DeKalb Co GA, US: 33.6906, -84.2731
| Date Observed (UTC) | NOX | NO | NOY | NO2 | NO2Y | SO2 | OZONE | CO | PM10 | PM2.5 | AQI | AQI/500 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| May 22, 2019, midnight | 3.1 ppb (3) | -0.1 ppb (0) | 2.0 ppb (2) | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 34.0 ppb (26) | 0.19 ppb (2) | N/A | N/A | 26.0 | |
| May 21, 2019, 11 p.m. | 2.7 ppb (3) | -0.1 ppb (0) | 2.0 ppb (2) | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 43.0 ppb (33) | 0.18 ppb (2) | 22.0 μg/m3 (20) | 10.7 μg/m3 (45) | 45.0 | |
| May 21, 2019, 10 p.m. | 1.9 ppb (2) | -0.1 ppb (0) | 1.0 ppb (1) | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 47.0 ppb (36) | 0.17 ppb (2) | 20.0 μg/m3 (18) | 9.9 μg/m3 (41) | 41.0 | |
| May 21, 2019, 9 p.m. | 2.1 ppb (2) | 0.0 ppb (0) | 1.0 ppb (1) | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 47.0 ppb (36) | 0.16 ppb (2) | 23.0 μg/m3 (21) | 10.2 μg/m3 (42) | 42.0 | |
| May 21, 2019, 8 p.m. | 2.4 ppb (2) | 0.0 ppb (0) | 2.0 ppb (2) | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 51.0 ppb (39) | 0.17 ppb (2) | 25.0 μg/m3 (23) | 10.6 μg/m3 (44) | 44.0 | |
| May 21, 2019, 7 p.m. | 2.6 ppb (2) | 0.0 ppb (0) | 2.0 ppb (2) | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 53.0 ppb (41) | 0.17 ppb (2) | 26.0 μg/m3 (24) | 10.9 μg/m3 (45) | 45.0 | |
| May 21, 2019, 6 p.m. | 2.7 ppb (3) | 0.0 ppb (0) | 2.0 ppb (2) | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 55.0 ppb (42) | 0.17 ppb (2) | 24.0 μg/m3 (22) | 11.1 μg/m3 (46) | 46.0 | |
| May 21, 2019, 5 p.m. | 3.6 ppb (3) | 0.0 ppb (0) | 3.0 ppb (3) | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 65.0 ppb (50) | 0.19 ppb (2) | 23.0 μg/m3 (21) | 11.4 μg/m3 (48) | 50.0 | |
| May 21, 2019, 4 p.m. | 3.4 ppb (3) | 0.0 ppb (0) | 3.0 ppb (3) | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 62.0 ppb (48) | 0.19 ppb (2) | 22.0 μg/m3 (20) | 9.9 μg/m3 (41) | 48.0 | |
| May 21, 2019, 3 p.m. | 2.7 ppb (3) | 0.1 ppb (0) | 2.0 ppb (2) | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 53.0 ppb (41) | 0.18 ppb (2) | 20.0 μg/m3 (18) | 8.8 μg/m3 (37) | 41.0 | |
| May 21, 2019, 2 p.m. | 9.6 ppb (9) | 1.6 ppb (1) | 9.0 ppb (8) | 8.0 ppb (7) | N/A | 0.0 ppb (0) | 42.0 ppb (32) | 0.29 ppb (3) | 17.0 μg/m3 (15) | 9.0 μg/m3 (38) | 38.0 | |
| May 21, 2019, 1 p.m. | 57.7 ppb (54) | 35.8 ppb (33) | 58.0 ppb (54) | 22.0 ppb (20) | N/A | 0.0 ppb (0) | 10.0 ppb (8) | 0.71 ppb (8) | 23.0 μg/m3 (21) | 10.7 μg/m3 (45) | 54.0 | |
| May 21, 2019, noon | 87.0 ppb (85) | 75.2 ppb (73) | 90.0 ppb (88) | 12.0 ppb (11) | N/A | 0.0 ppb (0) | 0.0 ppb (0) | 0.77 ppb (9) | 27.0 μg/m3 (25) | 10.7 μg/m3 (45) | 88.0 | |
| May 21, 2019, 11 a.m. | 81.2 ppb (79) | 73.7 ppb (71) | 81.0 ppb (79) | 7.0 ppb (6) | N/A | 0.0 ppb (0) | 0.0 ppb (0) | 0.65 ppb (7) | 27.0 μg/m3 (25) | 11.1 μg/m3 (46) | 79.0 | |
