Concord CA, US: 37.9383, -122.025
| Date Observed (UTC) | NOX | NO | NOY | NO2 | NO2Y | SO2 | OZONE | CO | PM10 | PM2.5 | AQI | AQI/500 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| July 17, 2019, 8 a.m. | 1.3 ppb (1) | -0.1 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 22.0 ppb (17) | 0.29 ppb (3) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| July 17, 2019, 7 a.m. | 1.1 ppb (1) | -0.1 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 23.0 ppb (18) | 0.29 ppb (3) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| July 17, 2019, 6 a.m. | 1.0 ppb (1) | -0.2 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 23.0 ppb (18) | 0.29 ppb (3) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| July 17, 2019, 5 a.m. | 1.2 ppb (1) | -0.2 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 24.0 ppb (18) | 0.29 ppb (3) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| July 17, 2019, 4 a.m. | 1.7 ppb (2) | -0.1 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 24.0 ppb (18) | 0.29 ppb (3) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| July 17, 2019, 3 a.m. | 2.7 ppb (3) | -0.1 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 26.0 ppb (20) | 0.3 ppb (3) | N/A | 11.0 μg/m3 (46) | 46.0 | |
| July 17, 2019, 2 a.m. | 4.0 ppb (4) | 0.2 ppb (0) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 27.0 ppb (21) | 0.31 ppb (3) | N/A | 11.0 μg/m3 (46) | 46.0 | |
| July 17, 2019, 1 a.m. | 3.7 ppb (3) | 0.4 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 32.0 ppb (25) | 0.3 ppb (3) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| July 17, 2019, midnight | 1.1 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 40.0 ppb (31) | 0.27 ppb (3) | N/A | 5.0 μg/m3 (21) | 31.0 | |
| July 16, 2019, 11 p.m. | 1.3 ppb (1) | 0.1 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 38.0 ppb (29) | 0.27 ppb (3) | N/A | 6.0 μg/m3 (25) | 29.0 | |
| July 16, 2019, 10 p.m. | 1.1 ppb (1) | 0.1 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 34.0 ppb (26) | 0.28 ppb (3) | N/A | 5.0 μg/m3 (21) | 26.0 | |
| July 16, 2019, 9 p.m. | 1.2 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 34.0 ppb (26) | 0.29 ppb (3) | N/A | 5.0 μg/m3 (21) | 26.0 | |
| July 16, 2019, 8 p.m. | 1.5 ppb (1) | 0.1 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 33.0 ppb (25) | 0.29 ppb (3) | N/A | 4.0 μg/m3 (17) | 25.0 | |
| July 16, 2019, 7 p.m. | 2.2 ppb (2) | 0.5 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 30.0 ppb (23) | 0.3 ppb (3) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| July 16, 2019, 6 p.m. | 3.1 ppb (3) | 0.8 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 25.0 ppb (19) | 0.33 ppb (4) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| July 16, 2019, 5 p.m. | 3.2 ppb (3) | 1.0 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 20.0 ppb (15) | 0.33 ppb (4) | N/A | N/A | 15.0 | |
| July 16, 2019, 4 p.m. | 4.0 ppb (4) | 1.6 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 15.0 ppb (12) | 0.32 ppb (4) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| July 16, 2019, 3 p.m. | 3.6 ppb (3) | 1.5 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 13.0 ppb (10) | 0.32 ppb (4) | N/A | 2.0 μg/m3 (8) | 10.0 | |
| July 16, 2019, 2 p.m. | 4.9 ppb (5) | 1.8 ppb (2) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 11.0 ppb (8) | 0.32 ppb (4) | N/A | 2.0 μg/m3 (8) | 8.0 | |
| July 16, 2019, 1 p.m. | 4.2 ppb (4) | 0.5 ppb (0) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 9.0 ppb (7) | 0.31 ppb (3) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| July 16, 2019, noon | 2.6 ppb (2) | -0.1 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 11.0 ppb (8) | 0.29 ppb (3) | N/A | 2.0 μg/m3 (8) | 8.0 | |
