0.2 ppb (0) | N/A | 11.0 ppb (10) | N/A | 0.0 ppb (0) | 32.0 ppb (25) | 0.18 ppb (2) | 33.0 μg/m3 (30) | 7.0 μg/m3 (29) | 30.0 | |
| March 20, 2019, 4 a.m. | 21.0 ppb (19) | 1.3 ppb (1) | N/A | 20.0 ppb (19) | N/A | 1.0 ppb (1) | 27.0 ppb (21) | 0.23 ppb (3) | 42.0 μg/m3 (38) | 10.0 μg/m3 (42) | 42.0 | |
| March 20, 2019, 3 a.m. | 20.7 ppb (19) | 1.7 ppb (2) | N/A | 19.0 ppb (18) | N/A | 1.0 ppb (1) | 29.0 ppb (22) | 0.21 ppb (2) | 43.0 μg/m3 (39) | 8.0 μg/m3 (33) | 39.0 | |
| March 20, 2019, 2 a.m. | 16.8 ppb (16) | 1.6 ppb (1) | N/A | 15.0 ppb (14) | N/A | 1.0 ppb (1) | 33.0 ppb (25) | 0.18 ppb (2) | 42.0 μg/m3 (38) | 10.0 μg/m3 (42) | 42.0 | |
| March 20, 2019, 1 a.m. | 10.2 ppb (9) | 1.2 ppb (1) | N/A | 9.0 ppb (8) | N/A | 0.0 ppb (0) | 42.0 ppb (32) | 0.16 ppb (2) | 34.0 μg/m3 (31) | 3.0 μg/m3 (12) | 32.0 | |
| March 20, 2019, midnight | 7.3 ppb (7) | 1.0 ppb (1) | N/A | 6.0 ppb (6) | N/A | 0.0 ppb (0) | 48.0 ppb (37) | 0.14 ppb (2) | 33.0 μg/m3 (30) | 2.0 μg/m3 (8) | 37.0 | |
| March 19, 2019, 11 p.m. | 6.1 ppb (6) | 1.0 ppb (1) | N/A | 5.0 ppb (5) | N/A | 0.0 ppb (0) | 49.0 ppb (38) | 0.14 ppb (2) | 35.0 μg/m3 (32) | 3.0 μg/m3 (12) | 38.0 | |
| March 19, 2019, 10 p.m. | 6.4 ppb (6) | 1.1 ppb (1) | N/A | 5.0 ppb (5) | N/A | 0.0 ppb (0) | 50.0 ppb (38) | 0.12 ppb (1) | 45.0 μg/m3 (41) | 3.0 μg/m3 (12) | 41.0 | |
| March 19, 2019, 9 p.m. | 5.7 ppb (5) | 0.9 ppb (1) | N/A | 5.0 ppb (5) | N/A | 1.0 ppb (1) | 51.0 ppb (39) | 0.12 ppb (1) | 41.0 μg/m3 (37) | 3.0 μg/m3 (12) | 39.0 | |
| March 19, 2019, 8 p.m. | 6.4 ppb (6) | 0.6 ppb (1) | N/A | 6.0 ppb (6) | N/A | 3.0 ppb (4) | 51.0 ppb (39) | 0.13 ppb (1) | 44.0 μg/m3 (40) | 4.0 μg/m3 (17) | 40.0 | |
| March 19, 2019, 7 p.m. | 17.8 ppb (16) | 3.2 ppb (3) | N/A | 14.0 ppb (13) | N/A | 3.0 ppb (4) | 55.0 ppb (42) | 0.26 ppb (3) | N/A | N/A | 42.0 | |
| March 19, 2019, 6 p.m. | 18.2 ppb (17) | 2.2 ppb (2) | N/A | 16.0 ppb (15) | N/A | 2.0 ppb (3) | 55.0 ppb (42) | 0.38 ppb (4) | N/A | N/A | 42.0 | |
| March 19, 2019, 5 p.m. | 9.7 ppb (9) | 1.3 ppb (1) | N/A | 8.0 ppb (7) | N/A | 1.0 ppb (1) | 44.0 ppb (34) | 0.19 ppb (2) | N/A | N/A | 34.0 | |
| March 19, 2019, 4 p.m. | 14.4 ppb (13) | 2.9 ppb (3) | N/A | 12.0 ppb (11) | N/A | 1.0 ppb (1) | 35.0 ppb (27) | 0.24 ppb (3) | N/A | N/A | 27.0 | |
