LA (Chavez Ravine Place) CA, US: 34.0669, -118.2417
| Date Observed (UTC) | NOX | NO | NOY | NO2 | NO2Y | SO2 | OZONE | CO | PM10 | PM2.5 | AQI | AQI/500 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| May 25, 2019, 9 p.m. | 7.5 ppb (7) | 1.3 ppb (1) | 8.3 ppb (8) | 6.0 ppb (6) | 6.7 ppb (6) | 0.0 ppb (0) | 42.0 ppb (32) | 0.2 ppb (2) | 24.0 μg/m3 (22) | 14.0 μg/m3 (54) | 54.0 | |
| May 25, 2019, 8 p.m. | 10.4 ppb (10) | 1.9 ppb (2) | 11.8 ppb (11) | 8.0 ppb (7) | 9.6 ppb (9) | 0.0 ppb (0) | 44.0 ppb (34) | 0.24 ppb (3) | 30.0 μg/m3 (27) | 18.0 μg/m3 (63) | 63.0 | |
| May 25, 2019, 7 p.m. | 12.5 ppb (12) | 2.9 ppb (3) | 14.2 ppb (13) | 10.0 ppb (9) | 10.9 ppb (10) | 0.0 ppb (0) | 39.0 ppb (30) | 0.25 ppb (3) | 29.0 μg/m3 (26) | 16.0 μg/m3 (59) | 59.0 | |
| May 25, 2019, 6 p.m. | 13.7 ppb (13) | 3.6 ppb (3) | 15.4 ppb (14) | 10.0 ppb (9) | 11.4 ppb (11) | 0.0 ppb (0) | 32.0 ppb (25) | 0.24 ppb (3) | 32.0 μg/m3 (29) | 12.0 μg/m3 (50) | 50.0 | |
| May 25, 2019, 5 p.m. | 13.7 ppb (13) | 3.5 ppb (3) | 15.4 ppb (14) | 10.0 ppb (9) | 11.7 ppb (11) | 0.0 ppb (0) | 28.0 ppb (22) | 0.25 ppb (3) | 22.0 μg/m3 (20) | 10.0 μg/m3 (42) | 42.0 | |
| May 25, 2019, 4 p.m. | 23.7 ppb (22) | 7.9 ppb (7) | 25.1 ppb (23) | 16.0 ppb (15) | 16.8 ppb (16) | 0.0 ppb (0) | 21.0 ppb (16) | 0.32 ppb (4) | 30.0 μg/m3 (27) | 16.0 μg/m3 (59) | 59.0 | |
| May 25, 2019, 3 p.m. | 36.2 ppb (34) | 14.8 ppb (14) | 36.7 ppb (34) | 21.0 ppb (19) | 21.2 ppb (20) | 1.0 ppb (1) | 13.0 ppb (10) | 0.35 ppb (4) | 33.0 μg/m3 (30) | 21.0 μg/m3 (69) | 69.0 | |
| May 25, 2019, 2 p.m. | 33.6 ppb (31) | 14.1 ppb (13) | 34.6 ppb (32) | 19.0 ppb (18) | 18.8 ppb (17) | 0.0 ppb (0) | 10.0 ppb (8) | 0.38 ppb (4) | 38.0 μg/m3 (35) | 18.0 μg/m3 (63) | 63.0 | |
| May 25, 2019, 1 p.m. | 49.7 ppb (46) | 29.8 ppb (28) | 42.7 ppb (40) | 20.0 ppb (19) | 14.5 ppb (13) | 0.0 ppb (0) | 2.0 ppb (2) | 0.55 ppb (6) | 30.0 μg/m3 (27) | 17.0 μg/m3 (61) | 61.0 | |
| May 25, 2019, noon | 35.8 ppb (33) | 15.6 ppb (14) | 31.2 ppb (29) | 20.0 ppb (19) | 20.4 ppb (19) | 0.0 ppb (0) | 1.0 ppb (1) | 0.52 ppb (6) | 23.0 μg/m3 (21) | 9.0 μg/m3 (38) | 38.0 | |
| May 25, 2019, 11 a.m. | 26.7 ppb (25) | 6.4 ppb (6) | 23.9 ppb (22) | 20.0 ppb (19) | 18.7 ppb (17) | 0.0 ppb (0) | 3.0 ppb (2) | 0.39 ppb (4) | 21.0 μg/m3 (19) | 10.0 μg/m3 (42) | 42.0 | |
| May 25, 2019, 10 a.m. | 22.8 ppb (21) | 2.3 ppb (2) | 22.7 ppb (21) | 20.0 ppb (19) | 21.7 ppb (20) | 0.0 ppb (0) | 5.0 ppb (4) | 0.35 ppb (4) | 20.0 μg/m3 (18) | 10.0 μg/m3 (42) | 42.0 | |
| May 25, 2019, 9 a.m. | 24.2 ppb (22) | 2.1 ppb (2) | 21.9 ppb (20) | 22.0 ppb (20) | 21.0 ppb (19) | 0.0 ppb (0) | 6.0 ppb (5) | 0.28 ppb (3) | 21.0 μg/m3 (19) | 7.0 μg/m3 (29) | 29.0 | |
| May 25, 2019, 8 a.m. | 15.0 ppb (14) | 1.0 ppb (1) | 15.1 ppb (14) | 14.0 ppb (13) | 14.4 ppb (13) | 0.0 ppb (0) | 18.0 ppb (14) | 0.18 ppb (2) | 31.0 μg/m3 (28) | 8.0 μg/m3 (33) | 33.0 | |
| May 25, 2019, 7 a.m. | 14.0 ppb (13) | 0.5 ppb (0) | 14.4 ppb (13) | 13.0 ppb (12) | 14.3 ppb (13) | 0.0 ppb (0) | 18.0 ppb (14) | 0.24 ppb (3) | 20.0 μg/m3 (18) | 7.0 μg/m3 (29) | 29.0 | |
| May 25, 2019, 6 a.m. | 19.6 ppb (18) | 0.8 ppb (1) | 20.7 ppb (19) | 19.0 ppb (18) | 20.4 ppb (19) | 0.0 ppb (0) | 18.0 ppb (14) | 0.23 ppb (3) | 17.0 μg/m3 (15) | 10.0 μg/m3 (42) | 42.0 | |
| May 25, 2019, 5 a.m. | 17.0 ppb (16) | 0.7 ppb (1) | 18.3 ppb (17) | 16.0 ppb (15) | 17.8 ppb (16) | 0.0 ppb (0) | 20.0 ppb (15) | 0.21 ppb (2) | 20.0 μg/m3 (18) | 5.0 μg/m3 (21) | 21.0 | |
| May 25, 2019, 4 a.m. | 15.3 ppb (14) | 0.8 ppb (1) | 15.7 ppb (15) | 15.0 ppb (14) | 15.0 ppb (14) | 0.0 ppb (0) | 21.0 ppb (16) | 0.22 ppb (2) | 23.0 μg/m3 (21) | 5.0 μg/m3 (21) | 21.0 | |
| May 25, 2019, 3 a.m. | 11.1 ppb (10) | 0.5 ppb (0) | 11.6 ppb (11) | 11.0 ppb (10) | 10.7 ppb (10) | 0.0 ppb (0) | 26.0 ppb (20) | 0.18 ppb (2) | 19.0 μg/m3 (17) | 4.0 μg/m3 (17) | 20.0 | |
| May 25, 2019, 2 a.m. | 6.7 ppb (6) | 0.1 ppb (0) | 7.1 ppb (7) | 7.0 ppb (6) | 6.8 ppb (6) | 0.0 ppb (0) | 32.0 ppb (25) | 0.17 ppb (2) | 16.0 μg/m3 (15) | 6.0 μg/m3 (25) | 25.0 | |
