Los Angeles (Central City E) CA, US: 34.066429, -118.226755
| Date Observed (UTC) | NOX | NO | NOY | NO2 | NO2Y | SO2 | OZONE | CO | PM10 | PM2.5 | AQI | AQI/500 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| March 30, 2020, 2 a.m. | 2.8 ppb (3) | -0.5 ppb (0) | 3.1 ppb (3) | 3.0 ppb (3) | 3.1 ppb (3) | 0.0 ppb (0) | 33.0 ppb (25) | 0.18 ppb (2) | 24.0 μg/m3 (22) | 7.0 μg/m3 (29) | 29.0 | |
| March 30, 2020, 1 a.m. | 1.8 ppb (2) | -0.6 ppb (0) | 2.5 ppb (2) | 2.0 ppb (2) | 2.4 ppb (2) | 0.0 ppb (0) | 36.0 ppb (28) | 0.16 ppb (2) | 22.0 μg/m3 (20) | 7.0 μg/m3 (29) | 29.0 | |
| March 30, 2020, midnight | 0.8 ppb (1) | -0.6 ppb (0) | 1.6 ppb (1) | 1.0 ppb (1) | 1.4 ppb (1) | 0.0 ppb (0) | 39.0 ppb (30) | 0.14 ppb (2) | 22.0 μg/m3 (20) | 6.0 μg/m3 (25) | 30.0 | |
| March 29, 2020, 11 p.m. | 0.5 ppb (0) | -0.6 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 41.0 ppb (32) | 0.14 ppb (2) | 22.0 μg/m3 (20) | 6.0 μg/m3 (25) | 32.0 | |
| March 29, 2020, 10 p.m. | 1.3 ppb (1) | -0.4 ppb (0) | 2.6 ppb (2) | 2.0 ppb (2) | 2.2 ppb (2) | 0.0 ppb (0) | 42.0 ppb (32) | 0.14 ppb (2) | 17.0 μg/m3 (15) | 5.0 μg/m3 (21) | 32.0 | |
| March 29, 2020, 9 p.m. | 2.0 ppb (2) | -0.3 ppb (0) | 3.2 ppb (3) | 2.0 ppb (2) | 2.8 ppb (3) | 0.0 ppb (0) | 43.0 ppb (33) | 0.16 ppb (2) | 19.0 μg/m3 (17) | 6.0 μg/m3 (25) | 33.0 | |
| March 29, 2020, 8 p.m. | 2.8 ppb (3) | -0.2 ppb (0) | 4.1 ppb (4) | 3.0 ppb (3) | 3.6 ppb (3) | 0.0 ppb (0) | 43.0 ppb (33) | 0.16 ppb (2) | 27.0 μg/m3 (25) | 10.0 μg/m3 (42) | 42.0 | |
| March 29, 2020, 7 p.m. | 4.3 ppb (4) | 0.1 ppb (0) | 5.8 ppb (5) | 4.0 ppb (4) | 4.9 ppb (5) | 0.0 ppb (0) | 41.0 ppb (32) | 0.18 ppb (2) | 26.0 μg/m3 (24) | 13.0 μg/m3 (52) | 52.0 | |
| March 29, 2020, 6 p.m. | 5.3 ppb (5) | 0.6 ppb (1) | 6.7 ppb (6) | 5.0 ppb (5) | 5.2 ppb (5) | 0.0 ppb (0) | 37.0 ppb (28) | 0.16 ppb (2) | 23.0 μg/m3 (21) | 9.0 μg/m3 (38) | 38.0 | |
| March 29, 2020, 5 p.m. | 5.6 ppb (5) | 1.1 ppb (1) | 6.2 ppb (6) | 4.0 ppb (4) | 4.4 ppb (4) | 0.0 ppb (0) | 35.0 ppb (27) | 0.16 ppb (2) | 22.0 μg/m3 (20) | 11.0 μg/m3 (46) | 46.0 | |
| March 29, 2020, 4 p.m. | 4.3 ppb (4) | 0.4 ppb (0) | 5.5 ppb (5) | 4.0 ppb (4) | 4.3 ppb (4) | 0.0 ppb (0) | 32.0 ppb (25) | 0.16 ppb (2) | 28.0 μg/m3 (25) | 8.0 μg/m3 (33) | 33.0 | |
| March 29, 2020, 3 p.m. | 9.0 ppb (8) | 1.8 ppb (2) | 10.0 ppb (9) | 7.0 ppb (6) | 7.5 ppb (7) | 0.0 ppb (0) | 22.0 ppb (17) | 0.23 ppb (3) | 27.0 μg/m3 (25) | 11.0 μg/m3 (46) | 46.0 | |
| March 29, 2020, 2 p.m. | 17.7 ppb (16) | 4.8 ppb (4) | 18.3 ppb (17) | 13.0 ppb (12) | 13.4 ppb (12) | 0.0 ppb (0) | 10.0 ppb (8) | 0.35 ppb (4) | 33.0 μg/m3 (30) | 13.0 μg/m3 (52) | 52.0 | |
| March 29, 2020, 1 p.m. | 19.7 ppb (18) | 2.5 ppb (2) | 19.1 ppb (18) | 17.0 ppb (16) | 16.6 ppb (15) | 0.0 ppb (0) | 3.0 ppb (2) | 0.43 ppb (5) | 25.0 μg/m3 (23) | 10.0 μg/m3 (42) | 42.0 | |
| March 29, 2020, noon | 16.5 ppb (15) | 0.9 ppb (1) | 17.0 ppb (16) | 16.0 ppb (15) | 16.7 ppb (15) | 0.0 ppb (0) | 6.0 ppb (5) | 0.36 ppb (4) | 23.0 μg/m3 (21) | 8.0 μg/m3 (33) | 33.0 | |
| March 29, 2020, 11 a.m. | 14.0 ppb (13) | 0.3 ppb (0) | 17.1 ppb (16) | 14.0 ppb (13) | 16.4 ppb (15) | 0.0 ppb (0) | 9.0 ppb (7) | 0.35 ppb (4) | 20.0 μg/m3 (18) | 8.0 μg/m3 (33) | 33.0 | |
| March 29, 2020, 10 a.m. | 14.1 ppb (13) | 0.2 ppb (0) | 14.8 ppb (14) | 14.0 ppb (13) | 14.7 ppb (14) | 0.0 ppb (0) | 8.0 ppb (6) | 0.35 ppb (4) | 18.0 μg/m3 (16) | 10.0 μg/m3 (42) | 42.0 | |
| March 29, 2020, 9 a.m. | 19.3 ppb (18) | 2.6 ppb (2) | 16.6 ppb (15) | 17.0 ppb (16) | 16.2 ppb (15) | 0.0 ppb (0) | 7.0 ppb (5) | 0.4 ppb (4) | 26.0 μg/m3 (24) | 10.0 μg/m3 (42) | 42.0 | |
| March 29, 2020, 8 a.m. | 18.1 ppb (17) | 0.5 ppb (0) | 24.4 ppb (23) | 18.0 ppb (17) | 22.1 ppb (20) | 0.0 ppb (0) | 7.0 ppb (5) | 0.45 ppb (5) | 25.0 μg/m3 (23) | 14.0 μg/m3 (54) | 54.0 | |
| March 29, 2020, 7 a.m. | 13.9 ppb (13) | 0.1 ppb (0) | 16.9 ppb (16) | 14.0 ppb (13) | 16.7 ppb (15) | 0.0 ppb (0) | 13.0 ppb (10) | 0.43 ppb (5) | 24.0 μg/m3 (22) | 10.0 μg/m3 (42) | 42.0 | |