| March 19, 2019, 3 p.m. | 47.3 ppb (44) | 25.2 ppb (23) | N/A | 22.0 ppb (20) | N/A | 1.0 ppb (1) | 17.0 ppb (13) | 0.62 ppb (7) | N/A | N/A | 44.0 | |
| March 19, 2019, 2 p.m. | 44.6 ppb (41) | 26.8 ppb (25) | N/A | 18.0 ppb (17) | N/A | 1.0 ppb (1) | 4.0 ppb (3) | 0.71 ppb (8) | N/A | N/A | 41.0 | |
| March 19, 2019, 1 p.m. | 42.4 ppb (39) | 15.2 ppb (14) | N/A | 27.0 ppb (25) | N/A | 1.0 ppb (1) | 3.0 ppb (2) | 0.62 ppb (7) | N/A | N/A | 39.0 | |
| March 19, 2019, noon | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| March 19, 2019, 11 a.m. | 38.3 ppb (35) | 6.9 ppb (6) | N/A | 31.0 ppb (29) | N/A | 1.0 ppb (1) | 2.0 ppb (2) | 0.64 ppb (7) | N/A | N/A | 35.0 | |
| March 19, 2019, 10 a.m. | 21.4 ppb (20) | 1.3 ppb (1) | N/A | 20.0 ppb (19) | N/A | 0.0 ppb (0) | 10.0 ppb (8) | 0.36 ppb (4) | N/A | N/A | 20.0 | |
| March 19, 2019, 9 a.m. | 9.8 ppb (9) | -0.2 ppb (0) | N/A | 10.0 ppb (9) | N/A | 0.0 ppb (0) | 21.0 ppb (16) | 0.17 ppb (2) | N/A | N/A | 16.0 | |
| March 19, 2019, 8 a.m. | 13.2 ppb (12) | 0.3 ppb (0) | N/A | 13.0 ppb (12) | N/A | 0.0 ppb (0) | 21.0 ppb (16) | 0.27 ppb (3) | N/A | N/A | 16.0 | |
| March 19, 2019, 7 a.m. | 11.9 ppb (11) | -0.1 ppb (0) | N/A | 12.0 ppb (11) | N/A | 1.0 ppb (1) | 28.0 ppb (22) | 0.2 ppb (2) | N/A | N/A | 22.0 | |
| March 19, 2019, 6 a.m. | 24.9 ppb (23) | 1.0 ppb (1) | N/A | 24.0 ppb (22) | N/A | 1.0 ppb (1) | 17.0 ppb (13) | 0.37 ppb (4) | N/A | N/A | 23.0 | |
| March 19, 2019, 5 a.m. | 33.8 ppb (31) | 1.1 ppb (1) | N/A | 33.0 ppb (31) | N/A | 1.0 ppb (1) | 12.0 ppb (9) | 0.51 ppb (6) | N/A | N/A | 31.0 | |
| March 19, 2019, 4 a.m. | 39.8 ppb (37) | 2.2 ppb (2) | N/A | 38.0 ppb (35) | N/A | 1.0 ppb (1) | 10.0 ppb (8) | 0.57 ppb (6) | N/A | N/A | 37.0 | |
| March 19, 2019, 3 a.m. | 29.5 ppb (27) | 2.6 ppb (2) | N/A | 27.0 ppb (25) | N/A | 0.0 ppb (0) | 21.0 ppb (16) | 0.45 ppb (5) | N/A | N/A | 27.0 | |
| March 19, 2019, 2 a.m. | 17.6 ppb (16) | 1.8 ppb (2) | N/A | 16.0 ppb (15) | N/A | 0.0 ppb (0) | 31.0 ppb (24) | 0.34 ppb (4) | N/A | N/A | 24.0 | |
| March 19, 2019, 1 a.m. | 9.2 ppb (9) | 1.1 ppb (1) | N/A | 8.0 ppb (7) | N/A | 1.0 ppb (1) | 48.0 ppb (37) | 0.18 ppb (2) | N/A | N/A | 37.0 | |
| March 19, 2019, midnight | 5.0 ppb (5) | 0.7 ppb (1) | N/A | 4.0 ppb (4) | N/A | 1.0 ppb (1) | 54.0 ppb (42) | 0.14 ppb (2) | N/A | N/A | 42.0 | |