| May 25, 2019, 1 a.m. | 5.7 ppb (5) | 0.6 ppb (1) | 6.1 ppb (6) | 5.0 ppb (5) | 5.2 ppb (5) | 0.0 ppb (0) | 35.0 ppb (27) | 0.19 ppb (2) | 14.0 μg/m3 (13) | 9.0 μg/m3 (38) | 38.0 | |
| May 25, 2019, midnight | 5.1 ppb (5) | 0.8 ppb (1) | 5.7 ppb (5) | 4.0 ppb (4) | 4.6 ppb (4) | 0.0 ppb (0) | 36.0 ppb (28) | 0.18 ppb (2) | 14.0 μg/m3 (13) | 8.0 μg/m3 (33) | 33.0 | |
| May 24, 2019, 11 p.m. | 6.3 ppb (6) | 1.2 ppb (1) | 6.8 ppb (6) | 5.0 ppb (5) | 5.3 ppb (5) | 0.0 ppb (0) | 37.0 ppb (28) | 0.19 ppb (2) | 18.0 μg/m3 (16) | 6.0 μg/m3 (25) | 28.0 | |
| May 24, 2019, 10 p.m. | 6.8 ppb (6) | 1.4 ppb (1) | 7.4 ppb (7) | 5.0 ppb (5) | 5.6 ppb (5) | 0.0 ppb (0) | 38.0 ppb (29) | 0.19 ppb (2) | 21.0 μg/m3 (19) | 7.0 μg/m3 (29) | 29.0 | |
| May 24, 2019, 9 p.m. | 8.3 ppb (8) | 2.0 ppb (2) | 8.9 ppb (8) | 6.0 ppb (6) | 6.4 ppb (6) | 0.0 ppb (0) | 37.0 ppb (28) | 0.2 ppb (2) | 19.0 μg/m3 (17) | 8.0 μg/m3 (33) | 33.0 | |
| May 24, 2019, 8 p.m. | 7.6 ppb (7) | 1.8 ppb (2) | 8.4 ppb (8) | 6.0 ppb (6) | 6.3 ppb (6) | 0.0 ppb (0) | 37.0 ppb (28) | 0.2 ppb (2) | 21.0 μg/m3 (19) | 9.0 μg/m3 (38) | 38.0 | |
| May 24, 2019, 7 p.m. | 9.6 ppb (9) | 2.3 ppb (2) | 10.4 ppb (10) | 7.0 ppb (6) | 7.8 ppb (7) | 0.0 ppb (0) | 36.0 ppb (28) | 0.21 ppb (2) | 27.0 μg/m3 (25) | 10.0 μg/m3 (42) | 42.0 | |
| May 24, 2019, 6 p.m. | 14.5 ppb (13) | 4.2 ppb (4) | 15.5 ppb (14) | 10.0 ppb (9) | 10.9 ppb (10) | 0.0 ppb (0) | 33.0 ppb (25) | 0.28 ppb (3) | 26.0 μg/m3 (24) | 12.0 μg/m3 (50) | 50.0 | |
| May 24, 2019, 5 p.m. | 24.3 ppb (23) | 8.7 ppb (8) | 24.3 ppb (23) | 16.0 ppb (15) | 15.4 ppb (14) | 0.0 ppb (0) | 26.0 ppb (20) | 0.38 ppb (4) | 28.0 μg/m3 (25) | 13.0 μg/m3 (52) | 52.0 | |
| May 24, 2019, 4 p.m. | N/A | N/A | 37.7 ppb (35) | N/A | 19.0 ppb (18) | N/A | N/A | N/A | 32.0 μg/m3 (29) | 15.0 μg/m3 (56) | 56.0 | |
| May 24, 2019, 3 p.m. | N/A | N/A | 30.7 ppb (28) | N/A | 14.6 ppb (14) | N/A | N/A | N/A | 28.0 μg/m3 (25) | 17.0 μg/m3 (61) | 61.0 | |
| May 24, 2019, 2 p.m. | 39.4 ppb (36) | 20.9 ppb (19) | 37.3 ppb (35) | 18.0 ppb (17) | 16.2 ppb (15) | 0.0 ppb (0) | 7.0 ppb (5) | 0.41 ppb (5) | 22.0 μg/m3 (20) | 12.0 μg/m3 (50) | 50.0 | |
| May 24, 2019, 1 p.m. | 54.0 ppb (50) | 35.5 ppb (33) | 45.4 ppb (42) | 18.0 ppb (17) | 12.4 ppb (11) | 0.0 ppb (0) | 2.0 ppb (2) | 0.6 ppb (7) | 25.0 μg/m3 (23) | 13.0 μg/m3 (52) | 52.0 | |
| May 24, 2019, noon | 49.6 ppb (46) | 29.7 ppb (28) | 41.3 ppb (38) | 20.0 ppb (19) | 19.8 ppb (18) | 0.0 ppb (0) | 1.0 ppb (1) | 0.49 ppb (5) | 27.0 μg/m3 (25) | 12.0 μg/m3 (50) | 50.0 | |
| May 24, 2019, 11 a.m. | 37.9 ppb (35) | 18.7 ppb (17) | 33.5 ppb (31) | 19.0 ppb (18) | 17.0 ppb (16) | 0.0 ppb (0) | 1.0 ppb (1) | 0.42 ppb (5) | 23.0 μg/m3 (21) | 16.0 μg/m3 (59) | 59.0 | |
| May 24, 2019, 10 a.m. | 36.4 ppb (34) | 17.9 ppb (17) | 34.5 ppb (32) | 18.0 ppb (17) | 18.8 ppb (17) | 0.0 ppb (0) | 1.0 ppb (1) | 0.45 ppb (5) | 22.0 μg/m3 (20) | 9.0 μg/m3 (38) | 38.0 | |
| May 24, 2019, 9 a.m. | 38.7 ppb (36) | 19.8 ppb (18) | 32.5 ppb (30) | 19.0 ppb (18) | 17.0 ppb (16) | 0.0 ppb (0) | 1.0 ppb (1) | 0.51 ppb (6) | 24.0 μg/m3 (22) | 13.0 μg/m3 (52) | 52.0 | |
| May 24, 2019, 8 a.m. | 43.8 ppb (41) | 23.9 ppb (22) | 46.5 ppb (43) | 20.0 ppb (19) | 21.8 ppb (20) | 0.0 ppb (0) | 1.0 ppb (1) | 0.58 ppb (6) | 25.0 μg/m3 (23) | 16.0 μg/m3 (59) | 59.0 | |
| May 24, 2019, 7 a.m. | 39.5 ppb (37) | 14.4 ppb (13) | 44.4 ppb (41) | 25.0 ppb (23) | 26.1 ppb (24) | 0.0 ppb (0) | 1.0 ppb (1) | 0.53 ppb (6) | 40.0 μg/m3 (36) | 12.0 μg/m3 (50) | 50.0 | |
| May 24, 2019, 6 a.m. | 21.8 ppb (20) | 2.4 ppb (2) | 22.6 ppb (21) | 19.0 ppb (18) | 21.0 ppb (19) | 0.0 ppb (0) | 9.0 ppb (7) | 0.4 ppb (4) | 40.0 μg/m3 (36) | 15.0 μg/m3 (56) | 56.0 | |
| May 24, 2019, 5 a.m. | 18.2 ppb (17) | 1.9 ppb (2) | 18.5 ppb (17) | 16.0 ppb (15) | 17.6 ppb (16) | 0.0 ppb (0) | 13.0 ppb (10) | 0.37 ppb (4) | 67.0 μg/m3 (56) | 11.0 μg/m3 (46) | 56.0 | |