| July 16, 2019, 11 a.m. | 1.8 ppb (2) | -0.1 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 12.0 ppb (9) | 0.28 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| July 16, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 μg/m3 (29) | 29.0 | |
| July 16, 2019, 9 a.m. | 2.0 ppb (2) | -0.1 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 13.0 ppb (10) | 0.29 ppb (3) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| July 16, 2019, 8 a.m. | 2.7 ppb (3) | -0.1 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 13.0 ppb (10) | 0.29 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| July 16, 2019, 7 a.m. | 2.3 ppb (2) | -0.1 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 14.0 ppb (11) | 0.29 ppb (3) | N/A | 1.0 μg/m3 (4) | 11.0 | |
| July 16, 2019, 6 a.m. | 2.6 ppb (2) | -0.1 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 15.0 ppb (12) | 0.29 ppb (3) | N/A | 2.0 μg/m3 (8) | 12.0 | |
| July 16, 2019, 5 a.m. | 3.7 ppb (3) | -0.1 ppb (0) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 16.0 ppb (12) | 0.31 ppb (3) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| July 16, 2019, 4 a.m. | 4.8 ppb (4) | -0.1 ppb (0) | N/A | 5.0 ppb (5) | N/A | 0.0 ppb (0) | 17.0 ppb (13) | 0.33 ppb (4) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| July 16, 2019, 3 a.m. | 5.1 ppb (5) | 0.0 ppb (0) | N/A | 5.0 ppb (5) | N/A | 0.0 ppb (0) | 19.0 ppb (15) | 0.33 ppb (4) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| July 16, 2019, 2 a.m. | 5.4 ppb (5) | 0.5 ppb (0) | N/A | 5.0 ppb (5) | N/A | 0.0 ppb (0) | 23.0 ppb (18) | 0.34 ppb (4) | N/A | 4.0 μg/m3 (17) | 18.0 | |
| July 16, 2019, 1 a.m. | 6.8 ppb (6) | 1.4 ppb (1) | N/A | 5.0 ppb (5) | N/A | 0.0 ppb (0) | 27.0 ppb (21) | 0.37 ppb (4) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| July 16, 2019, midnight | 4.2 ppb (4) | 0.6 ppb (1) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 31.0 ppb (24) | 0.32 ppb (4) | N/A | 3.0 μg/m3 (12) | 24.0 | |
| July 15, 2019, 11 p.m. | 1.5 ppb (1) | 0.1 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 31.0 ppb (24) | 0.28 ppb (3) | N/A | 5.0 μg/m3 (21) | 24.0 | |
| July 15, 2019, 10 p.m. | 2.1 ppb (2) | 0.1 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 36.0 ppb (28) | 0.29 ppb (3) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| July 15, 2019, 9 p.m. | 2.5 ppb (2) | 0.2 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 38.0 ppb (29) | 0.3 ppb (3) | N/A | 6.0 μg/m3 (25) | 29.0 | |
| July 15, 2019, 8 p.m. | 3.8 ppb (4) | 0.3 ppb (0) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 44.0 ppb (34) | 0.33 ppb (4) | N/A | 7.0 μg/m3 (29) | 34.0 | |
| July 15, 2019, 7 p.m. | 3.2 ppb (3) | 0.3 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 40.0 ppb (31) | 0.3 ppb (3) | N/A | 6.0 μg/m3 (25) | 31.0 | |
| July 15, 2019, 6 p.m. | 3.4 ppb (3) | 0.5 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 35.0 ppb (27) | 0.29 ppb (3) | N/A | 4.0 μg/m3 (17) | 27.0 | |