| May 21, 2019, 10 a.m. | 72.4 ppb (70) | 63.6 ppb (60) | 75.0 ppb (72) | 9.0 ppb (8) | N/A | 0.0 ppb (0) | 0.0 ppb (0) | 0.58 ppb (6) | 25.0 μg/m3 (23) | 11.6 μg/m3 (48) | 72.0 | |
| May 21, 2019, 9 a.m. | 55.5 ppb (52) | 46.2 ppb (43) | 60.0 ppb (56) | 9.0 ppb (8) | N/A | 0.0 ppb (0) | 0.0 ppb (0) | 0.5 ppb (6) | 26.0 μg/m3 (24) | 11.7 μg/m3 (49) | 56.0 | |
| May 21, 2019, 8 a.m. | 47.6 ppb (44) | 36.0 ppb (33) | 50.0 ppb (46) | 12.0 ppb (11) | N/A | 0.0 ppb (0) | 0.0 ppb (0) | 0.46 ppb (5) | 29.0 μg/m3 (26) | 11.8 μg/m3 (49) | 49.0 | |
| May 21, 2019, 7 a.m. | 36.7 ppb (34) | 24.2 ppb (22) | 38.0 ppb (35) | 13.0 ppb (12) | N/A | 0.0 ppb (0) | 0.0 ppb (0) | N/A | 28.0 μg/m3 (25) | 11.6 μg/m3 (48) | 48.0 | |
| May 21, 2019, 6 a.m. | 31.6 ppb (29) | 16.4 ppb (15) | 32.0 ppb (30) | 15.0 ppb (14) | N/A | 0.0 ppb (0) | 0.0 ppb (0) | N/A | 29.0 μg/m3 (26) | 11.6 μg/m3 (48) | 48.0 | |
| May 21, 2019, 5 a.m. | 38.4 ppb (36) | 19.8 ppb (18) | 40.0 ppb (37) | 19.0 ppb (18) | N/A | 0.0 ppb (0) | 0.0 ppb (0) | 0.46 ppb (5) | 32.0 μg/m3 (29) | 11.2 μg/m3 (47) | 47.0 | |
| May 21, 2019, 4 a.m. | 36.5 ppb (34) | 13.0 ppb (12) | 38.0 ppb (35) | 24.0 ppb (22) | N/A | 0.0 ppb (0) | 0.0 ppb (0) | 0.46 ppb (5) | N/A | N/A | 35.0 | |
| May 21, 2019, 3 a.m. | 39.5 ppb (37) | 11.5 ppb (11) | 42.0 ppb (39) | 28.0 ppb (26) | N/A | 0.0 ppb (0) | 0.0 ppb (0) | 0.44 ppb (5) | 27.0 μg/m3 (25) | 10.3 μg/m3 (43) | 43.0 | |
| May 21, 2019, 2 a.m. | 47.8 ppb (44) | 13.6 ppb (13) | 50.0 ppb (46) | 34.0 ppb (31) | N/A | N/A | 0.0 ppb (0) | 0.43 ppb (5) | 22.0 μg/m3 (20) | 9.6 μg/m3 (40) | 46.0 | |
| May 21, 2019, 1 a.m. | 20.7 ppb (19) | 1.1 ppb (1) | 28.0 ppb (26) | 20.0 ppb (19) | N/A | N/A | 19.0 ppb (15) | 0.28 ppb (3) | 21.0 μg/m3 (19) | 8.8 μg/m3 (37) | 37.0 | |
| May 21, 2019, midnight | 6.0 ppb (6) | -0.1 ppb (0) | 6.0 ppb (6) | 6.0 ppb (6) | N/A | N/A | 40.0 ppb (31) | 0.2 ppb (2) | 17.0 μg/m3 (15) | 8.2 μg/m3 (34) | 34.0 | |
| May 20, 2019, 11 p.m. | 4.2 ppb (4) | 0.0 ppb (0) | 4.0 ppb (4) | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 45.0 ppb (35) | 0.17 ppb (2) | 18.0 μg/m3 (16) | 7.9 μg/m3 (33) | 35.0 | |
| May 20, 2019, 10 p.m. | 3.5 ppb (3) | 0.1 ppb (0) | 3.0 ppb (3) | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 48.0 ppb (37) | 0.17 ppb (2) | 20.0 μg/m3 (18) | 8.0 μg/m3 (33) | 37.0 | |
| May 20, 2019, 9 p.m. | 3.0 ppb (3) | 0.1 ppb (0) | 2.0 ppb (2) | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 49.0 ppb (38) | 0.16 ppb (2) | 19.0 μg/m3 (17) | 8.2 μg/m3 (34) | 38.0 | |
| May 20, 2019, 8 p.m. | 3.4 ppb (3) | 0.2 ppb (0) | 3.0 ppb (3) | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 48.0 ppb (37) | 0.17 ppb (2) | 27.0 μg/m3 (25) | 11.0 μg/m3 (46) | 46.0 | |