| May 24, 2019, 4 a.m. | 11.7 ppb (11) | 0.4 ppb (0) | 12.9 ppb (12) | 11.0 ppb (10) | 12.7 ppb (12) | 0.0 ppb (0) | 19.0 ppb (15) | 0.27 ppb (3) | 56.0 μg/m3 (50) | 8.0 μg/m3 (33) | 50.0 | |
| May 24, 2019, 3 a.m. | 14.0 ppb (13) | 0.8 ppb (1) | 14.4 ppb (13) | 13.0 ppb (12) | 14.0 ppb (13) | 0.0 ppb (0) | 17.0 ppb (13) | 0.28 ppb (3) | 46.0 μg/m3 (42) | 9.0 μg/m3 (38) | 42.0 | |
| May 24, 2019, 2 a.m. | 11.3 ppb (10) | 0.5 ppb (0) | 12.1 ppb (11) | 11.0 ppb (10) | 11.7 ppb (11) | 0.0 ppb (0) | 22.0 ppb (17) | 0.22 ppb (2) | 27.0 μg/m3 (25) | 10.0 μg/m3 (42) | 42.0 | |
| May 24, 2019, 1 a.m. | 16.3 ppb (15) | 1.0 ppb (1) | 16.8 ppb (16) | 15.0 ppb (14) | 16.0 ppb (15) | 0.0 ppb (0) | 20.0 ppb (15) | 0.26 ppb (3) | 34.0 μg/m3 (31) | 10.0 μg/m3 (42) | 42.0 | |
| May 24, 2019, midnight | 18.9 ppb (18) | 3.0 ppb (3) | 19.5 ppb (18) | 16.0 ppb (15) | 16.2 ppb (15) | 0.0 ppb (0) | 20.0 ppb (15) | 0.26 ppb (3) | 24.0 μg/m3 (22) | 11.0 μg/m3 (46) | 46.0 | |
| May 23, 2019, 11 p.m. | 11.1 ppb (10) | 0.9 ppb (1) | 11.8 ppb (11) | 10.0 ppb (9) | 10.8 ppb (10) | 0.0 ppb (0) | 26.0 ppb (20) | 0.18 ppb (2) | 22.0 μg/m3 (20) | 13.0 μg/m3 (52) | 52.0 | |
| May 23, 2019, 10 p.m. | 13.1 ppb (12) | 2.6 ppb (2) | 13.0 ppb (12) | 11.0 ppb (10) | 10.5 ppb (10) | 0.0 ppb (0) | 27.0 ppb (21) | 0.2 ppb (2) | 33.0 μg/m3 (30) | 10.0 μg/m3 (42) | 42.0 | |
| May 23, 2019, 9 p.m. | 17.5 ppb (16) | 2.0 ppb (2) | 17.5 ppb (16) | 15.0 ppb (14) | 15.6 ppb (14) | 0.0 ppb (0) | 25.0 ppb (19) | 0.22 ppb (2) | 30.0 μg/m3 (27) | 11.0 μg/m3 (46) | 46.0 | |
| May 23, 2019, 8 p.m. | 15.7 ppb (15) | 1.5 ppb (1) | 15.6 ppb (14) | 14.0 ppb (13) | 14.1 ppb (13) | 0.0 ppb (0) | 21.0 ppb (16) | 0.25 ppb (3) | 31.0 μg/m3 (28) | 10.0 μg/m3 (42) | 42.0 | |
| May 23, 2019, 7 p.m. | N/A | N/A | 14.4 ppb (13) | N/A | 11.3 ppb (10) | N/A | N/A | N/A | 47.0 μg/m3 (43) | 15.0 μg/m3 (56) | 56.0 | |
| May 23, 2019, 6 p.m. | N/A | N/A | 14.8 ppb (14) | N/A | 9.2 ppb (9) | N/A | N/A | N/A | 48.0 μg/m3 (44) | 17.0 μg/m3 (61) | 61.0 | |
| May 23, 2019, 5 p.m. | N/A | N/A | 27.2 ppb (25) | N/A | 15.8 ppb (15) | N/A | N/A | N/A | 34.0 μg/m3 (31) | 13.0 μg/m3 (52) | 52.0 | |
| May 23, 2019, 4 p.m. | 26.2 ppb (24) | 8.4 ppb (8) | 24.2 ppb (22) | 18.0 ppb (17) | 16.7 ppb (15) | 0.0 ppb (0) | 19.0 ppb (15) | 0.21 ppb (2) | 79.0 μg/m3 (62) | 17.0 μg/m3 (61) | 62.0 | |
| May 23, 2019, 3 p.m. | 28.9 ppb (27) | 7.1 ppb (7) | 25.7 ppb (24) | 22.0 ppb (20) | 19.3 ppb (18) | 0.0 ppb (0) | 17.0 ppb (13) | 0.22 ppb (2) | 30.0 μg/m3 (27) | 14.0 μg/m3 (54) | 54.0 | |
| May 23, 2019, 2 p.m. | 27.5 ppb (25) | 5.3 ppb (5) | 26.1 ppb (24) | 22.0 ppb (20) | 21.1 ppb (20) | 0.0 ppb (0) | 16.0 ppb (12) | 0.26 ppb (3) | 47.0 μg/m3 (43) | 12.0 μg/m3 (50) | 50.0 | |
| May 23, 2019, 1 p.m. | 29.1 ppb (27) | 5.9 ppb (5) | 24.0 ppb (22) | 23.0 ppb (21) | 18.5 ppb (17) | 0.0 ppb (0) | 14.0 ppb (11) | 0.26 ppb (3) | 34.0 μg/m3 (31) | 14.0 μg/m3 (54) | 54.0 | |
| May 23, 2019, noon | 27.1 ppb (25) | 3.9 ppb (4) | 24.7 ppb (23) | 23.0 ppb (21) | 21.7 ppb (20) | 0.0 ppb (0) | 12.0 ppb (9) | 0.28 ppb (3) | 27.0 μg/m3 (25) | 15.0 μg/m3 (56) | 56.0 | |
| May 23, 2019, 11 a.m. | 17.4 ppb (16) | 1.2 ppb (1) | 18.3 ppb (17) | 16.0 ppb (15) | 17.0 ppb (16) | 0.0 ppb (0) | 15.0 ppb (12) | 0.24 ppb (3) | 21.0 μg/m3 (19) | 11.0 μg/m3 (46) | 46.0 | |
| May 23, 2019, 10 a.m. | 11.0 ppb (10) | 0.4 ppb (0) | 10.9 ppb (10) | 11.0 ppb (10) | 10.5 ppb (10) | 0.0 ppb (0) | 23.0 ppb (18) | 0.18 ppb (2) | 19.0 μg/m3 (17) | 8.0 μg/m3 (33) | 33.0 | |
| May 23, 2019, 9 a.m. | 16.6 ppb (15) | 1.6 ppb (1) | 13.7 ppb (13) | 15.0 ppb (14) | 12.3 ppb (11) | 0.0 ppb (0) | 17.0 ppb (13) | 0.22 ppb (2) | 14.0 μg/m3 (13) | 9.0 μg/m3 (38) | 38.0 | |
| May 23, 2019, 8 a.m. | 17.4 ppb (16) | 0.4 ppb (0) | 18.7 ppb (17) | 17.0 ppb (16) | 18.0 ppb (17) | 0.0 ppb (0) | 15.0 ppb (12) | 0.25 ppb (3) | 14.0 μg/m3 (13) | 7.0 μg/m3 (29) | 29.0 | |