| March 29, 2020, 6 a.m. | 11.1 ppb (10) | 0.0 ppb (0) | 12.4 ppb (11) | 11.0 ppb (10) | 12.4 ppb (11) | 0.0 ppb (0) | 18.0 ppb (14) | 0.37 ppb (4) | 26.0 μg/m3 (24) | 10.0 μg/m3 (42) | 42.0 | |
| March 29, 2020, 5 a.m. | 8.4 ppb (8) | -0.3 ppb (0) | 9.9 ppb (9) | 9.0 ppb (8) | 9.9 ppb (9) | 0.0 ppb (0) | 27.0 ppb (21) | 0.27 ppb (3) | 23.0 μg/m3 (21) | 10.0 μg/m3 (42) | 42.0 | |
| March 29, 2020, 4 a.m. | 4.8 ppb (4) | -0.5 ppb (0) | 6.0 ppb (6) | 5.0 ppb (5) | 6.0 ppb (6) | 0.0 ppb (0) | 35.0 ppb (27) | 0.22 ppb (2) | 24.0 μg/m3 (22) | 7.0 μg/m3 (29) | 29.0 | |
| March 29, 2020, 3 a.m. | 3.2 ppb (3) | -0.7 ppb (0) | 4.2 ppb (4) | 4.0 ppb (4) | 4.2 ppb (4) | 0.0 ppb (0) | 38.0 ppb (29) | 0.19 ppb (2) | 17.0 μg/m3 (15) | 5.0 μg/m3 (21) | 29.0 | |
| March 29, 2020, 2 a.m. | 3.7 ppb (3) | -0.7 ppb (0) | 4.6 ppb (4) | 4.0 ppb (4) | 4.6 ppb (4) | 0.0 ppb (0) | 39.0 ppb (30) | 0.19 ppb (2) | 17.0 μg/m3 (15) | 4.0 μg/m3 (17) | 30.0 | |
| March 29, 2020, 1 a.m. | 2.5 ppb (2) | -0.6 ppb (0) | 3.7 ppb (3) | 3.0 ppb (3) | 3.6 ppb (3) | 0.0 ppb (0) | 42.0 ppb (32) | 0.16 ppb (2) | 17.0 μg/m3 (15) | 6.0 μg/m3 (25) | 32.0 | |
| March 29, 2020, midnight | 2.3 ppb (2) | -0.5 ppb (0) | 3.4 ppb (3) | 3.0 ppb (3) | 3.1 ppb (3) | 0.0 ppb (0) | 44.0 ppb (34) | 0.16 ppb (2) | 14.0 μg/m3 (13) | 5.0 μg/m3 (21) | 34.0 | |
| March 28, 2020, 11 p.m. | 2.1 ppb (2) | -0.4 ppb (0) | 3.3 ppb (3) | 3.0 ppb (3) | 2.9 ppb (3) | 0.0 ppb (0) | 44.0 ppb (34) | 0.15 ppb (2) | 21.0 μg/m3 (19) | 5.0 μg/m3 (21) | 34.0 | |
| March 28, 2020, 10 p.m. | 3.6 ppb (3) | -0.1 ppb (0) | 4.9 ppb (5) | 4.0 ppb (4) | 4.1 ppb (4) | 0.0 ppb (0) | 43.0 ppb (33) | 0.17 ppb (2) | 22.0 μg/m3 (20) | 6.0 μg/m3 (25) | 33.0 | |
| March 28, 2020, 9 p.m. | 5.7 ppb (5) | 0.4 ppb (0) | 7.0 ppb (6) | 5.0 ppb (5) | 5.6 ppb (5) | 0.0 ppb (0) | 41.0 ppb (32) | 0.2 ppb (2) | 21.0 μg/m3 (19) | 7.0 μg/m3 (29) | 32.0 | |
| March 28, 2020, 8 p.m. | 5.2 ppb (5) | 0.3 ppb (0) | 6.7 ppb (6) | 5.0 ppb (5) | 5.4 ppb (5) | 0.0 ppb (0) | 40.0 ppb (31) | 0.19 ppb (2) | 19.0 μg/m3 (17) | 6.0 μg/m3 (25) | 31.0 | |
| March 28, 2020, 7 p.m. | 7.4 ppb (7) | 1.2 ppb (1) | 8.9 ppb (8) | 6.0 ppb (6) | 6.6 ppb (6) | 0.0 ppb (0) | 36.0 ppb (28) | 0.19 ppb (2) | 25.0 μg/m3 (23) | 9.0 μg/m3 (38) | 38.0 | |
| March 28, 2020, 6 p.m. | 6.3 ppb (6) | 1.1 ppb (1) | 7.5 ppb (7) | 5.0 ppb (5) | 5.4 ppb (5) | 0.0 ppb (0) | 34.0 ppb (26) | 0.16 ppb (2) | 23.0 μg/m3 (21) | 8.0 μg/m3 (33) | 33.0 | |
| March 28, 2020, 5 p.m. | 8.4 ppb (8) | 3.6 ppb (3) | 10.7 ppb (10) | 5.0 ppb (5) | 5.2 ppb (5) | 0.0 ppb (0) | 31.0 ppb (24) | 0.15 ppb (2) | 24.0 μg/m3 (22) | 8.0 μg/m3 (33) | 33.0 | |
| March 28, 2020, 4 p.m. | 7.7 ppb (7) | 1.4 ppb (1) | 8.9 ppb (8) | 6.0 ppb (6) | 6.3 ppb (6) | 0.0 ppb (0) | 27.0 ppb (21) | 0.17 ppb (2) | 18.0 μg/m3 (16) | 8.0 μg/m3 (33) | 33.0 | |
| March 28, 2020, 3 p.m. | 12.3 ppb (11) | 2.5 ppb (2) | 13.2 ppb (12) | 10.0 ppb (9) | 9.7 ppb (9) | 0.0 ppb (0) | 20.0 ppb (15) | 0.2 ppb (2) | 18.0 μg/m3 (16) | 7.0 μg/m3 (29) | 29.0 | |
| March 28, 2020, 2 p.m. | 14.9 ppb (14) | 2.4 ppb (2) | 15.9 ppb (15) | 12.0 ppb (11) | 13.1 ppb (12) | 0.0 ppb (0) | 15.0 ppb (12) | 0.22 ppb (2) | 22.0 μg/m3 (20) | 9.0 μg/m3 (38) | 38.0 | |
| March 28, 2020, 1 p.m. | 12.5 ppb (12) | 0.4 ppb (0) | 16.3 ppb (15) | 12.0 ppb (11) | 13.3 ppb (12) | 0.0 ppb (0) | 16.0 ppb (12) | 0.21 ppb (2) | 18.0 μg/m3 (16) | 5.0 μg/m3 (21) | 21.0 | |
| March 28, 2020, noon | 9.9 ppb (9) | 0.2 ppb (0) | 9.1 ppb (8) | 10.0 ppb (9) | 8.8 ppb (8) | 0.0 ppb (0) | 19.0 ppb (15) | 0.18 ppb (2) | 17.0 μg/m3 (15) | 5.0 μg/m3 (21) | 21.0 | |
| March 28, 2020, 11 a.m. | 13.6 ppb (13) | 2.5 ppb (2) | 12.0 ppb (11) | 11.0 ppb (10) | 10.0 ppb (9) | 0.0 ppb (0) | 16.0 ppb (12) | 0.19 ppb (2) | 21.0 μg/m3 (19) | 5.0 μg/m3 (21) | 21.0 | |
| March 28, 2020, 10 a.m. | 7.4 ppb (7) | -0.4 ppb (0) | 7.4 ppb (7) | 8.0 ppb (7) | 7.4 ppb (7) | 0.0 ppb (0) | 21.0 ppb (16) | 0.16 ppb (2) | 19.0 μg/m3 (17) | 6.0 μg/m3 (25) | 25.0 | |