| July 15, 2019, 5 p.m. | 2.0 ppb (2) | 0.3 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 33.0 ppb (25) | 0.28 ppb (3) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| July 15, 2019, 4 p.m. | 2.8 ppb (3) | 0.5 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 31.0 ppb (24) | 0.29 ppb (3) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| July 15, 2019, 3 p.m. | 3.7 ppb (3) | 0.8 ppb (1) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 26.0 ppb (20) | 0.3 ppb (3) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| July 15, 2019, 2 p.m. | 4.8 ppb (4) | 1.0 ppb (1) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 22.0 ppb (17) | 0.31 ppb (3) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| July 15, 2019, 1 p.m. | 5.3 ppb (5) | 0.3 ppb (0) | N/A | 5.0 ppb (5) | N/A | 0.0 ppb (0) | 16.0 ppb (12) | 0.31 ppb (3) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| July 15, 2019, noon | 4.6 ppb (4) | -0.1 ppb (0) | N/A | 5.0 ppb (5) | N/A | 0.0 ppb (0) | 17.0 ppb (13) | 0.31 ppb (3) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| July 15, 2019, 11 a.m. | 3.1 ppb (3) | -0.1 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 17.0 ppb (13) | 0.29 ppb (3) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| July 15, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 μg/m3 (29) | 29.0 | |
| July 15, 2019, 9 a.m. | 3.3 ppb (3) | -0.1 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 17.0 ppb (13) | 0.31 ppb (3) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| July 15, 2019, 8 a.m. | 3.4 ppb (3) | -0.1 ppb (0) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 18.0 ppb (14) | 0.32 ppb (4) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| July 15, 2019, 7 a.m. | 4.6 ppb (4) | -0.1 ppb (0) | N/A | 5.0 ppb (5) | N/A | 0.0 ppb (0) | 18.0 ppb (14) | 0.33 ppb (4) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| July 15, 2019, 6 a.m. | 3.6 ppb (3) | -0.1 ppb (0) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 20.0 ppb (15) | 0.33 ppb (4) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| July 15, 2019, 5 a.m. | 4.4 ppb (4) | -0.1 ppb (0) | N/A | 5.0 ppb (5) | N/A | 0.0 ppb (0) | 21.0 ppb (16) | 0.34 ppb (4) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| July 15, 2019, 4 a.m. | 3.8 ppb (4) | -0.2 ppb (0) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 23.0 ppb (18) | 0.31 ppb (3) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| July 15, 2019, 3 a.m. | 3.7 ppb (3) | -0.1 ppb (0) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 26.0 ppb (20) | 0.33 ppb (4) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| July 15, 2019, 2 a.m. | 3.2 ppb (3) | 0.1 ppb (0) | N/A | 3.0 ppb (3) | N/A | 1.0 ppb (1) | 30.0 ppb (23) | 0.33 ppb (4) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| July 15, 2019, 1 a.m. | 3.4 ppb (3) | 0.2 ppb (0) | N/A | 3.0 ppb (3) | N/A | 1.0 ppb (1) | 34.0 ppb (26) | 0.34 ppb (4) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| July 15, 2019, midnight | 2.1 ppb (2) | 0.1 ppb (0) | N/A | 2.0 ppb (2) | N/A | 1.0 ppb (1) | 38.0 ppb (29) | 0.33 ppb (4) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| July 14, 2019, 11 p.m. | 1.9 ppb (2) | 0.0 ppb (0) | N/A | 2.0 ppb (2) | N/A | 1.0 ppb (1) | 39.0 ppb (30) | 0.33 ppb (4) | N/A | 6.0 μg/m3 (25) | 30.0 | |
| July 14, 2019, 10 p.m. | 2.0 ppb (2) | 0.0 ppb (0) | N/A | 2.0 ppb (2) | N/A | 1.0 ppb (1) | 41.0 ppb (32) | 0.32 ppb (4) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| July 14, 2019, 9 p.m. | 2.2 ppb (2) | 0.1 ppb (0) | N/A | 2.0 ppb (2) | N/A | 1.0 ppb (1) | 40.0 ppb (31) | 0.32 ppb (4) | N/A | 7.0 μg/m3 (29) | 31.0 | |