| May 23, 2019, 7 a.m. | 19.8 ppb (18) | 1.1 ppb (1) | 19.2 ppb (18) | 19.0 ppb (18) | 18.4 ppb (17) | 0.0 ppb (0) | 18.0 ppb (14) | 0.23 ppb (3) | 16.0 μg/m3 (15) | 8.0 μg/m3 (33) | 33.0 | |
| May 23, 2019, 6 a.m. | 16.4 ppb (15) | 0.2 ppb (0) | 17.0 ppb (16) | 16.0 ppb (15) | 16.9 ppb (16) | 0.0 ppb (0) | 23.0 ppb (18) | 0.24 ppb (3) | 10.0 μg/m3 (9) | 6.0 μg/m3 (25) | 25.0 | |
| May 23, 2019, 5 a.m. | 18.1 ppb (17) | 0.3 ppb (0) | 18.2 ppb (17) | 18.0 ppb (17) | 18.1 ppb (17) | 0.0 ppb (0) | 25.0 ppb (19) | 0.21 ppb (2) | 11.0 μg/m3 (10) | 7.0 μg/m3 (29) | 29.0 | |
| May 23, 2019, 4 a.m. | 28.6 ppb (26) | 8.1 ppb (8) | 34.7 ppb (32) | 19.0 ppb (18) | 26.0 ppb (24) | 0.0 ppb (0) | 25.0 ppb (19) | 0.23 ppb (3) | 13.0 μg/m3 (12) | 4.0 μg/m3 (17) | 32.0 | |
| May 23, 2019, 3 a.m. | 21.6 ppb (20) | 3.6 ppb (3) | 21.0 ppb (19) | 18.0 ppb (17) | 16.7 ppb (15) | 0.0 ppb (0) | 26.0 ppb (20) | 0.2 ppb (2) | 18.0 μg/m3 (16) | 6.0 μg/m3 (25) | 25.0 | |
| May 23, 2019, 2 a.m. | 14.8 ppb (14) | 0.7 ppb (1) | 14.8 ppb (14) | 14.0 ppb (13) | 14.0 ppb (13) | 0.0 ppb (0) | 33.0 ppb (25) | 0.2 ppb (2) | 12.0 μg/m3 (11) | 4.0 μg/m3 (17) | 25.0 | |
| May 23, 2019, 1 a.m. | 12.3 ppb (11) | 1.5 ppb (1) | 12.8 ppb (12) | 11.0 ppb (10) | 11.0 ppb (10) | 0.0 ppb (0) | 35.0 ppb (27) | 0.2 ppb (2) | 12.0 μg/m3 (11) | 5.0 μg/m3 (21) | 27.0 | |
| May 23, 2019, midnight | 12.8 ppb (12) | 2.2 ppb (2) | 12.6 ppb (12) | 11.0 ppb (10) | 10.1 ppb (9) | 0.0 ppb (0) | 34.0 ppb (26) | 0.2 ppb (2) | 9.0 μg/m3 (8) | 7.0 μg/m3 (29) | 29.0 | |
| May 22, 2019, 11 p.m. | 8.6 ppb (8) | 1.5 ppb (1) | 9.0 ppb (8) | 7.0 ppb (6) | 7.1 ppb (7) | 0.0 ppb (0) | 40.0 ppb (31) | 0.16 ppb (2) | 9.0 μg/m3 (8) | 5.0 μg/m3 (21) | 31.0 | |
| May 22, 2019, 10 p.m. | 9.9 ppb (9) | 1.6 ppb (1) | 9.6 ppb (9) | 8.0 ppb (7) | 8.0 ppb (7) | 0.0 ppb (0) | 35.0 ppb (27) | 0.18 ppb (2) | 12.0 μg/m3 (11) | 6.0 μg/m3 (25) | 27.0 | |
| May 22, 2019, 9 p.m. | 6.7 ppb (6) | 0.9 ppb (1) | 6.7 ppb (6) | 6.0 ppb (6) | 5.6 ppb (5) | 0.0 ppb (0) | 39.0 ppb (30) | 0.16 ppb (2) | 22.0 μg/m3 (20) | 6.0 μg/m3 (25) | 30.0 | |
| May 22, 2019, 8 p.m. | 5.7 ppb (5) | 1.2 ppb (1) | 6.4 ppb (6) | 4.0 ppb (4) | 4.9 ppb (5) | 0.0 ppb (0) | 41.0 ppb (32) | 0.15 ppb (2) | 16.0 μg/m3 (15) | 6.0 μg/m3 (25) | 32.0 | |
| May 22, 2019, 7 p.m. | 8.1 ppb (8) | 2.0 ppb (2) | 8.6 ppb (8) | 6.0 ppb (6) | 6.3 ppb (6) | 0.0 ppb (0) | 37.0 ppb (28) | 0.17 ppb (2) | 20.0 μg/m3 (18) | 5.0 μg/m3 (21) | 28.0 | |
| May 22, 2019, 6 p.m. | 11.8 ppb (11) | 3.2 ppb (3) | 11.8 ppb (11) | 9.0 ppb (8) | 8.2 ppb (8) | 0.0 ppb (0) | 34.0 ppb (26) | 0.19 ppb (2) | 19.0 μg/m3 (17) | 7.0 μg/m3 (29) | 29.0 | |
| May 22, 2019, 5 p.m. | 17.5 ppb (16) | 5.2 ppb (5) | 16.9 ppb (16) | 12.0 ppb (11) | 11.4 ppb (11) | 0.0 ppb (0) | 28.0 ppb (22) | 0.24 ppb (3) | 26.0 μg/m3 (24) | 10.0 μg/m3 (42) | 42.0 | |
| May 22, 2019, 4 p.m. | 21.7 ppb (20) | 7.7 ppb (7) | 21.4 ppb (20) | 14.0 ppb (13) | 13.4 ppb (12) | 0.0 ppb (0) | 24.0 ppb (18) | 0.27 ppb (3) | 26.0 μg/m3 (24) | 11.0 μg/m3 (46) | 46.0 | |
| May 22, 2019, 3 p.m. | 24.3 ppb (23) | 9.6 ppb (9) | 22.6 ppb (21) | 15.0 ppb (14) | 12.4 ppb (11) | 0.0 ppb (0) | 21.0 ppb (16) | 0.24 ppb (3) | 48.0 μg/m3 (44) | 19.0 μg/m3 (65) | 65.0 | |
| May 22, 2019, 2 p.m. | 31.5 ppb (29) | 12.1 ppb (11) | 28.1 ppb (26) | 19.0 ppb (18) | 15.5 ppb (14) | 0.0 ppb (0) | 15.0 ppb (12) | 0.28 ppb (3) | 51.0 μg/m3 (46) | 13.0 μg/m3 (52) | 52.0 | |
| May 22, 2019, 1 p.m. | 25.3 ppb (23) | 6.2 ppb (6) | 21.4 ppb (20) | 19.0 ppb (18) | 15.6 ppb (14) | 0.0 ppb (0) | 13.0 ppb (10) | 0.29 ppb (3) | 28.0 μg/m3 (25) | 8.0 μg/m3 (33) | 33.0 | |
| May 22, 2019, noon | 18.8 ppb (17) | 2.2 ppb (2) | 16.5 ppb (15) | 17.0 ppb (16) | 14.7 ppb (14) | 0.0 ppb (0) | 14.0 ppb (11) | 0.25 ppb (3) | 28.0 μg/m3 (25) | 11.0 μg/m3 (46) | 46.0 | |
| May 22, 2019, 11 a.m. | 17.6 ppb (16) | 1.6 ppb (1) | 15.0 ppb (14) | 16.0 ppb (15) | 14.1 ppb (13) | 0.0 ppb (0) | 14.0 ppb (11) | 0.2 ppb (2) | 31.0 μg/m3 (28) | 11.0 μg/m3 (46) | 46.0 | |