| March 28, 2020, 9 a.m. | 6.7 ppb (6) | -0.4 ppb (0) | 7.1 ppb (7) | 7.0 ppb (6) | 7.1 ppb (7) | 0.0 ppb (0) | 21.0 ppb (16) | 0.16 ppb (2) | 19.0 μg/m3 (17) | 9.0 μg/m3 (38) | 38.0 | |
| March 28, 2020, 8 a.m. | 15.0 ppb (14) | 1.5 ppb (1) | 16.7 ppb (15) | 13.0 ppb (12) | 13.9 ppb (13) | 0.0 ppb (0) | 16.0 ppb (12) | 0.21 ppb (2) | 22.0 μg/m3 (20) | 12.0 μg/m3 (50) | 50.0 | |
| March 28, 2020, 7 a.m. | 11.2 ppb (10) | -0.1 ppb (0) | 12.3 ppb (11) | 11.0 ppb (10) | 12.2 ppb (11) | 0.0 ppb (0) | 18.0 ppb (14) | 0.24 ppb (3) | 30.0 μg/m3 (27) | 13.0 μg/m3 (52) | 52.0 | |
| March 28, 2020, 6 a.m. | 13.4 ppb (12) | 0.1 ppb (0) | 15.8 ppb (15) | 13.0 ppb (12) | 15.6 ppb (14) | 0.0 ppb (0) | 15.0 ppb (12) | 0.3 ppb (3) | 29.0 μg/m3 (26) | 12.0 μg/m3 (50) | 50.0 | |
| March 28, 2020, 5 a.m. | 18.4 ppb (17) | 1.4 ppb (1) | 21.1 ppb (20) | 17.0 ppb (16) | 19.1 ppb (18) | 0.0 ppb (0) | 15.0 ppb (12) | 0.3 ppb (3) | 31.0 μg/m3 (28) | 11.0 μg/m3 (46) | 46.0 | |
| March 28, 2020, 4 a.m. | 19.5 ppb (18) | 2.1 ppb (2) | 22.0 ppb (20) | 17.0 ppb (16) | 19.3 ppb (18) | 0.0 ppb (0) | 18.0 ppb (14) | 0.26 ppb (3) | 36.0 μg/m3 (33) | 9.0 μg/m3 (38) | 38.0 | |
| March 28, 2020, 3 a.m. | 10.2 ppb (9) | -0.4 ppb (0) | 11.4 ppb (11) | 11.0 ppb (10) | 11.4 ppb (11) | 0.0 ppb (0) | 25.0 ppb (19) | 0.17 ppb (2) | 30.0 μg/m3 (27) | 9.0 μg/m3 (38) | 38.0 | |
| March 28, 2020, 2 a.m. | 4.9 ppb (5) | -0.6 ppb (0) | 5.8 ppb (5) | 6.0 ppb (6) | 5.7 ppb (5) | 0.0 ppb (0) | 32.0 ppb (25) | 0.13 ppb (1) | 19.0 μg/m3 (17) | 10.0 μg/m3 (42) | 42.0 | |
| March 28, 2020, 1 a.m. | 2.2 ppb (2) | -0.6 ppb (0) | 3.1 ppb (3) | 3.0 ppb (3) | 2.9 ppb (3) | 0.0 ppb (0) | 37.0 ppb (28) | 0.12 ppb (1) | 17.0 μg/m3 (15) | 6.0 μg/m3 (25) | 28.0 | |
| March 28, 2020, midnight | 3.0 ppb (3) | -0.3 ppb (0) | 4.0 ppb (4) | 3.0 ppb (3) | 3.3 ppb (3) | 0.0 ppb (0) | 39.0 ppb (30) | 0.12 ppb (1) | 11.0 μg/m3 (10) | 2.0 μg/m3 (8) | 30.0 | |
| March 27, 2020, 11 p.m. | 2.0 ppb (2) | -0.3 ppb (0) | 2.8 ppb (3) | 2.0 ppb (2) | 2.2 ppb (2) | 0.0 ppb (0) | 40.0 ppb (31) | 0.13 ppb (1) | 10.0 μg/m3 (9) | 2.0 μg/m3 (8) | 31.0 | |
| March 27, 2020, 10 p.m. | 2.9 ppb (3) | 0.1 ppb (0) | 3.8 ppb (4) | 3.0 ppb (3) | 2.8 ppb (3) | 0.0 ppb (0) | 40.0 ppb (31) | 0.13 ppb (1) | 14.0 μg/m3 (13) | 4.0 μg/m3 (17) | 31.0 | |
| March 27, 2020, 9 p.m. | 3.4 ppb (3) | 0.2 ppb (0) | 4.4 ppb (4) | 3.0 ppb (3) | 3.2 ppb (3) | 0.0 ppb (0) | 39.0 ppb (30) | 0.14 ppb (2) | 14.0 μg/m3 (13) | 5.0 μg/m3 (21) | 30.0 | |
| March 27, 2020, 8 p.m. | 4.1 ppb (4) | 0.4 ppb (0) | 5.1 ppb (5) | 4.0 ppb (4) | 3.7 ppb (3) | 0.0 ppb (0) | 38.0 ppb (29) | 0.14 ppb (2) | 11.0 μg/m3 (10) | 6.0 μg/m3 (25) | 29.0 | |
| March 27, 2020, 7 p.m. | 3.3 ppb (3) | 0.2 ppb (0) | 4.2 ppb (4) | 3.0 ppb (3) | 3.1 ppb (3) | 0.0 ppb (0) | 39.0 ppb (30) | 0.15 ppb (2) | 9.0 μg/m3 (8) | 3.0 μg/m3 (12) | 30.0 | |
| March 27, 2020, 6 p.m. | 3.7 ppb (3) | 0.4 ppb (0) | 4.4 ppb (4) | 3.0 ppb (3) | 3.2 ppb (3) | 0.0 ppb (0) | 37.0 ppb (28) | 0.16 ppb (2) | 8.0 μg/m3 (7) | 3.0 μg/m3 (12) | 28.0 | |
| March 27, 2020, 5 p.m. | 3.8 ppb (4) | 0.5 ppb (0) | 4.3 ppb (4) | 3.0 ppb (3) | 3.0 ppb (3) | N/A | 35.0 ppb (27) | N/A | 8.0 μg/m3 (7) | 5.0 μg/m3 (21) | 27.0 | |
| March 27, 2020, 4 p.m. | 7.7 ppb (7) | 1.8 ppb (2) | 8.3 ppb (8) | 6.0 ppb (6) | 5.8 ppb (5) | N/A | 31.0 ppb (24) | N/A | 9.0 μg/m3 (8) | 6.0 μg/m3 (25) | 25.0 | |
| March 27, 2020, 3 p.m. | 26.1 ppb (24) | 9.7 ppb (9) | 27.1 ppb (25) | 16.0 ppb (15) | 17.0 ppb (16) | N/A | 20.0 ppb (15) | N/A | 38.0 μg/m3 (35) | 7.0 μg/m3 (29) | 35.0 | |
| March 27, 2020, 2 p.m. | 69.3 ppb (66) | 41.5 ppb (38) | 72.3 ppb (69) | 28.0 ppb (26) | 29.3 ppb (27) | 0.0 ppb (0) | 3.0 ppb (2) | 0.61 ppb (7) | 30.0 μg/m3 (27) | 7.0 μg/m3 (29) | 69.0 | |
| March 27, 2020, 1 p.m. | 56.1 ppb (52) | 29.0 ppb (27) | 53.2 ppb (49) | 27.0 ppb (25) | 26.9 ppb (25) | 0.0 ppb (0) | 1.0 ppb (1) | 0.62 ppb (7) | 22.0 μg/m3 (20) | 4.0 μg/m3 (17) | 52.0 | |