| March 18, 2019, 11 p.m. | 5.5 ppb (5) | 0.7 ppb (1) | N/A | 5.0 ppb (5) | N/A | 1.0 ppb (1) | 53.0 ppb (41) | 0.12 ppb (1) | N/A | N/A | 41.0 | |
| March 18, 2019, 10 p.m. | 7.2 ppb (7) | 0.9 ppb (1) | N/A | 6.0 ppb (6) | N/A | 0.0 ppb (0) | 55.0 ppb (42) | 0.13 ppb (1) | N/A | N/A | 42.0 | |
| March 18, 2019, 9 p.m. | 3.9 ppb (4) | 0.3 ppb (0) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 58.0 ppb (45) | 0.11 ppb (1) | N/A | N/A | 45.0 | |
| March 18, 2019, 8 p.m. | 5.5 ppb (5) | 0.7 ppb (1) | N/A | 5.0 ppb (5) | N/A | 0.0 ppb (0) | 59.0 ppb (45) | 0.14 ppb (2) | N/A | N/A | 45.0 | |
| March 18, 2019, 7 p.m. | 6.2 ppb (6) | 0.3 ppb (0) | N/A | 6.0 ppb (6) | N/A | 0.0 ppb (0) | 60.0 ppb (46) | 0.17 ppb (2) | N/A | N/A | 46.0 | |
| March 18, 2019, 6 p.m. | 5.9 ppb (5) | 0.5 ppb (0) | N/A | 5.0 ppb (5) | N/A | 0.0 ppb (0) | 50.0 ppb (38) | 0.14 ppb (2) | N/A | N/A | 38.0 | |
| March 18, 2019, 5 p.m. | 7.2 ppb (7) | 0.8 ppb (1) | N/A | 6.0 ppb (6) | N/A | 0.0 ppb (0) | 43.0 ppb (33) | 0.14 ppb (2) | N/A | N/A | 33.0 | |
| March 18, 2019, 4 p.m. | 8.5 ppb (8) | 1.6 ppb (1) | N/A | 7.0 ppb (6) | N/A | 0.0 ppb (0) | 35.0 ppb (27) | 0.15 ppb (2) | N/A | N/A | 27.0 | |
| March 18, 2019, 3 p.m. | 17.6 ppb (16) | 4.3 ppb (4) | N/A | 13.0 ppb (12) | N/A | 0.0 ppb (0) | 25.0 ppb (19) | 0.19 ppb (2) | N/A | N/A | 19.0 | |
| March 18, 2019, 2 p.m. | 24.1 ppb (22) | 4.1 ppb (4) | N/A | 20.0 ppb (19) | N/A | 0.0 ppb (0) | 16.0 ppb (12) | 0.32 ppb (4) | N/A | N/A | 22.0 | |
| March 18, 2019, 1 p.m. | 33.4 ppb (31) | 10.2 ppb (9) | N/A | 23.0 ppb (21) | N/A | 0.0 ppb (0) | 9.0 ppb (7) | 0.33 ppb (4) | N/A | N/A | 31.0 | |
| March 18, 2019, noon | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| March 18, 2019, 11 a.m. | 13.3 ppb (12) | 0.0 ppb (0) | N/A | 13.0 ppb (12) | N/A | 0.0 ppb (0) | 20.0 ppb (15) | 0.16 ppb (2) | N/A | N/A | 15.0 | |
| March 18, 2019, 10 a.m. | 12.3 ppb (11) | 0.0 ppb (0) | N/A | 12.0 ppb (11) | N/A | 0.0 ppb (0) | 20.0 ppb (15) | 0.18 ppb (2) | N/A | N/A | 15.0 | |
| March 18, 2019, 9 a.m. | 8.8 ppb (8) | -0.2 ppb (0) | N/A | 9.0 ppb (8) | N/A | 0.0 ppb (0) | 24.0 ppb (18) | 0.16 ppb (2) | N/A | N/A | 18.0 | |
| March 18, 2019, 8 a.m. | 12.0 ppb (11) | 0.0 ppb (0) | N/A | 12.0 ppb (11) | N/A | 0.0 ppb (0) | 24.0 ppb (18) | 0.17 ppb (2) | N/A | N/A | 18.0 |