| May 22, 2019, 10 a.m. | 10.3 ppb (10) | 0.2 ppb (0) | 9.9 ppb (9) | 10.0 ppb (9) | 9.8 ppb (9) | 0.0 ppb (0) | 21.0 ppb (16) | 0.16 ppb (2) | 29.0 μg/m3 (26) | 14.0 μg/m3 (54) | 54.0 | |
| May 22, 2019, 9 a.m. | 18.7 ppb (17) | 1.8 ppb (2) | 13.7 ppb (13) | 17.0 ppb (16) | 13.0 ppb (12) | 0.0 ppb (0) | 16.0 ppb (12) | 0.19 ppb (2) | 33.0 μg/m3 (30) | 11.0 μg/m3 (46) | 46.0 | |
| May 22, 2019, 8 a.m. | 12.2 ppb (11) | 0.6 ppb (1) | 11.9 ppb (11) | 12.0 ppb (11) | 11.6 ppb (11) | 0.0 ppb (0) | 23.0 ppb (18) | 0.22 ppb (2) | 22.0 μg/m3 (20) | 10.0 μg/m3 (42) | 42.0 | |
| May 22, 2019, 7 a.m. | 10.9 ppb (10) | 0.4 ppb (0) | 11.0 ppb (10) | 10.0 ppb (9) | 10.5 ppb (10) | 0.0 ppb (0) | 24.0 ppb (18) | 0.15 ppb (2) | 26.0 μg/m3 (24) | 6.0 μg/m3 (25) | 25.0 | |
| May 22, 2019, 6 a.m. | 9.6 ppb (9) | 0.3 ppb (0) | 9.7 ppb (9) | 9.0 ppb (8) | 9.4 ppb (9) | 0.0 ppb (0) | 26.0 ppb (20) | 0.17 ppb (2) | 27.0 μg/m3 (25) | 7.0 μg/m3 (29) | 29.0 | |
| May 22, 2019, 5 a.m. | 19.0 ppb (18) | 6.3 ppb (6) | 17.5 ppb (16) | 13.0 ppb (12) | 14.3 ppb (13) | 0.0 ppb (0) | 24.0 ppb (18) | 0.18 ppb (2) | 28.0 μg/m3 (25) | 11.0 μg/m3 (46) | 46.0 | |
| May 22, 2019, 4 a.m. | 15.8 ppb (15) | 1.2 ppb (1) | 15.7 ppb (15) | 15.0 ppb (14) | 13.7 ppb (13) | 0.0 ppb (0) | 23.0 ppb (18) | 0.21 ppb (2) | 34.0 μg/m3 (31) | 11.0 μg/m3 (46) | 46.0 | |
| May 22, 2019, 3 a.m. | 18.4 ppb (17) | 1.1 ppb (1) | 18.3 ppb (17) | 17.0 ppb (16) | 17.2 ppb (16) | 0.0 ppb (0) | 22.0 ppb (17) | 0.21 ppb (2) | 32.0 μg/m3 (29) | 9.0 μg/m3 (38) | 38.0 | |
| May 22, 2019, 2 a.m. | 10.9 ppb (10) | 0.5 ppb (0) | 10.7 ppb (10) | 10.0 ppb (9) | 9.3 ppb (9) | 0.0 ppb (0) | 29.0 ppb (22) | 0.19 ppb (2) | 38.0 μg/m3 (35) | 9.0 μg/m3 (38) | 38.0 | |
| May 22, 2019, 1 a.m. | 7.8 ppb (7) | 0.8 ppb (1) | 7.9 ppb (7) | 7.0 ppb (6) | 6.8 ppb (6) | 0.0 ppb (0) | 35.0 ppb (27) | 0.16 ppb (2) | 29.0 μg/m3 (26) | 8.0 μg/m3 (33) | 33.0 | |
| May 22, 2019, midnight | 4.7 ppb (4) | 0.2 ppb (0) | 5.1 ppb (5) | 4.0 ppb (4) | 4.6 ppb (4) | 0.0 ppb (0) | 38.0 ppb (29) | 0.15 ppb (2) | 27.0 μg/m3 (25) | 9.0 μg/m3 (38) | 38.0 | |
| May 21, 2019, 11 p.m. | 4.9 ppb (5) | 0.6 ppb (1) | 5.0 ppb (5) | 4.0 ppb (4) | 4.1 ppb (4) | 0.0 ppb (0) | 39.0 ppb (30) | 0.15 ppb (2) | 31.0 μg/m3 (28) | 7.0 μg/m3 (29) | 30.0 | |
| May 21, 2019, 10 p.m. | 4.3 ppb (4) | 0.8 ppb (1) | 4.6 ppb (4) | 3.0 ppb (3) | 3.6 ppb (3) | 0.0 ppb (0) | 40.0 ppb (31) | 0.14 ppb (2) | 29.0 μg/m3 (26) | 8.0 μg/m3 (33) | 33.0 | |
| May 21, 2019, 9 p.m. | 4.0 ppb (4) | 0.8 ppb (1) | 4.3 ppb (4) | 3.0 ppb (3) | 3.2 ppb (3) | 0.0 ppb (0) | 41.0 ppb (32) | 0.14 ppb (2) | 29.0 μg/m3 (26) | 7.0 μg/m3 (29) | 32.0 | |
| May 21, 2019, 8 p.m. | 5.1 ppb (5) | 1.3 ppb (1) | 5.3 ppb (5) | 4.0 ppb (4) | 3.7 ppb (3) | 0.0 ppb (0) | 38.0 ppb (29) | 0.14 ppb (2) | 22.0 μg/m3 (20) | 7.0 μg/m3 (29) | 29.0 | |
| May 21, 2019, 7 p.m. | 5.7 ppb (5) | 1.2 ppb (1) | 6.2 ppb (6) | 4.0 ppb (4) | 4.5 ppb (4) | 0.0 ppb (0) | 40.0 ppb (31) | 0.14 ppb (2) | 24.0 μg/m3 (22) | 9.0 μg/m3 (38) | 38.0 | |
| May 21, 2019, 6 p.m. | 7.1 ppb (7) | 1.2 ppb (1) | 7.3 ppb (7) | 6.0 ppb (6) | 5.8 ppb (5) | 0.0 ppb (0) | 40.0 ppb (31) | 0.15 ppb (2) | 27.0 μg/m3 (25) | 14.0 μg/m3 (54) | 54.0 | |
| May 21, 2019, 5 p.m. | 14.8 ppb (14) | 4.0 ppb (4) | 14.4 ppb (13) | 11.0 ppb (10) | 9.5 ppb (9) | 0.0 ppb (0) | 33.0 ppb (25) | 0.19 ppb (2) | 27.0 μg/m3 (25) | 9.0 μg/m3 (38) | 38.0 | |
| May 21, 2019, 4 p.m. | 19.3 ppb (18) | 4.8 ppb (4) | 18.8 ppb (17) | 15.0 ppb (14) | 13.1 ppb (12) | 0.0 ppb (0) | 28.0 ppb (22) | 0.2 ppb (2) | 28.0 μg/m3 (25) | 14.0 μg/m3 (54) | 54.0 | |
| May 21, 2019, 3 p.m. | 20.6 ppb (19) | 5.5 ppb (5) | 19.4 ppb (18) | 15.0 ppb (14) | 13.4 ppb (12) | 0.0 ppb (0) | 27.0 ppb (21) | 0.2 ppb (2) | 26.0 μg/m3 (24) | 9.0 μg/m3 (38) | 38.0 | |
| May 21, 2019, 2 p.m. | 16.0 ppb (15) | 2.2 ppb (2) | 14.2 ppb (13) | 14.0 ppb (13) | 12.1 ppb (11) | 0.0 ppb (0) | 29.0 ppb (22) | 0.19 ppb (2) | 28.0 μg/m3 (25) | 7.0 μg/m3 (29) | 29.0 | |