| July 14, 2019, 8 p.m. | 2.1 ppb (2) | 0.2 ppb (0) | N/A | 2.0 ppb (2) | N/A | 1.0 ppb (1) | 37.0 ppb (28) | 0.32 ppb (4) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| July 14, 2019, 7 p.m. | 2.2 ppb (2) | 0.3 ppb (0) | N/A | 2.0 ppb (2) | N/A | 1.0 ppb (1) | 34.0 ppb (26) | 0.31 ppb (3) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| July 14, 2019, 6 p.m. | 1.9 ppb (2) | 0.3 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 32.0 ppb (25) | 0.3 ppb (3) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| July 14, 2019, 5 p.m. | 1.6 ppb (1) | 0.3 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 27.0 ppb (21) | 0.29 ppb (3) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| July 14, 2019, 4 p.m. | 2.2 ppb (2) | 0.6 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 21.0 ppb (16) | 0.3 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| July 14, 2019, 3 p.m. | 2.1 ppb (2) | 0.6 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 19.0 ppb (15) | 0.29 ppb (3) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| July 14, 2019, 2 p.m. | 2.2 ppb (2) | 0.4 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 17.0 ppb (13) | 0.29 ppb (3) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| July 14, 2019, 1 p.m. | 2.2 ppb (2) | 0.0 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 18.0 ppb (14) | 0.28 ppb (3) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| July 14, 2019, noon | 2.2 ppb (2) | -0.1 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 18.0 ppb (14) | 0.27 ppb (3) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| July 14, 2019, 11 a.m. | 2.1 ppb (2) | -0.1 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 18.0 ppb (14) | 0.27 ppb (3) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| July 14, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 μg/m3 (38) | 38.0 | |
| July 14, 2019, 9 a.m. | 2.0 ppb (2) | -0.1 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 18.0 ppb (14) | 0.28 ppb (3) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| July 14, 2019, 8 a.m. | 2.7 ppb (3) | -0.1 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 16.0 ppb (12) | 0.29 ppb (3) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| July 14, 2019, 7 a.m. | 4.3 ppb (4) | -0.1 ppb (0) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 16.0 ppb (12) | 0.33 ppb (4) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| July 14, 2019, 6 a.m. | 5.1 ppb (5) | -0.1 ppb (0) | N/A | 5.0 ppb (5) | N/A | 0.0 ppb (0) | 16.0 ppb (12) | 0.34 ppb (4) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| July 14, 2019, 5 a.m. | 5.4 ppb (5) | -0.1 ppb (0) | N/A | 6.0 ppb (6) | N/A | 1.0 ppb (1) | 17.0 ppb (13) | 0.34 ppb (4) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| July 14, 2019, 4 a.m. | 3.9 ppb (4) | -0.1 ppb (0) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 21.0 ppb (16) | 0.32 ppb (4) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| July 14, 2019, 3 a.m. | 3.8 ppb (4) | -0.1 ppb (0) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 23.0 ppb (18) | 0.31 ppb (3) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| July 14, 2019, 2 a.m. | 4.7 ppb (4) | 0.3 ppb (0) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 25.0 ppb (19) | 0.34 ppb (4) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| July 14, 2019, 1 a.m. | 4.2 ppb (4) | 0.5 ppb (0) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 32.0 ppb (25) | 0.34 ppb (4) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| July 14, 2019, midnight | 3.7 ppb (3) | 0.3 ppb (0) | N/A | 3.0 ppb (3) | N/A | 1.0 ppb (1) | 40.0 ppb (31) | 0.34 ppb (4) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| July 13, 2019, 11 p.m. | 3.9 ppb (4) | 0.2 ppb (0) | N/A | 4.0 ppb (4) | N/A | 1.0 ppb (1) | 46.0 ppb (35) | 0.36 ppb (4) | N/A | 5.0 μg/m3 (21) | 35.0 | |
| July 13, 2019, 10 p.m. | 3.2 ppb (3) | 0.1 ppb (0) | N/A | 3.0 ppb (3) | N/A | 1.0 ppb (1) | 48.0 ppb (37) | 0.36 ppb (4) | N/A | 4.0 μg/m3 (17) | 37.0 | |