| March 27, 2020, noon | 78.3 ppb (76) | 50.4 ppb (47) | 55.4 ppb (51) | 28.0 ppb (26) | 24.9 ppb (23) | 0.0 ppb (0) | 1.0 ppb (1) | 0.55 ppb (6) | 17.0 μg/m3 (15) | 6.0 μg/m3 (25) | 76.0 | |
| March 27, 2020, 11 a.m. | 23.2 ppb (21) | 3.9 ppb (4) | 25.4 ppb (24) | 19.0 ppb (18) | 19.7 ppb (18) | 0.0 ppb (0) | 7.0 ppb (5) | 0.3 ppb (3) | 12.0 μg/m3 (11) | 7.0 μg/m3 (29) | 29.0 | |
| March 27, 2020, 10 a.m. | 17.5 ppb (16) | 1.3 ppb (1) | 17.3 ppb (16) | 16.0 ppb (15) | 16.7 ppb (15) | 0.0 ppb (0) | 10.0 ppb (8) | 0.21 ppb (2) | 14.0 μg/m3 (13) | 7.0 μg/m3 (29) | 29.0 | |
| March 27, 2020, 9 a.m. | 16.9 ppb (16) | 0.5 ppb (0) | 17.5 ppb (16) | 16.0 ppb (15) | 17.1 ppb (16) | 0.0 ppb (0) | 9.0 ppb (7) | 0.23 ppb (3) | 16.0 μg/m3 (15) | 6.0 μg/m3 (25) | 25.0 | |
| March 27, 2020, 8 a.m. | 16.0 ppb (15) | 0.3 ppb (0) | 16.6 ppb (15) | 16.0 ppb (15) | 16.2 ppb (15) | 0.0 ppb (0) | 12.0 ppb (9) | 0.21 ppb (2) | 12.0 μg/m3 (11) | 6.0 μg/m3 (25) | 25.0 | |
| March 27, 2020, 7 a.m. | 17.8 ppb (16) | 1.9 ppb (2) | 18.4 ppb (17) | 16.0 ppb (15) | 16.5 ppb (15) | 0.0 ppb (0) | 15.0 ppb (12) | 0.26 ppb (3) | 18.0 μg/m3 (16) | 5.0 μg/m3 (21) | 21.0 | |
| March 27, 2020, 6 a.m. | 15.1 ppb (14) | 1.0 ppb (1) | 15.8 ppb (15) | 14.0 ppb (13) | 14.4 ppb (13) | 0.0 ppb (0) | 18.0 ppb (14) | 0.24 ppb (3) | 10.0 μg/m3 (9) | 4.0 μg/m3 (17) | 17.0 | |
| March 27, 2020, 5 a.m. | 10.2 ppb (9) | 0.5 ppb (0) | 10.4 ppb (10) | 10.0 ppb (9) | 9.4 ppb (9) | 0.0 ppb (0) | 23.0 ppb (18) | 0.21 ppb (2) | 9.0 μg/m3 (8) | 4.0 μg/m3 (17) | 18.0 | |
| March 27, 2020, 4 a.m. | 6.4 ppb (6) | -0.4 ppb (0) | 7.3 ppb (7) | 7.0 ppb (6) | 7.1 ppb (7) | 0.0 ppb (0) | 29.0 ppb (22) | 0.15 ppb (2) | 9.0 μg/m3 (8) | 4.0 μg/m3 (17) | 22.0 | |
| March 27, 2020, 3 a.m. | 3.9 ppb (4) | -0.6 ppb (0) | 4.5 ppb (4) | 4.0 ppb (4) | 4.5 ppb (4) | 0.0 ppb (0) | 33.0 ppb (25) | 0.09 ppb (1) | 9.0 μg/m3 (8) | 5.0 μg/m3 (21) | 25.0 | |
| March 27, 2020, 2 a.m. | 3.8 ppb (4) | -0.5 ppb (0) | 4.2 ppb (4) | 4.0 ppb (4) | 4.0 ppb (4) | 0.0 ppb (0) | 33.0 ppb (25) | 0.09 ppb (1) | 11.0 μg/m3 (10) | 2.0 μg/m3 (8) | 25.0 | |
| March 27, 2020, 1 a.m. | 2.6 ppb (2) | -0.5 ppb (0) | 3.1 ppb (3) | 3.0 ppb (3) | 2.8 ppb (3) | 0.0 ppb (0) | 34.0 ppb (26) | 0.08 ppb (1) | 13.0 μg/m3 (12) | 2.0 μg/m3 (8) | 26.0 | |
| March 27, 2020, midnight | 1.9 ppb (2) | -0.3 ppb (0) | 2.4 ppb (2) | 2.0 ppb (2) | 1.9 ppb (2) | 0.0 ppb (0) | 36.0 ppb (28) | 0.07 ppb (1) | 18.0 μg/m3 (16) | 4.0 μg/m3 (17) | 28.0 | |
| March 26, 2020, 11 p.m. | 1.6 ppb (1) | -0.2 ppb (0) | 1.9 ppb (2) | 2.0 ppb (2) | 1.4 ppb (1) | 0.0 ppb (0) | 37.0 ppb (28) | 0.06 ppb (1) | 26.0 μg/m3 (24) | 5.0 μg/m3 (21) | 28.0 | |
| March 26, 2020, 10 p.m. | 2.1 ppb (2) | 0.0 ppb (0) | 2.1 ppb (2) | 2.0 ppb (2) | 1.4 ppb (1) | 0.0 ppb (0) | 38.0 ppb (29) | 0.06 ppb (1) | 20.0 μg/m3 (18) | 3.0 μg/m3 (12) | 29.0 | |
| March 26, 2020, 9 p.m. | N/A | N/A | 3.3 ppb (3) | N/A | 2.3 ppb (2) | 0.0 ppb (0) | N/A | 0.08 ppb (1) | 19.0 μg/m3 (17) | 4.0 μg/m3 (17) | 17.0 | |
| March 26, 2020, 8 p.m. | N/A | N/A | 4.7 ppb (4) | N/A | 3.4 ppb (3) | 0.0 ppb (0) | N/A | 0.1 ppb (1) | 11.0 μg/m3 (10) | 4.0 μg/m3 (17) | 17.0 | |
| March 26, 2020, 7 p.m. | 5.6 ppb (5) | 1.0 ppb (1) | 6.7 ppb (6) | 5.0 ppb (5) | 4.7 ppb (4) | N/A | 35.0 ppb (27) | N/A | 10.0 μg/m3 (9) | 5.0 μg/m3 (21) | 27.0 | |
| March 26, 2020, 6 p.m. | 5.6 ppb (5) | 1.0 ppb (1) | 6.6 ppb (6) | 5.0 ppb (5) | 4.5 ppb (4) | N/A | 35.0 ppb (27) | N/A | 7.0 μg/m3 (6) | 5.0 μg/m3 (21) | 27.0 | |
| March 26, 2020, 5 p.m. | 5.1 ppb (5) | 0.9 ppb (1) | 6.2 ppb (6) | 4.0 ppb (4) | 4.2 ppb (4) | N/A | 34.0 ppb (26) | N/A | 9.0 μg/m3 (8) | 6.0 μg/m3 (25) | 26.0 | |
| March 26, 2020, 4 p.m. | 11.5 ppb (11) | 3.3 ppb (3) | 13.2 ppb (12) | 8.0 ppb (7) | 8.2 ppb (8) | N/A | 26.0 ppb (20) | N/A | 10.0 μg/m3 (9) | 4.0 μg/m3 (17) | 20.0 | |