| May 21, 2019, 1 p.m. | 15.1 ppb (14) | 1.1 ppb (1) | 13.2 ppb (12) | 14.0 ppb (13) | 12.1 ppb (11) | 0.0 ppb (0) | 28.0 ppb (22) | 0.17 ppb (2) | 28.0 μg/m3 (25) | 8.0 μg/m3 (33) | 33.0 | |
| May 21, 2019, noon | 12.6 ppb (12) | 0.8 ppb (1) | 11.2 ppb (10) | 12.0 ppb (11) | 10.5 ppb (10) | 0.0 ppb (0) | 30.0 ppb (23) | 0.16 ppb (2) | 33.0 μg/m3 (30) | 8.0 μg/m3 (33) | 33.0 | |
| May 21, 2019, 11 a.m. | 11.9 ppb (11) | 0.3 ppb (0) | 10.4 ppb (10) | 12.0 ppb (11) | 10.3 ppb (10) | 0.0 ppb (0) | 28.0 ppb (22) | 0.16 ppb (2) | 26.0 μg/m3 (24) | 7.0 μg/m3 (29) | 29.0 | |
| May 21, 2019, 10 a.m. | 10.4 ppb (10) | 0.2 ppb (0) | 9.3 ppb (9) | 10.0 ppb (9) | 9.3 ppb (9) | 0.0 ppb (0) | 28.0 ppb (22) | 0.15 ppb (2) | 29.0 μg/m3 (26) | 10.0 μg/m3 (42) | 42.0 | |
| May 21, 2019, 9 a.m. | 4.4 ppb (4) | -0.1 ppb (0) | 5.7 ppb (5) | 4.0 ppb (4) | 5.7 ppb (5) | 0.0 ppb (0) | 35.0 ppb (27) | 0.11 ppb (1) | 21.0 μg/m3 (19) | 6.0 μg/m3 (25) | 27.0 | |
| May 21, 2019, 8 a.m. | 2.2 ppb (2) | -0.2 ppb (0) | 3.5 ppb (3) | 2.0 ppb (2) | 3.5 ppb (3) | 0.0 ppb (0) | 37.0 ppb (28) | 0.11 ppb (1) | 19.0 μg/m3 (17) | 9.0 μg/m3 (38) | 38.0 | |
| May 21, 2019, 7 a.m. | 8.8 ppb (8) | 0.0 ppb (0) | 8.8 ppb (8) | 9.0 ppb (8) | 8.8 ppb (8) | 0.0 ppb (0) | 31.0 ppb (24) | 0.13 ppb (1) | 29.0 μg/m3 (26) | 7.0 μg/m3 (29) | 29.0 | |
| May 21, 2019, 6 a.m. | 10.4 ppb (10) | 0.0 ppb (0) | 10.6 ppb (10) | 10.0 ppb (9) | 10.3 ppb (10) | 0.0 ppb (0) | 30.0 ppb (23) | 0.15 ppb (2) | 23.0 μg/m3 (21) | 7.0 μg/m3 (29) | 29.0 | |
| May 21, 2019, 5 a.m. | 6.6 ppb (6) | 0.0 ppb (0) | 7.0 ppb (6) | 7.0 ppb (6) | 6.9 ppb (6) | 0.0 ppb (0) | 34.0 ppb (26) | 0.14 ppb (2) | 33.0 μg/m3 (30) | 4.0 μg/m3 (17) | 30.0 | |
| May 21, 2019, 4 a.m. | 5.5 ppb (5) | -0.1 ppb (0) | 5.8 ppb (5) | 6.0 ppb (6) | 5.8 ppb (5) | 0.0 ppb (0) | 36.0 ppb (28) | 0.16 ppb (2) | 24.0 μg/m3 (22) | 6.0 μg/m3 (25) | 28.0 | |
| May 21, 2019, 3 a.m. | 6.5 ppb (6) | -0.1 ppb (0) | 6.7 ppb (6) | 7.0 ppb (6) | 6.6 ppb (6) | 0.0 ppb (0) | 37.0 ppb (28) | 0.14 ppb (2) | 17.0 μg/m3 (15) | 4.0 μg/m3 (17) | 28.0 | |
| May 21, 2019, 2 a.m. | 5.5 ppb (5) | -0.1 ppb (0) | 5.7 ppb (5) | 6.0 ppb (6) | 5.6 ppb (5) | 0.0 ppb (0) | 39.0 ppb (30) | 0.14 ppb (2) | 19.0 μg/m3 (17) | 5.0 μg/m3 (21) | 30.0 | |
| May 21, 2019, 1 a.m. | 6.1 ppb (6) | 0.2 ppb (0) | 6.3 ppb (6) | 6.0 ppb (6) | 5.8 ppb (5) | 0.0 ppb (0) | 40.0 ppb (31) | 0.15 ppb (2) | 15.0 μg/m3 (14) | 7.0 μg/m3 (29) | 31.0 | |
| May 21, 2019, midnight | 5.9 ppb (5) | 0.7 ppb (1) | 6.2 ppb (6) | 5.0 ppb (5) | 5.0 ppb (5) | 0.0 ppb (0) | 43.0 ppb (33) | 0.15 ppb (2) | 13.0 μg/m3 (12) | 4.0 μg/m3 (17) | 33.0 | |
| May 20, 2019, 11 p.m. | 6.7 ppb (6) | 1.0 ppb (1) | 6.8 ppb (6) | 6.0 ppb (6) | 5.4 ppb (5) | 0.0 ppb (0) | 43.0 ppb (33) | 0.16 ppb (2) | 12.0 μg/m3 (11) | 6.0 μg/m3 (25) | 33.0 | |
| May 20, 2019, 10 p.m. | 6.4 ppb (6) | 1.2 ppb (1) | 6.7 ppb (6) | 5.0 ppb (5) | 5.0 ppb (5) | 0.0 ppb (0) | 44.0 ppb (34) | 0.16 ppb (2) | 15.0 μg/m3 (14) | 6.0 μg/m3 (25) | 34.0 | |
| May 20, 2019, 9 p.m. | 6.5 ppb (6) | 1.3 ppb (1) | 6.8 ppb (6) | 5.0 ppb (5) | 5.3 ppb (5) | 0.0 ppb (0) | 45.0 ppb (35) | 0.16 ppb (2) | 14.0 μg/m3 (13) | 8.0 μg/m3 (33) | 35.0 | |
| May 20, 2019, 8 p.m. | 7.4 ppb (7) | 1.4 ppb (1) | 7.7 ppb (7) | 6.0 ppb (6) | 6.0 ppb (6) | 0.0 ppb (0) | 45.0 ppb (35) | 0.18 ppb (2) | 15.0 μg/m3 (14) | 10.0 μg/m3 (42) | 42.0 | |
| May 20, 2019, 7 p.m. | 9.2 ppb (9) | 1.9 ppb (2) | 9.4 ppb (9) | 7.0 ppb (6) | 6.8 ppb (6) | 0.0 ppb (0) | 43.0 ppb (33) | 0.18 ppb (2) | 19.0 μg/m3 (17) | 7.0 μg/m3 (29) | 33.0 | |
| May 20, 2019, 6 p.m. | 7.1 ppb (7) | 1.4 ppb (1) | 7.4 ppb (7) | 6.0 ppb (6) | 5.6 ppb (5) | 0.0 ppb (0) | 42.0 ppb (32) | 0.18 ppb (2) | 19.0 μg/m3 (17) | 5.0 μg/m3 (21) | 32.0 | |
| May 20, 2019, 5 p.m. | 7.3 ppb (7) | 1.6 ppb (1) | 7.4 ppb (7) | 6.0 ppb (6) | 5.4 ppb (5) | 0.0 ppb (0) | 41.0 ppb (32) | 0.18 ppb (2) | 11.0 μg/m3 (10) | 5.0 μg/m3 (21) | 32.0 | |