| July 13, 2019, 9 p.m. | 2.5 ppb (2) | 0.0 ppb (0) | N/A | 3.0 ppb (3) | N/A | 1.0 ppb (1) | 45.0 ppb (35) | 0.35 ppb (4) | N/A | 7.0 μg/m3 (29) | 35.0 | |
| July 13, 2019, 8 p.m. | 3.2 ppb (3) | 0.2 ppb (0) | N/A | 3.0 ppb (3) | N/A | 1.0 ppb (1) | 44.0 ppb (34) | 0.37 ppb (4) | N/A | 6.0 μg/m3 (25) | 34.0 | |
| July 13, 2019, 7 p.m. | 2.9 ppb (3) | 0.3 ppb (0) | N/A | 3.0 ppb (3) | N/A | 1.0 ppb (1) | 36.0 ppb (28) | 0.34 ppb (4) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| July 13, 2019, 6 p.m. | 2.9 ppb (3) | 0.6 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 28.0 ppb (22) | 0.33 ppb (4) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| July 13, 2019, 5 p.m. | 2.9 ppb (3) | 0.9 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 22.0 ppb (17) | 0.32 ppb (4) | N/A | 3.0 μg/m3 (12) | 17.0 | |
| July 13, 2019, 4 p.m. | 2.9 ppb (3) | 1.1 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 17.0 ppb (13) | 0.31 ppb (3) | N/A | 3.0 μg/m3 (12) | 13.0 | |
| July 13, 2019, 3 p.m. | 3.0 ppb (3) | 1.2 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 14.0 ppb (11) | 0.31 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| July 13, 2019, 2 p.m. | 2.3 ppb (2) | 0.7 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 13.0 ppb (10) | 0.29 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| July 13, 2019, 1 p.m. | 1.9 ppb (2) | 0.1 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 13.0 ppb (10) | 0.28 ppb (3) | N/A | 2.0 μg/m3 (8) | 10.0 | |
| July 13, 2019, noon | 1.5 ppb (1) | -0.1 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 14.0 ppb (11) | 0.28 ppb (3) | N/A | 2.0 μg/m3 (8) | 11.0 | |
| July 13, 2019, 11 a.m. | 1.3 ppb (1) | -0.1 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 14.0 ppb (11) | 0.27 ppb (3) | N/A | 1.0 μg/m3 (4) | 11.0 | |
| July 13, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 μg/m3 (17) | 17.0 | |
| July 13, 2019, 9 a.m. | 2.4 ppb (2) | -0.1 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 13.0 ppb (10) | 0.29 ppb (3) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| July 13, 2019, 8 a.m. | 2.1 ppb (2) | -0.1 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 14.0 ppb (11) | 0.29 ppb (3) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| July 13, 2019, 7 a.m. | 2.5 ppb (2) | -0.1 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 14.0 ppb (11) | 0.3 ppb (3) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| July 13, 2019, 6 a.m. | 3.0 ppb (3) | -0.1 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 14.0 ppb (11) | 0.31 ppb (3) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| July 13, 2019, 5 a.m. | 4.0 ppb (4) | -0.1 ppb (0) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 14.0 ppb (11) | 0.33 ppb (4) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| July 13, 2019, 4 a.m. | 4.8 ppb (4) | -0.1 ppb (0) | N/A | 5.0 ppb (5) | N/A | 0.0 ppb (0) | 14.0 ppb (11) | 0.35 ppb (4) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| July 13, 2019, 3 a.m. | 4.7 ppb (4) | -0.1 ppb (0) | N/A | 5.0 ppb (5) | N/A | 1.0 ppb (1) | 17.0 ppb (13) | 0.34 ppb (4) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| July 13, 2019, 2 a.m. | 5.5 ppb (5) | 0.6 ppb (1) | N/A | 5.0 ppb (5) | N/A | 1.0 ppb (1) | 19.0 ppb (15) | 0.35 ppb (4) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| July 13, 2019, 1 a.m. | 8.4 ppb (8) | 2.0 ppb (2) | N/A | 7.0 ppb (6) | N/A | 1.0 ppb (1) | 20.0 ppb (15) | 0.37 ppb (4) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| July 13, 2019, midnight | 6.5 ppb (6) | 1.3 ppb (1) | N/A | 5.0 ppb (5) | N/A | 0.0 ppb (0) | 29.0 ppb (22) | 0.37 ppb (4) | N/A | 4.0 μg/m3 (17) | 22.0 | |