| March 26, 2020, 3 p.m. | 19.9 ppb (18) | 6.9 ppb (6) | 21.6 ppb (20) | 13.0 ppb (12) | 13.1 ppb (12) | 0.0 ppb (0) | 16.0 ppb (12) | 0.22 ppb (2) | 11.0 μg/m3 (10) | 6.0 μg/m3 (25) | 25.0 | |
| March 26, 2020, 2 p.m. | 38.8 ppb (36) | 16.3 ppb (15) | 41.5 ppb (38) | 23.0 ppb (21) | 23.3 ppb (22) | 0.0 ppb (0) | 4.0 ppb (3) | 0.4 ppb (4) | 18.0 μg/m3 (16) | 7.0 μg/m3 (29) | 38.0 | |
| March 26, 2020, 1 p.m. | 49.1 ppb (45) | 23.9 ppb (22) | 52.7 ppb (49) | 25.0 ppb (23) | 23.7 ppb (22) | 0.0 ppb (0) | 1.0 ppb (1) | 0.55 ppb (6) | 22.0 μg/m3 (20) | 7.0 μg/m3 (29) | 49.0 | |
| March 26, 2020, noon | 30.1 ppb (28) | 5.3 ppb (5) | 27.4 ppb (25) | 25.0 ppb (23) | 24.7 ppb (23) | 0.0 ppb (0) | 3.0 ppb (2) | 0.31 ppb (3) | 14.0 μg/m3 (13) | 5.0 μg/m3 (21) | 28.0 | |
| March 26, 2020, 11 a.m. | 17.6 ppb (16) | 1.9 ppb (2) | 16.1 ppb (15) | 16.0 ppb (15) | 14.3 ppb (13) | 0.0 ppb (0) | 17.0 ppb (13) | 0.19 ppb (2) | 11.0 μg/m3 (10) | 1.0 μg/m3 (4) | 16.0 | |
| March 26, 2020, 10 a.m. | 5.1 ppb (5) | 0.1 ppb (0) | 2.8 ppb (3) | 5.0 ppb (5) | 2.7 ppb (3) | 0.0 ppb (0) | 31.0 ppb (24) | 0.12 ppb (1) | 8.0 μg/m3 (7) | 1.0 μg/m3 (4) | 24.0 | |
| March 26, 2020, 9 a.m. | 0.5 ppb (0) | -0.7 ppb (0) | 1.4 ppb (1) | 1.0 ppb (1) | 1.3 ppb (1) | 0.0 ppb (0) | 36.0 ppb (28) | 0.08 ppb (1) | 6.0 μg/m3 (5) | 3.0 μg/m3 (12) | 28.0 | |
| March 26, 2020, 8 a.m. | 0.5 ppb (0) | -0.6 ppb (0) | 2.0 ppb (2) | 1.0 ppb (1) | 1.7 ppb (2) | 0.0 ppb (0) | 37.0 ppb (28) | 0.09 ppb (1) | 6.0 μg/m3 (5) | 4.0 μg/m3 (17) | 28.0 | |
| March 26, 2020, 7 a.m. | 3.8 ppb (4) | -0.3 ppb (0) | 5.2 ppb (5) | 4.0 ppb (4) | 4.3 ppb (4) | 0.0 ppb (0) | 31.0 ppb (24) | 0.14 ppb (2) | 9.0 μg/m3 (8) | 3.0 μg/m3 (12) | 24.0 | |
| March 26, 2020, 6 a.m. | 7.1 ppb (7) | 0.0 ppb (0) | 8.0 ppb (7) | 7.0 ppb (6) | 7.4 ppb (7) | 0.0 ppb (0) | 27.0 ppb (21) | 0.18 ppb (2) | 10.0 μg/m3 (9) | 5.0 μg/m3 (21) | 21.0 | |
| March 26, 2020, 5 a.m. | 2.6 ppb (2) | -0.5 ppb (0) | 3.3 ppb (3) | 3.0 ppb (3) | 3.2 ppb (3) | 0.0 ppb (0) | 32.0 ppb (25) | 0.11 ppb (1) | 8.0 μg/m3 (7) | 6.0 μg/m3 (25) | 25.0 | |
| March 26, 2020, 4 a.m. | 3.5 ppb (3) | -0.6 ppb (0) | 4.3 ppb (4) | 4.0 ppb (4) | 4.3 ppb (4) | 0.0 ppb (0) | 34.0 ppb (26) | 0.12 ppb (1) | 15.0 μg/m3 (14) | 4.0 μg/m3 (17) | 26.0 | |
| March 26, 2020, 3 a.m. | 2.4 ppb (2) | -0.7 ppb (0) | 3.4 ppb (3) | 3.0 ppb (3) | 3.3 ppb (3) | 0.0 ppb (0) | 37.0 ppb (28) | 0.09 ppb (1) | 13.0 μg/m3 (12) | 4.0 μg/m3 (17) | 28.0 | |
| March 26, 2020, 2 a.m. | 1.1 ppb (1) | -0.7 ppb (0) | 2.0 ppb (2) | 2.0 ppb (2) | 1.9 ppb (2) | 0.0 ppb (0) | 37.0 ppb (28) | 0.07 ppb (1) | 8.0 μg/m3 (7) | 1.0 μg/m3 (4) | 28.0 | |
| March 26, 2020, 1 a.m. | 0.8 ppb (1) | -0.6 ppb (0) | 1.6 ppb (1) | 1.0 ppb (1) | 1.4 ppb (1) | 0.0 ppb (0) | 36.0 ppb (28) | 0.06 ppb (1) | 7.0 μg/m3 (6) | 1.0 μg/m3 (4) | 28.0 | |
| March 26, 2020, midnight | 1.5 ppb (1) | -0.3 ppb (0) | 2.3 ppb (2) | 2.0 ppb (2) | 1.8 ppb (2) | 0.0 ppb (0) | 34.0 ppb (26) | 0.06 ppb (1) | 7.0 μg/m3 (6) | 1.0 μg/m3 (4) | 26.0 | |
| March 25, 2020, 11 p.m. | 1.2 ppb (1) | -0.3 ppb (0) | 2.0 ppb (2) | 1.0 ppb (1) | 1.5 ppb (1) | 0.0 ppb (0) | 35.0 ppb (27) | 0.06 ppb (1) | 5.0 μg/m3 (5) | 2.0 μg/m3 (8) | 27.0 | |
| March 25, 2020, 10 p.m. | 1.6 ppb (1) | -0.1 ppb (0) | 2.4 ppb (2) | 2.0 ppb (2) | 1.7 ppb (2) | 0.0 ppb (0) | 36.0 ppb (28) | 0.07 ppb (1) | 7.0 μg/m3 (6) | 3.0 μg/m3 (12) | 28.0 | |
| March 25, 2020, 9 p.m. | 1.8 ppb (2) | 0.0 ppb (0) | 2.6 ppb (2) | 2.0 ppb (2) | 1.8 ppb (2) | 0.0 ppb (0) | 36.0 ppb (28) | 0.11 ppb (1) | 6.0 μg/m3 (5) | 3.0 μg/m3 (12) | 28.0 | |
| March 25, 2020, 8 p.m. | 1.6 ppb (1) | -0.1 ppb (0) | 2.5 ppb (2) | 2.0 ppb (2) | 1.8 ppb (2) | N/A | 37.0 ppb (28) | N/A | 7.0 μg/m3 (6) | 4.0 μg/m3 (17) | 28.0 | |
| March 25, 2020, 7 p.m. | 4.2 ppb (4) | 0.7 ppb (1) | 5.1 ppb (5) | 3.0 ppb (3) | 3.5 ppb (3) | N/A | 36.0 ppb (28) | N/A | 9.0 μg/m3 (8) | 4.0 μg/m3 (17) | 28.0 | |