| May 20, 2019, 4 p.m. | 9.8 ppb (9) | 2.6 ppb (2) | 9.1 ppb (8) | 7.0 ppb (6) | 6.4 ppb (6) | 0.0 ppb (0) | 36.0 ppb (28) | 0.2 ppb (2) | 11.0 μg/m3 (10) | 7.0 μg/m3 (29) | 29.0 | |
| May 20, 2019, 3 p.m. | 12.8 ppb (12) | 3.3 ppb (3) | 12.2 ppb (11) | 10.0 ppb (9) | 8.2 ppb (8) | 0.0 ppb (0) | 31.0 ppb (24) | 0.22 ppb (2) | 16.0 μg/m3 (15) | 7.0 μg/m3 (29) | 29.0 | |
| May 20, 2019, 2 p.m. | 7.0 ppb (6) | 1.2 ppb (1) | 6.4 ppb (6) | 6.0 ppb (6) | 5.0 ppb (5) | 0.0 ppb (0) | 34.0 ppb (26) | 0.17 ppb (2) | 16.0 μg/m3 (15) | 6.0 μg/m3 (25) | 26.0 | |
| May 20, 2019, 1 p.m. | 18.9 ppb (18) | 3.1 ppb (3) | 11.1 ppb (10) | 16.0 ppb (15) | 9.5 ppb (9) | 0.0 ppb (0) | 22.0 ppb (17) | 0.36 ppb (4) | 17.0 μg/m3 (15) | 7.0 μg/m3 (29) | 29.0 | |
| May 20, 2019, noon | 17.9 ppb (17) | 2.7 ppb (3) | 11.0 ppb (10) | 15.0 ppb (14) | 9.3 ppb (9) | 0.0 ppb (0) | 26.0 ppb (20) | 0.31 ppb (3) | 12.0 μg/m3 (11) | 7.0 μg/m3 (29) | 29.0 | |
| May 20, 2019, 11 a.m. | 3.2 ppb (3) | -0.1 ppb (0) | 3.6 ppb (3) | 3.0 ppb (3) | 3.5 ppb (3) | 0.0 ppb (0) | 37.0 ppb (28) | 0.14 ppb (2) | 12.0 μg/m3 (11) | 4.0 μg/m3 (17) | 28.0 | |
| May 20, 2019, 10 a.m. | 1.8 ppb (2) | -0.2 ppb (0) | 1.7 ppb (2) | 2.0 ppb (2) | 1.7 ppb (2) | 0.0 ppb (0) | 38.0 ppb (29) | 0.13 ppb (1) | 12.0 μg/m3 (11) | 3.0 μg/m3 (12) | 29.0 | |
| May 20, 2019, 9 a.m. | 2.6 ppb (2) | -0.2 ppb (0) | 2.6 ppb (2) | 3.0 ppb (3) | 2.6 ppb (2) | 0.0 ppb (0) | 37.0 ppb (28) | 0.12 ppb (1) | 10.0 μg/m3 (9) | 4.0 μg/m3 (17) | 28.0 | |
| May 20, 2019, 8 a.m. | 3.5 ppb (3) | -0.1 ppb (0) | 3.7 ppb (3) | 4.0 ppb (4) | 3.6 ppb (3) | 0.0 ppb (0) | 36.0 ppb (28) | 0.14 ppb (2) | 11.0 μg/m3 (10) | 7.0 μg/m3 (29) | 29.0 | |
| May 20, 2019, 7 a.m. | 3.3 ppb (3) | -0.2 ppb (0) | 3.5 ppb (3) | 3.0 ppb (3) | 3.5 ppb (3) | 0.0 ppb (0) | 36.0 ppb (28) | 0.14 ppb (2) | 16.0 μg/m3 (15) | 9.0 μg/m3 (38) | 38.0 | |
| May 20, 2019, 6 a.m. | 3.0 ppb (3) | -0.2 ppb (0) | 3.6 ppb (3) | 3.0 ppb (3) | 3.6 ppb (3) | 0.0 ppb (0) | 37.0 ppb (28) | 0.15 ppb (2) | 11.0 μg/m3 (10) | 6.0 μg/m3 (25) | 28.0 | |
| May 20, 2019, 5 a.m. | 1.9 ppb (2) | -0.3 ppb (0) | 2.5 ppb (2) | 2.0 ppb (2) | 2.5 ppb (2) | 0.0 ppb (0) | 41.0 ppb (32) | 0.12 ppb (1) | 8.0 μg/m3 (7) | 9.0 μg/m3 (38) | 38.0 | |
| May 20, 2019, 4 a.m. | 2.3 ppb (2) | -0.2 ppb (0) | 2.6 ppb (2) | 3.0 ppb (3) | 2.2 ppb (2) | 0.0 ppb (0) | 39.0 ppb (30) | 0.13 ppb (1) | 21.0 μg/m3 (19) | 6.0 μg/m3 (25) | 30.0 | |
| May 20, 2019, 3 a.m. | 2.5 ppb (2) | -0.2 ppb (0) | 2.7 ppb (3) | 3.0 ppb (3) | 2.7 ppb (3) | 0.0 ppb (0) | 37.0 ppb (28) | 0.12 ppb (1) | 19.0 μg/m3 (17) | 7.0 μg/m3 (29) | 29.0 | |
| May 20, 2019, 2 a.m. | 2.5 ppb (2) | -0.2 ppb (0) | 2.5 ppb (2) | 3.0 ppb (3) | 2.5 ppb (2) | 0.0 ppb (0) | 39.0 ppb (30) | 0.12 ppb (1) | 25.0 μg/m3 (23) | 8.0 μg/m3 (33) | 33.0 | |
| May 20, 2019, 1 a.m. | 1.9 ppb (2) | -0.1 ppb (0) | 2.2 ppb (2) | 2.0 ppb (2) | 2.1 ppb (2) | 0.0 ppb (0) | 42.0 ppb (32) | 0.13 ppb (1) | 19.0 μg/m3 (17) | 10.0 μg/m3 (42) | 42.0 | |
| May 20, 2019, midnight | 1.8 ppb (2) | 0.0 ppb (0) | 2.2 ppb (2) | 2.0 ppb (2) | 1.8 ppb (2) | 0.0 ppb (0) | 45.0 ppb (35) | 0.13 ppb (1) | 17.0 μg/m3 (15) | 9.0 μg/m3 (38) | 38.0 | |
| May 19, 2019, 11 p.m. | 1.6 ppb (1) | 0.0 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 45.0 ppb (35) | 0.12 ppb (1) | 9.0 μg/m3 (8) | 2.0 μg/m3 (8) | 35.0 | |
| May 19, 2019, 10 p.m. | 1.9 ppb (2) | 0.1 ppb (0) | 2.7 ppb (3) | 2.0 ppb (2) | 2.3 ppb (2) | 0.0 ppb (0) | 46.0 ppb (35) | 0.12 ppb (1) | 11.0 μg/m3 (10) | 3.0 μg/m3 (12) | 35.0 | |
| May 19, 2019, 9 p.m. | 4.8 ppb (4) | 0.5 ppb (0) | 5.7 ppb (5) | 4.0 ppb (4) | 4.8 ppb (4) | 0.0 ppb (0) | 45.0 ppb (35) | 0.16 ppb (2) | 10.0 μg/m3 (9) | 7.0 μg/m3 (29) | 35.0 | |
| May 19, 2019, 8 p.m. | 5.8 ppb (5) | 0.8 ppb (1) | 6.5 ppb (6) | 5.0 ppb (5) | 5.4 ppb (5) | 0.0 ppb (0) | 41.0 ppb (32) | 0.15 ppb (2) | 7.0 μg/m3 (6) | 7.0 μg/m3 (29) | 32.0 | |
| May 19, 2019, 7 p.m. | 5.5 ppb (5) | 1.2 ppb (1) | 6.2 ppb (6) | 4.0 ppb (4) | 4.8 ppb (4) | 0.0 ppb (0) | 38.0 ppb (29) | 0.13 ppb (1) | 7.0 μg/m3 (6) | 6.0 μg/m3 (25) | 29.0 | |