| July 12, 2019, 11 p.m. | 2.8 ppb (3) | 0.1 ppb (0) | N/A | 3.0 ppb (3) | N/A | 1.0 ppb (1) | 42.0 ppb (32) | 0.35 ppb (4) | N/A | 5.0 μg/m3 (21) | 32.0 | |
| July 12, 2019, 10 p.m. | 4.0 ppb (4) | 0.1 ppb (0) | N/A | 4.0 ppb (4) | N/A | 1.0 ppb (1) | 51.0 ppb (39) | 0.38 ppb (4) | N/A | 7.0 μg/m3 (29) | 39.0 | |
| July 12, 2019, 9 p.m. | 4.4 ppb (4) | 0.1 ppb (0) | N/A | 4.0 ppb (4) | N/A | 1.0 ppb (1) | 54.0 ppb (42) | 0.41 ppb (5) | N/A | 6.0 μg/m3 (25) | 42.0 | |
| July 12, 2019, 8 p.m. | 4.4 ppb (4) | 0.3 ppb (0) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 48.0 ppb (37) | 0.39 ppb (4) | N/A | 5.0 μg/m3 (21) | 37.0 | |
| July 12, 2019, 7 p.m. | 4.7 ppb (4) | 0.7 ppb (1) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 37.0 ppb (28) | 0.39 ppb (4) | N/A | 3.0 μg/m3 (12) | 28.0 | |
| July 12, 2019, 6 p.m. | 3.9 ppb (4) | 0.9 ppb (1) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 27.0 ppb (21) | 0.36 ppb (4) | N/A | 4.0 μg/m3 (17) | 21.0 | |
| July 12, 2019, 5 p.m. | 3.9 ppb (4) | 1.3 ppb (1) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 19.0 ppb (15) | 0.34 ppb (4) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| July 12, 2019, 4 p.m. | 5.3 ppb (5) | 2.5 ppb (2) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 13.0 ppb (10) | 0.34 ppb (4) | N/A | N/A | 10.0 | |
| July 12, 2019, 3 p.m. | 4.8 ppb (4) | 2.2 ppb (2) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 12.0 ppb (9) | 0.31 ppb (3) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| July 12, 2019, 2 p.m. | 4.1 ppb (4) | 1.6 ppb (1) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 11.0 ppb (8) | 0.29 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| July 12, 2019, 1 p.m. | 3.4 ppb (3) | 0.5 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 9.0 ppb (7) | 0.28 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| July 12, 2019, noon | 2.7 ppb (3) | 0.0 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 10.0 ppb (8) | 0.28 ppb (3) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| July 12, 2019, 11 a.m. | 2.3 ppb (2) | 0.0 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 11.0 ppb (8) | 0.27 ppb (3) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| July 12, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 μg/m3 (17) | 17.0 | |
| July 12, 2019, 9 a.m. | 2.7 ppb (3) | -0.1 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 11.0 ppb (8) | 0.28 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| July 12, 2019, 8 a.m. | 2.9 ppb (3) | -0.1 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 11.0 ppb (8) | 0.28 ppb (3) | N/A | 2.0 μg/m3 (8) | 8.0 | |
| July 12, 2019, 7 a.m. | 3.2 ppb (3) | -0.1 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 12.0 ppb (9) | 0.28 ppb (3) | N/A | 2.0 μg/m3 (8) | 9.0 | |
| July 12, 2019, 6 a.m. | 3.3 ppb (3) | -0.1 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 12.0 ppb (9) | 0.29 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| July 12, 2019, 5 a.m. | 3.1 ppb (3) | -0.1 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 14.0 ppb (11) | 0.29 ppb (3) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| July 12, 2019, 4 a.m. | 4.1 ppb (4) | -0.1 ppb (0) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 14.0 ppb (11) | 0.31 ppb (3) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| July 12, 2019, 3 a.m. | 3.7 ppb (3) | 0.0 ppb (0) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 16.0 ppb (12) | 0.33 ppb (4) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| July 12, 2019, 2 a.m. | 4.0 ppb (4) | 0.5 ppb (0) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 18.0 ppb (14) | 0.33 ppb (4) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| July 12, 2019, 1 a.m. | 5.1 ppb (5) | 1.2 ppb (1) | N/A | 4.0 ppb (4) | N/A | 1.0 ppb (1) | 21.0 ppb (16) | 0.34 ppb (4) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| July 12, 2019, midnight | 2.4 ppb (2) | 0.5 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 21.0 ppb (16) | 0.3 ppb (3) | N/A | 2.0 μg/m3 (8) | 16.0 | |
| July 11, 2019, 11 p.m. | 0.9 ppb (1) | 0.1 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 21.0 ppb (16) | 0.27 ppb (3) | N/A | 3.0 μg/m3 (12) | 16.0 | |
| July 11, 2019, 10 p.m. | 1.1 ppb (1) | 0.1 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 22.0 ppb (17) | 0.28 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| July 11, 2019, 9 p.m. | 1.4 ppb (1) | 0.1 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 26.0 ppb (20) | 0.28 ppb (3) | N/A | 4.0 μg/m3 (17) | 20.0 | |
| July 11, 2019, 8 p.m. | 1.8 ppb (2) | 0.2 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 28.0 ppb (22) | 0.29 ppb (3) | N/A | 4.0 μg/m3 (17) | 22.0 | |
| July 11, 2019, 7 p.m. | 2.1 ppb (2) | 0.3 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 27.0 ppb (21) | 0.29 ppb (3) | N/A | 4.0 μg/m3 (17) | 21.0 | |
| July 11, 2019, 6 p.m. | 3.7 ppb (3) | 1.3 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 23.0 ppb (18) | 0.31 ppb (3) | N/A | 2.0 μg/m3 (8) | 18.0 | |
| July 11, 2019, 5 p.m. | 3.7 ppb (3) | 1.3 ppb (1) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 18.0 ppb (14) | 0.32 ppb (4) | N/A | 1.0 μg/m3 (4) | 14.0 | |
| July 11, 2019, 4 p.m. | 4.7 ppb (4) | 2.2 ppb (2) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 13.0 ppb (10) | 0.3 ppb (3) | N/A | 2.0 μg/m3 (8) | 10.0 | |
| July 11, 2019, 3 p.m. | 4.5 ppb (4) | 2.2 ppb (2) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 11.0 ppb (8) | 0.3 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| July 11, 2019, 2 p.m. | 4.7 ppb (4) | 2.0 ppb (2) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 9.0 ppb (7) | 0.3 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| July 11, 2019, 1 p.m. | 4.5 ppb (4) | 0.8 ppb (1) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 7.0 ppb (5) | 0.29 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| July 11, 2019, noon | 3.8 ppb (4) | 0.0 ppb (0) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 7.0 ppb (5) | 0.28 ppb (3) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| July 11, 2019, 11 a.m. | 3.4 ppb (3) | 0.0 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 8.0 ppb (6) | 0.28 ppb (3) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| July 11, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 μg/m3 (17) | 17.0 | |
| July 11, 2019, 9 a.m. | 4.6 ppb (4) | 0.0 ppb (0) | N/A | 5.0 ppb (5) | N/A | 0.0 ppb (0) | 9.0 ppb (7) | 0.29 ppb (3) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| July 11, 2019, 8 a.m. | 6.0 ppb (6) | 0.0 ppb (0) | N/A | 6.0 ppb (6) | N/A | 0.0 ppb (0) | 8.0 ppb (6) | 0.3 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| July 11, 2019, 7 a.m. | 5.7 ppb (5) | 0.0 ppb (0) | N/A | 6.0 ppb (6) | N/A | 0.0 ppb (0) | 9.0 ppb (7) | 0.29 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| July 11, 2019, 6 a.m. | 3.8 ppb (4) | -0.1 ppb (0) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 11.0 ppb (8) | 0.28 ppb (3) | N/A | 2.0 μg/m3 (8) | 8.0 | |