| March 25, 2020, 6 p.m. | 4.2 ppb (4) | 0.3 ppb (0) | 5.0 ppb (5) | 4.0 ppb (4) | 4.0 ppb (4) | N/A | 35.0 ppb (27) | N/A | 11.0 μg/m3 (10) | 3.0 μg/m3 (12) | 27.0 | |
| March 25, 2020, 5 p.m. | 6.6 ppb (6) | 1.4 ppb (1) | 7.5 ppb (7) | 5.0 ppb (5) | 5.1 ppb (5) | N/A | 33.0 ppb (25) | N/A | 14.0 μg/m3 (13) | 4.0 μg/m3 (17) | 25.0 | |
| March 25, 2020, 4 p.m. | 10.1 ppb (9) | 2.2 ppb (2) | 11.7 ppb (11) | 8.0 ppb (7) | 8.3 ppb (8) | 0.0 ppb (0) | 29.0 ppb (22) | 0.14 ppb (2) | 15.0 μg/m3 (14) | 5.0 μg/m3 (21) | 22.0 | |
| March 25, 2020, 3 p.m. | 25.3 ppb (23) | 8.2 ppb (8) | 27.8 ppb (26) | 17.0 ppb (16) | 17.4 ppb (16) | 0.0 ppb (0) | 15.0 ppb (12) | 0.23 ppb (3) | 20.0 μg/m3 (18) | 9.0 μg/m3 (38) | 38.0 | |
| March 25, 2020, 2 p.m. | 29.2 ppb (27) | 9.1 ppb (8) | 31.3 ppb (29) | 20.0 ppb (19) | 20.7 ppb (19) | 0.0 ppb (0) | 8.0 ppb (6) | 0.33 ppb (4) | 23.0 μg/m3 (21) | 6.0 μg/m3 (25) | 29.0 | |
| March 25, 2020, 1 p.m. | 18.6 ppb (17) | 1.1 ppb (1) | 19.2 ppb (18) | 17.0 ppb (16) | 17.7 ppb (16) | 0.0 ppb (0) | 12.0 ppb (9) | 0.22 ppb (2) | 15.0 μg/m3 (14) | 3.0 μg/m3 (12) | 18.0 | |
| March 25, 2020, noon | 13.9 ppb (13) | 0.5 ppb (0) | 13.4 ppb (12) | 13.0 ppb (12) | 12.2 ppb (11) | 0.0 ppb (0) | 17.0 ppb (13) | 0.19 ppb (2) | 13.0 μg/m3 (12) | 2.0 μg/m3 (8) | 13.0 | |
| March 25, 2020, 11 a.m. | 9.4 ppb (9) | -0.2 ppb (0) | 11.1 ppb (10) | 10.0 ppb (9) | 10.9 ppb (10) | 0.0 ppb (0) | 20.0 ppb (15) | 0.16 ppb (2) | 10.0 μg/m3 (9) | 3.0 μg/m3 (12) | 15.0 | |
| March 25, 2020, 10 a.m. | 8.0 ppb (7) | 0.2 ppb (0) | 6.6 ppb (6) | 8.0 ppb (7) | 6.0 ppb (6) | 0.0 ppb (0) | 24.0 ppb (18) | 0.14 ppb (2) | 10.0 μg/m3 (9) | 3.0 μg/m3 (12) | 18.0 | |
| March 25, 2020, 9 a.m. | 3.6 ppb (3) | -0.5 ppb (0) | 3.9 ppb (4) | 4.0 ppb (4) | 3.9 ppb (4) | 0.0 ppb (0) | 28.0 ppb (22) | 0.1 ppb (1) | 11.0 μg/m3 (10) | 2.0 μg/m3 (8) | 22.0 | |
| March 25, 2020, 8 a.m. | 3.0 ppb (3) | -0.4 ppb (0) | 3.1 ppb (3) | 3.0 ppb (3) | 3.0 ppb (3) | 0.0 ppb (0) | 30.0 ppb (23) | 0.09 ppb (1) | 12.0 μg/m3 (11) | 0.0 μg/m3 (0) | 23.0 | |
| March 25, 2020, 7 a.m. | 2.3 ppb (2) | -0.5 ppb (0) | 3.1 ppb (3) | 3.0 ppb (3) | 3.1 ppb (3) | 0.0 ppb (0) | 32.0 ppb (25) | 0.1 ppb (1) | 9.0 μg/m3 (8) | 2.0 μg/m3 (8) | 25.0 | |
| March 25, 2020, 6 a.m. | 3.8 ppb (4) | -0.3 ppb (0) | 4.5 ppb (4) | 4.0 ppb (4) | 4.3 ppb (4) | 0.0 ppb (0) | 30.0 ppb (23) | 0.13 ppb (1) | 9.0 μg/m3 (8) | 2.0 μg/m3 (8) | 23.0 | |
| March 25, 2020, 5 a.m. | 4.4 ppb (4) | -0.4 ppb (0) | 6.2 ppb (6) | 5.0 ppb (5) | 5.8 ppb (5) | 0.0 ppb (0) | 30.0 ppb (23) | 0.11 ppb (1) | 12.0 μg/m3 (11) | 2.0 μg/m3 (8) | 23.0 | |
| March 25, 2020, 4 a.m. | 2.8 ppb (3) | -0.6 ppb (0) | 3.7 ppb (3) | 3.0 ppb (3) | 3.7 ppb (3) | 0.0 ppb (0) | 32.0 ppb (25) | 0.12 ppb (1) | 14.0 μg/m3 (13) | 3.0 μg/m3 (12) | 25.0 | |
| March 25, 2020, 3 a.m. | 1.5 ppb (1) | -0.7 ppb (0) | 2.2 ppb (2) | 2.0 ppb (2) | 2.2 ppb (2) | 0.0 ppb (0) | 35.0 ppb (27) | 0.09 ppb (1) | 11.0 μg/m3 (10) | 3.0 μg/m3 (12) | 27.0 | |
| March 25, 2020, 2 a.m. | 1.2 ppb (1) | -0.7 ppb (0) | 1.9 ppb (2) | 2.0 ppb (2) | 1.9 ppb (2) | 0.0 ppb (0) | 34.0 ppb (26) | 0.08 ppb (1) | 8.0 μg/m3 (7) | 2.0 μg/m3 (8) | 26.0 | |
| March 25, 2020, 1 a.m. | 1.1 ppb (1) | -0.6 ppb (0) | 1.8 ppb (2) | 2.0 ppb (2) | 1.7 ppb (2) | 0.0 ppb (0) | 35.0 ppb (27) | 0.08 ppb (1) | 8.0 μg/m3 (7) | 2.0 μg/m3 (8) | 27.0 | |
| March 25, 2020, midnight | 2.4 ppb (2) | -0.1 ppb (0) | 3.4 ppb (3) | 3.0 ppb (3) | 2.7 ppb (3) | 0.0 ppb (0) | 35.0 ppb (27) | 0.08 ppb (1) | 9.0 μg/m3 (8) | 3.0 μg/m3 (12) | 27.0 | |
| March 24, 2020, 11 p.m. | 2.1 ppb (2) | -0.1 ppb (0) | 2.7 ppb (3) | 2.0 ppb (2) | 2.0 ppb (2) | 0.0 ppb (0) | 36.0 ppb (28) | 0.09 ppb (1) | 11.0 μg/m3 (10) | 6.0 μg/m3 (25) | 28.0 | |
| March 24, 2020, 10 p.m. | 2.2 ppb (2) | 0.0 ppb (0) | 2.8 ppb (3) | 2.0 ppb (2) | 2.1 ppb (2) | N/A | 36.0 ppb (28) | N/A | 13.0 μg/m3 (12) | 5.0 μg/m3 (21) | 28.0 | |
| March 24, 2020, 9 p.m. | 5.2 ppb (5) | 1.3 ppb (1) | 5.1 ppb (5) | 4.0 ppb (4) | 3.1 ppb (3) | N/A | 36.0 ppb (28) | N/A | 13.0 μg/m3 (12) | 5.0 μg/m3 (21) | 28.0 | |