| May 19, 2019, 6 p.m. | 4.0 ppb (4) | 0.5 ppb (0) | 4.8 ppb (4) | 3.0 ppb (3) | 3.9 ppb (4) | 0.0 ppb (0) | 39.0 ppb (30) | 0.12 ppb (1) | 6.0 μg/m3 (5) | 4.0 μg/m3 (17) | 30.0 | |
| May 19, 2019, 5 p.m. | 7.5 ppb (7) | 1.8 ppb (2) | 7.1 ppb (7) | 6.0 ppb (6) | 4.9 ppb (5) | 0.0 ppb (0) | 38.0 ppb (29) | 0.12 ppb (1) | 7.0 μg/m3 (6) | 5.0 μg/m3 (21) | 29.0 | |
| May 19, 2019, 4 p.m. | 5.8 ppb (5) | 0.8 ppb (1) | 6.4 ppb (6) | 5.0 ppb (5) | 5.0 ppb (5) | 0.0 ppb (0) | 39.0 ppb (30) | 0.11 ppb (1) | 8.0 μg/m3 (7) | 6.0 μg/m3 (25) | 30.0 | |
| May 19, 2019, 3 p.m. | 6.9 ppb (6) | 1.0 ppb (1) | 6.9 ppb (6) | 6.0 ppb (6) | 5.8 ppb (5) | 0.0 ppb (0) | 37.0 ppb (28) | 0.12 ppb (1) | 10.0 μg/m3 (9) | 4.0 μg/m3 (17) | 28.0 | |
| May 19, 2019, 2 p.m. | 9.8 ppb (9) | 0.7 ppb (1) | 10.3 ppb (10) | 9.0 ppb (8) | 9.5 ppb (9) | 0.0 ppb (0) | 34.0 ppb (26) | 0.18 ppb (2) | 11.0 μg/m3 (10) | 7.0 μg/m3 (29) | 29.0 | |
| May 19, 2019, 1 p.m. | 12.1 ppb (11) | 0.3 ppb (0) | 11.7 ppb (11) | 12.0 ppb (11) | 11.5 ppb (11) | 0.0 ppb (0) | 31.0 ppb (24) | 0.18 ppb (2) | 12.0 μg/m3 (11) | 9.0 μg/m3 (38) | 38.0 | |
| May 19, 2019, noon | 9.1 ppb (8) | 0.1 ppb (0) | 8.7 ppb (8) | 9.0 ppb (8) | 8.7 ppb (8) | 0.0 ppb (0) | 31.0 ppb (24) | 0.17 ppb (2) | 12.0 μg/m3 (11) | 4.0 μg/m3 (17) | 24.0 | |
| May 19, 2019, 11 a.m. | 5.0 ppb (5) | 0.1 ppb (0) | 4.9 ppb (5) | 5.0 ppb (5) | 4.9 ppb (5) | 0.0 ppb (0) | 33.0 ppb (25) | 0.16 ppb (2) | 9.0 μg/m3 (8) | 4.0 μg/m3 (17) | 25.0 | |
| May 19, 2019, 10 a.m. | 3.9 ppb (4) | 0.0 ppb (0) | 4.4 ppb (4) | 4.0 ppb (4) | 4.4 ppb (4) | 0.0 ppb (0) | 36.0 ppb (28) | 0.15 ppb (2) | 10.0 μg/m3 (9) | 4.0 μg/m3 (17) | 28.0 | |
| May 19, 2019, 9 a.m. | 2.5 ppb (2) | -0.1 ppb (0) | 3.5 ppb (3) | 3.0 ppb (3) | 3.6 ppb (3) | 0.0 ppb (0) | 38.0 ppb (29) | 0.12 ppb (1) | 11.0 μg/m3 (10) | 5.0 μg/m3 (21) | 29.0 | |
| May 19, 2019, 8 a.m. | 3.0 ppb (3) | -0.1 ppb (0) | 4.3 ppb (4) | 3.0 ppb (3) | 4.3 ppb (4) | 0.0 ppb (0) | 37.0 ppb (28) | 0.14 ppb (2) | 20.0 μg/m3 (18) | 6.0 μg/m3 (25) | 28.0 | |
| May 19, 2019, 7 a.m. | 2.7 ppb (3) | -0.2 ppb (0) | 3.6 ppb (3) | 3.0 ppb (3) | 3.6 ppb (3) | 0.0 ppb (0) | 37.0 ppb (28) | 0.11 ppb (1) | 10.0 μg/m3 (9) | 7.0 μg/m3 (29) | 29.0 | |
| May 19, 2019, 6 a.m. | 4.1 ppb (4) | -0.1 ppb (0) | 5.5 ppb (5) | 4.0 ppb (4) | 5.5 ppb (5) | 0.0 ppb (0) | 36.0 ppb (28) | 0.13 ppb (1) | 18.0 μg/m3 (16) | 8.0 μg/m3 (33) | 33.0 | |
| May 19, 2019, 5 a.m. | 7.0 ppb (6) | 0.1 ppb (0) | 7.7 ppb (7) | 7.0 ppb (6) | 7.5 ppb (7) | 0.0 ppb (0) | 35.0 ppb (27) | 0.15 ppb (2) | 21.0 μg/m3 (19) | 8.0 μg/m3 (33) | 33.0 | |
| May 19, 2019, 4 a.m. | 9.9 ppb (9) | 0.2 ppb (0) | 10.7 ppb (10) | 10.0 ppb (9) | 10.4 ppb (10) | 0.0 ppb (0) | 35.0 ppb (27) | 0.2 ppb (2) | 31.0 μg/m3 (28) | 12.0 μg/m3 (50) | 50.0 | |
| May 19, 2019, 3 a.m. | 7.4 ppb (7) | 0.0 ppb (0) | 8.5 ppb (8) | 7.0 ppb (6) | 8.5 ppb (8) | 0.0 ppb (0) | 36.0 ppb (28) | 0.19 ppb (2) | 27.0 μg/m3 (25) | 8.0 μg/m3 (33) | 33.0 | |
| May 19, 2019, 2 a.m. | 6.0 ppb (6) | -0.1 ppb (0) | 6.8 ppb (6) | 6.0 ppb (6) | 6.8 ppb (6) | 0.0 ppb (0) | 41.0 ppb (32) | 0.18 ppb (2) | 29.0 μg/m3 (26) | 8.0 μg/m3 (33) | 33.0 | |
| May 19, 2019, 1 a.m. | 5.1 ppb (5) | 0.0 ppb (0) | 6.1 ppb (6) | 5.0 ppb (5) | 6.0 ppb (6) | 0.0 ppb (0) | 42.0 ppb (32) | 0.16 ppb (2) | 28.0 μg/m3 (25) | 8.0 μg/m3 (33) | 33.0 | |
| May 19, 2019, midnight | 5.8 ppb (5) | 0.3 ppb (0) | 6.6 ppb (6) | 5.0 ppb (5) | 6.1 ppb (6) | 0.0 ppb (0) | 41.0 ppb (32) | 0.16 ppb (2) | 29.0 μg/m3 (26) | 6.0 μg/m3 (25) | 32.0 | |
| May 18, 2019, 11 p.m. | 5.5 ppb (5) | 0.4 ppb (0) | 6.4 ppb (6) | 5.0 ppb (5) | 5.7 ppb (5) | 0.0 ppb (0) | 42.0 ppb (32) | 0.15 ppb (2) | 29.0 μg/m3 (26) | 8.0 μg/m3 (33) | 33.0 | |
| May 18, 2019, 10 p.m. | 6.7 ppb (6) | 0.8 ppb (1) | 7.4 ppb (7) | 6.0 ppb (6) | 6.3 ppb (6) | 0.0 ppb (0) | 44.0 ppb (34) | 0.16 ppb (2) | 28.0 μg/m3 (25) | 11.0 μg/m3 (46) | 46.0 |