| July 11, 2019, 5 a.m. | 4.8 ppb (4) | -0.1 ppb (0) | N/A | 5.0 ppb (5) | N/A | 1.0 ppb (1) | 11.0 ppb (8) | 0.29 ppb (3) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| July 11, 2019, 4 a.m. | 6.8 ppb (6) | -0.1 ppb (0) | N/A | 7.0 ppb (6) | N/A | 1.0 ppb (1) | 9.0 ppb (7) | 0.31 ppb (3) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| July 11, 2019, 3 a.m. | 6.9 ppb (6) | 0.2 ppb (0) | N/A | 7.0 ppb (6) | N/A | 1.0 ppb (1) | 10.0 ppb (8) | 0.33 ppb (4) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| July 11, 2019, 2 a.m. | 3.9 ppb (4) | 0.4 ppb (0) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 18.0 ppb (14) | 0.3 ppb (3) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| July 11, 2019, 1 a.m. | 1.8 ppb (2) | 0.2 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 23.0 ppb (18) | 0.29 ppb (3) | N/A | 1.0 μg/m3 (4) | 18.0 | |
| July 11, 2019, midnight | 1.2 ppb (1) | 0.1 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 25.0 ppb (19) | 0.27 ppb (3) | N/A | 2.0 μg/m3 (8) | 19.0 | |
| July 10, 2019, 11 p.m. | 1.1 ppb (1) | 0.1 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 27.0 ppb (21) | 0.27 ppb (3) | N/A | 3.0 μg/m3 (12) | 21.0 | |
| July 10, 2019, 10 p.m. | 1.2 ppb (1) | 0.1 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 28.0 ppb (22) | 0.27 ppb (3) | N/A | 4.0 μg/m3 (17) | 22.0 | |
| July 10, 2019, 9 p.m. | 1.1 ppb (1) | 0.1 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | 29.0 ppb (22) | 0.26 ppb (3) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| July 10, 2019, 8 p.m. | 3.3 ppb (3) | 0.7 ppb (1) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 30.0 ppb (23) | 0.31 ppb (3) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| July 10, 2019, 7 p.m. | 8.7 ppb (8) | 3.7 ppb (3) | N/A | 5.0 ppb (5) | N/A | 1.0 ppb (1) | 18.0 ppb (14) | 0.36 ppb (4) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| July 10, 2019, 6 p.m. | 8.1 ppb (8) | 4.1 ppb (4) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 14.0 ppb (11) | 0.35 ppb (4) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| July 10, 2019, 5 p.m. | 7.6 ppb (7) | 4.2 ppb (4) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 11.0 ppb (8) | 0.33 ppb (4) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| July 10, 2019, 4 p.m. | 6.8 ppb (6) | 3.3 ppb (3) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 10.0 ppb (8) | 0.32 ppb (4) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| July 10, 2019, 3 p.m. | 4.8 ppb (4) | 1.4 ppb (1) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 9.0 ppb (7) | 0.32 ppb (4) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| July 10, 2019, 2 p.m. | 3.8 ppb (4) | 0.9 ppb (1) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 9.0 ppb (7) | 0.3 ppb (3) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| July 10, 2019, 1 p.m. | 2.4 ppb (2) | 0.1 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 10.0 ppb (8) | 0.27 ppb (3) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| July 10, 2019, noon | 2.2 ppb (2) | 0.0 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 10.0 ppb (8) | 0.27 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| July 10, 2019, 11 a.m. | 1.8 ppb (2) | 0.0 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 10.0 ppb (8) | 0.27 ppb (3) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| July 10, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 μg/m3 (4) | 4.0 | |
| July 10, 2019, 9 a.m. | 2.1 ppb (2) | 0.0 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 11.0 ppb (8) | 0.27 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 |