| March 24, 2020, 8 p.m. | 9.3 ppb (9) | 2.6 ppb (2) | 8.0 ppb (7) | 7.0 ppb (6) | 4.7 ppb (4) | N/A | 33.0 ppb (25) | N/A | 16.0 μg/m3 (15) | 5.0 μg/m3 (21) | 25.0 | |
| March 24, 2020, 7 p.m. | 12.7 ppb (12) | 2.0 ppb (2) | N/A | 11.0 ppb (10) | N/A | 0.0 ppb (0) | 27.0 ppb (21) | 0.29 ppb (3) | 19.0 μg/m3 (17) | 4.0 μg/m3 (17) | 21.0 | |
| March 24, 2020, 6 p.m. | 10.9 ppb (10) | 1.7 ppb (2) | N/A | 9.0 ppb (8) | N/A | 0.0 ppb (0) | 28.0 ppb (22) | 0.26 ppb (3) | 14.0 μg/m3 (13) | 4.0 μg/m3 (17) | 22.0 | |
| March 24, 2020, 5 p.m. | 14.3 ppb (13) | 4.5 ppb (4) | N/A | 10.0 ppb (9) | N/A | 0.0 ppb (0) | 21.0 ppb (16) | 0.31 ppb (3) | 21.0 μg/m3 (19) | 6.0 μg/m3 (25) | 25.0 | |
| March 24, 2020, 4 p.m. | 20.0 ppb (19) | 7.5 ppb (7) | N/A | 12.0 ppb (11) | N/A | 0.0 ppb (0) | 17.0 ppb (13) | 0.32 ppb (4) | 20.0 μg/m3 (18) | 7.0 μg/m3 (29) | 29.0 | |
| March 24, 2020, 3 p.m. | 31.6 ppb (29) | 14.0 ppb (13) | 31.1 ppb (29) | 18.0 ppb (17) | 17.0 ppb (16) | 0.0 ppb (0) | 6.0 ppb (5) | 0.41 ppb (5) | 20.0 μg/m3 (18) | 7.0 μg/m3 (29) | 29.0 | |
| March 24, 2020, 2 p.m. | 35.4 ppb (33) | 17.8 ppb (16) | 34.6 ppb (32) | 18.0 ppb (17) | 16.7 ppb (15) | 0.0 ppb (0) | 3.0 ppb (2) | 0.47 ppb (5) | 17.0 μg/m3 (15) | 8.0 μg/m3 (33) | 33.0 | |
| March 24, 2020, 1 p.m. | 49.2 ppb (46) | 32.8 ppb (30) | 46.5 ppb (43) | 16.0 ppb (15) | 11.4 ppb (11) | 0.0 ppb (0) | 1.0 ppb (1) | 0.74 ppb (8) | 23.0 μg/m3 (21) | 9.0 μg/m3 (38) | 46.0 | |
| March 24, 2020, noon | 38.0 ppb (35) | 21.1 ppb (20) | 36.3 ppb (34) | 17.0 ppb (16) | 16.0 ppb (15) | 0.0 ppb (0) | 1.0 ppb (1) | 0.58 ppb (6) | 20.0 μg/m3 (18) | 6.0 μg/m3 (25) | 35.0 | |
| March 24, 2020, 11 a.m. | 29.3 ppb (27) | 13.0 ppb (12) | 32.0 ppb (30) | 16.0 ppb (15) | 14.4 ppb (13) | 0.0 ppb (0) | 1.0 ppb (1) | 0.43 ppb (5) | 17.0 μg/m3 (15) | 3.0 μg/m3 (12) | 30.0 | |
| March 24, 2020, 10 a.m. | 26.5 ppb (25) | 8.9 ppb (8) | 28.1 ppb (26) | 18.0 ppb (17) | 18.3 ppb (17) | 0.0 ppb (0) | 1.0 ppb (1) | 0.36 ppb (4) | 17.0 μg/m3 (15) | 5.0 μg/m3 (21) | 26.0 | |
| March 24, 2020, 9 a.m. | 31.0 ppb (29) | 11.3 ppb (10) | 30.7 ppb (28) | 20.0 ppb (19) | 18.3 ppb (17) | 0.0 ppb (0) | 0.0 ppb (0) | 0.42 ppb (5) | 20.0 μg/m3 (18) | 8.0 μg/m3 (33) | 33.0 | |
| March 24, 2020, 8 a.m. | 22.0 ppb (20) | 6.8 ppb (6) | 19.2 ppb (18) | 15.0 ppb (14) | 13.4 ppb (12) | 0.0 ppb (0) | 4.0 ppb (3) | 0.38 ppb (4) | 12.0 μg/m3 (11) | 7.0 μg/m3 (29) | 29.0 | |
| March 24, 2020, 7 a.m. | 12.2 ppb (11) | 0.4 ppb (0) | 12.2 ppb (11) | 12.0 ppb (11) | 11.8 ppb (11) | 0.0 ppb (0) | 11.0 ppb (8) | 0.36 ppb (4) | 17.0 μg/m3 (15) | 5.0 μg/m3 (21) | 21.0 | |
| March 24, 2020, 6 a.m. | 11.7 ppb (11) | 0.1 ppb (0) | 11.6 ppb (11) | 12.0 ppb (11) | 10.9 ppb (10) | 0.0 ppb (0) | 13.0 ppb (10) | 0.38 ppb (4) | 15.0 μg/m3 (14) | 3.0 μg/m3 (12) | 14.0 | |
| March 24, 2020, 5 a.m. | 5.6 ppb (5) | -0.3 ppb (0) | 5.3 ppb (5) | 6.0 ppb (6) | 5.1 ppb (5) | 0.0 ppb (0) | 24.0 ppb (18) | 0.28 ppb (3) | 12.0 μg/m3 (11) | 3.0 μg/m3 (12) | 18.0 | |
| March 24, 2020, 4 a.m. | 2.1 ppb (2) | -0.5 ppb (0) | 1.1 ppb (1) | 3.0 ppb (3) | 1.0 ppb (1) | 0.0 ppb (0) | 31.0 ppb (24) | 0.22 ppb (2) | 9.0 μg/m3 (8) | 3.0 μg/m3 (12) | 24.0 | |
| March 24, 2020, 3 a.m. | 1.9 ppb (2) | -0.6 ppb (0) | 1.0 ppb (1) | 3.0 ppb (3) | 0.9 ppb (1) | 0.0 ppb (0) | 32.0 ppb (25) | 0.19 ppb (2) | 11.0 μg/m3 (10) | 1.0 μg/m3 (4) | 25.0 | |
| March 24, 2020, 2 a.m. | 1.3 ppb (1) | -0.6 ppb (0) | 0.4 ppb (0) | 2.0 ppb (2) | 0.3 ppb (0) | 0.0 ppb (0) | 34.0 ppb (26) | 0.19 ppb (2) | 10.0 μg/m3 (9) | 2.0 μg/m3 (8) | 26.0 | |
| March 24, 2020, 1 a.m. | 1.1 ppb (1) | -0.6 ppb (0) | 0.2 ppb (0) | 2.0 ppb (2) | 0.0 ppb (0) | 0.0 ppb (0) | 35.0 ppb (27) | 0.18 ppb (2) | 7.0 μg/m3 (6) | 1.0 μg/m3 (4) | 27.0 | |
| March 24, 2020, midnight | 1.1 ppb (1) | -0.5 ppb (0) | 0.2 ppb (0) | 2.0 ppb (2) | -0.1 ppb (0) | 0.0 ppb (0) | 36.0 ppb (28) | 0.19 ppb (2) | 8.0 μg/m3 (7) | 0.0 μg/m3 (0) | 28.0 | |
| March 23, 2020, 11 p.m. | 1.2 ppb (1) | -0.4 ppb (0) | 0.3 ppb (0) | 2.0 ppb (2) | -0.1 ppb (0) | 0.0 ppb (0) | 37.0 ppb (28) | 0.18 ppb (2) | 9.0 μg/m3 (8) | 3.0 μg/m3 (12) | 28.0 | |
| March 23, 2020, 10 p.m. | 1.6 ppb (1) | -0.2 ppb (0) | 0.7 ppb (1) | 2.0 ppb (2) | 0.1 ppb (0) | 0.0 ppb (0) | 38.0 ppb (29) | 0.19 ppb (2) | 9.0 μg/m3 (8) | 4.0 μg/m3 (17) | 29.0 | |
| March 23, 2020, 9 p.m. | 3.0 ppb (3) | 0.2 ppb (0) | 2.2 ppb (2) | 3.0 ppb (3) | 1.1 ppb (1) | 0.0 ppb (0) | 38.0 ppb (29) | 0.2 ppb (2) | 10.0 μg/m3 (9) | 4.0 μg/m3 (17) | 29.0 | |
| March 23, 2020, 8 p.m. | 3.3 ppb (3) | 0.3 ppb (0) | 2.6 ppb (2) | 3.0 ppb (3) | 1.5 ppb (1) | 0.0 ppb (0) | 39.0 ppb (30) | 0.2 ppb (2) | 10.0 μg/m3 (9) | 4.0 μg/m3 (17) | 30.0 | |
| March 23, 2020, 7 p.m. | 3.4 ppb (3) | 0.3 ppb (0) | 2.5 ppb (2) | 3.0 ppb (3) | 1.5 ppb (1) | 0.0 ppb (0) | 37.0 ppb (28) | 0.19 ppb (2) | 10.0 μg/m3 (9) | 6.0 μg/m3 (25) | 28.0 | |
| March 23, 2020, 6 p.m. | 3.3 ppb (3) | 0.3 ppb (0) | 2.5 ppb (2) | 3.0 ppb (3) | 1.5 ppb (1) | 0.0 ppb (0) | 37.0 ppb (28) | 0.2 ppb (2) | 10.0 μg/m3 (9) | 2.0 μg/m3 (8) | 28.0 | |
| March 23, 2020, 5 p.m. | 4.2 ppb (4) | 0.6 ppb (1) | 3.4 ppb (3) | 4.0 ppb (4) | 2.0 ppb (2) | 0.0 ppb (0) | 34.0 ppb (26) | 0.2 ppb (2) | 10.0 μg/m3 (9) | 3.0 μg/m3 (12) | 26.0 | |
| March 23, 2020, 4 p.m. | 9.6 ppb (9) | 2.1 ppb (2) | 8.5 ppb (8) | 7.0 ppb (6) | 5.7 ppb (5) | 0.0 ppb (0) | 26.0 ppb (20) | 0.25 ppb (3) | 11.0 μg/m3 (10) | 6.0 μg/m3 (25) | 25.0 | |
| March 23, 2020, 3 p.m. | 10.7 ppb (10) | 2.4 ppb (2) | 9.5 ppb (9) | 8.0 ppb (7) | 6.3 ppb (6) | 0.0 ppb (0) | 26.0 ppb (20) | 0.28 ppb (3) | 13.0 μg/m3 (12) | 6.0 μg/m3 (25) | 25.0 | |
| March 23, 2020, 2 p.m. | 15.9 ppb (15) | 2.3 ppb (2) | 14.5 ppb (13) | 14.0 ppb (13) | 11.8 ppb (11) | 0.0 ppb (0) | 18.0 ppb (14) | 0.38 ppb (4) | 12.0 μg/m3 (11) | 6.0 μg/m3 (25) | 25.0 | |
| March 23, 2020, 1 p.m. | 17.8 ppb (16) | 6.8 ppb (6) | 15.6 ppb (14) | 11.0 ppb (10) | 5.0 ppb (5) | 0.0 ppb (0) | 21.0 ppb (16) | 0.32 ppb (4) | 6.0 μg/m3 (5) | 5.0 μg/m3 (21) | 21.0 | |
| March 23, 2020, noon | 7.7 ppb (7) | 0.3 ppb (0) | 4.8 ppb (4) | 7.0 ppb (6) | 4.7 ppb (4) | 0.0 ppb (0) | 24.0 ppb (18) | 0.24 ppb (3) | 7.0 μg/m3 (6) | 6.0 μg/m3 (25) | 25.0 | |
| March 23, 2020, 11 a.m. | 3.2 ppb (3) | -0.2 ppb (0) | 1.9 ppb (2) | 3.0 ppb (3) | 1.6 ppb (1) | 0.0 ppb (0) | 29.0 ppb (22) | 0.19 ppb (2) | 11.0 μg/m3 (10) | 3.0 μg/m3 (12) | 22.0 | |
| March 23, 2020, 10 a.m. | 3.1 ppb (3) | -0.4 ppb (0) | 4.1 ppb (4) | 3.0 ppb (3) | 4.1 ppb (4) | 0.0 ppb (0) | 27.0 ppb (21) | 0.18 ppb (2) | 8.0 μg/m3 (7) | 0.0 μg/m3 (0) | 21.0 | |
| March 23, 2020, 9 a.m. | 6.4 ppb (6) | -0.4 ppb (0) | 4.5 ppb (4) | 7.0 ppb (6) | 4.5 ppb (4) | 0.0 ppb (0) | 22.0 ppb (17) | 0.2 ppb (2) | 6.0 μg/m3 (5) | 4.0 μg/m3 (17) | 17.0 | |
| March 23, 2020, 8 a.m. | 7.0 ppb (6) | -0.5 ppb (0) | 4.7 ppb (4) | 8.0 ppb (7) | 4.7 ppb (4) | 0.0 ppb (0) | 22.0 ppb (17) | 0.2 ppb (2) | 6.0 μg/m3 (5) | 6.0 μg/m3 (25) | 25.0 | |
| March 23, 2020, 7 a.m. | 2.9 ppb (3) | -0.6 ppb (0) | 2.1 ppb (2) | 4.0 ppb (4) | 2.1 ppb (2) | 0.0 ppb (0) | 27.0 ppb (21) | 0.18 ppb (2) | 4.0 μg/m3 (4) | 1.0 μg/m3 (4) | 21.0 | |
| March 23, 2020, 6 a.m. | 3.9 ppb (4) | -0.1 ppb (0) | 2.4 ppb (2) | 4.0 ppb (4) | 1.8 ppb (2) | 0.0 ppb (0) | 27.0 ppb (21) | 0.18 ppb (2) | 4.0 μg/m3 (4) | 1.0 μg/m3 (4) | 21.0 | |
| March 23, 2020, 5 a.m. | 1.9 ppb (2) | -0.7 ppb (0) | 0.8 ppb (1) | 3.0 ppb (3) | 0.5 ppb (0) | 0.0 ppb (0) | 30.0 ppb (23) | 0.18 ppb (2) | 3.0 μg/m3 (3) | 3.0 μg/m3 (12) | 23.0 | |
| March 23, 2020, 4 a.m. | 3.4 ppb (3) | -0.6 ppb (0) | 2.5 ppb (2) | 4.0 ppb (4) | 2.4 ppb (2) | 0.0 ppb (0) | 27.0 ppb (21) | 0.21 ppb (2) | 5.0 μg/m3 (5) | 4.0 μg/m3 (17) | 21.0 | |
| March 23, 2020, 3 a.m. | 3.8 ppb (4) | -0.4 ppb (0) | 2.5 ppb (2) | 4.0 ppb (4) | 2.2 ppb (2) | 0.0 ppb (0) | 26.0 ppb (20) | 0.2 ppb (2) | 7.0 μg/m3 (6) | 4.0 μg/m3 (17) | 20.0 |