| May 20, 2019, 7 p.m. | 3.6 ppb (3) | 0.2 ppb (0) | 3.0 ppb (3) | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 50.0 ppb (38) | 0.18 ppb (2) | 28.0 μg/m3 (25) | 11.4 μg/m3 (48) | 48.0 | |
| May 20, 2019, 6 p.m. | 3.3 ppb (3) | 0.1 ppb (0) | 3.0 ppb (3) | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 51.0 ppb (39) | 0.18 ppb (2) | 29.0 μg/m3 (26) | 11.7 μg/m3 (49) | 49.0 | |
| May 20, 2019, 5 p.m. | 2.9 ppb (3) | 0.1 ppb (0) | 2.0 ppb (2) | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 50.0 ppb (38) | 0.18 ppb (2) | 29.0 μg/m3 (26) | 11.4 μg/m3 (48) | 48.0 | |
| May 20, 2019, 4 p.m. | 3.3 ppb (3) | 0.2 ppb (0) | 3.0 ppb (3) | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 47.0 ppb (36) | 0.18 ppb (2) | 28.0 μg/m3 (25) | 11.3 μg/m3 (47) | 47.0 | |
| May 20, 2019, 3 p.m. | 4.3 ppb (4) | 0.4 ppb (0) | 4.0 ppb (4) | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 45.0 ppb (35) | 0.19 ppb (2) | 24.0 μg/m3 (22) | 11.4 μg/m3 (48) | 48.0 | |
| May 20, 2019, 2 p.m. | 6.5 ppb (6) | 0.8 ppb (1) | 6.0 ppb (6) | 6.0 ppb (6) | N/A | 0.0 ppb (0) | 41.0 ppb (32) | 0.21 ppb (2) | 21.0 μg/m3 (19) | 10.0 μg/m3 (42) | 42.0 | |
| May 20, 2019, 1 p.m. | 11.9 ppb (11) | 3.3 ppb (3) | 12.0 ppb (11) | 9.0 ppb (8) | N/A | 0.0 ppb (0) | 30.0 ppb (23) | 0.27 ppb (3) | 26.0 μg/m3 (24) | 12.7 μg/m3 (51) | 51.0 | |
| May 20, 2019, noon | 46.6 ppb (43) | 34.8 ppb (32) | 50.0 ppb (46) | 12.0 ppb (11) | N/A | 0.0 ppb (0) | 1.0 ppb (1) | 0.57 ppb (6) | 30.0 μg/m3 (27) | 17.6 μg/m3 (62) | 62.0 | |
| May 20, 2019, 11 a.m. | 49.3 ppb (46) | 39.2 ppb (36) | 51.0 ppb (47) | 10.0 ppb (9) | N/A | 0.0 ppb (0) | 0.0 ppb (0) | 0.62 ppb (7) | 36.0 μg/m3 (33) | 18.0 μg/m3 (63) | 63.0 | |
| May 20, 2019, 10 a.m. | 70.4 ppb (67) | 59.7 ppb (56) | 75.0 ppb (72) | 11.0 ppb (10) | N/A | 0.0 ppb (0) | 0.0 ppb (0) | 0.72 ppb (8) | 37.0 μg/m3 (34) | 18.1 μg/m3 (63) | 72.0 | |
| May 20, 2019, 9 a.m. | 72.9 ppb (70) | 61.3 ppb (58) | 80.0 ppb (78) | 12.0 ppb (11) | N/A | 0.0 ppb (0) | 0.0 ppb (0) | 0.76 ppb (8) | 35.0 μg/m3 (32) | 18.3 μg/m3 (63) | 78.0 | |
| May 20, 2019, 8 a.m. | 45.3 ppb (42) | 34.7 ppb (32) | 50.0 ppb (46) | 11.0 ppb (10) | N/A | 0.0 ppb (0) | N/A | 0.67 ppb (7) | 35.0 μg/m3 (32) | 17.7 μg/m3 (62) | 62.0 | |
| May 20, 2019, 7 a.m. | 30.4 ppb (28) | 16.6 ppb (15) | 32.0 ppb (30) | 14.0 ppb (13) | N/A | 0.0 ppb (0) | N/A | N/A | 34.0 μg/m3 (31) | 17.9 μg/m3 (63) | 63.0 | |
| May 20, 2019, 6 a.m. | 30.6 ppb (28) | 16.5 ppb (15) | 33.0 ppb (31) | 14.0 ppb (13) | N/A | 0.0 ppb (0) | 0.0 ppb (0) | N/A | 33.0 μg/m3 (30) | 18.1 μg/m3 (63) | 63.0 | |
| May 20, 2019, 5 a.m. | 31.9 ppb (30) | 15.1 ppb (14) | 39.0 ppb (36) | 17.0 ppb (16) | N/A | 0.0 ppb (0) | 0.0 ppb (0) | 0.55 ppb (6) | 35.0 μg/m3 (32) | 17.8 μg/m3 (62) | 62.0 | |
| May 20, 2019, 4 a.m. | 27.1 ppb (25) | 7.5 ppb (7) | 36.0 ppb (33) | 20.0 ppb (19) | N/A | 0.0 ppb (0) | 0.0 ppb (0) | 0.5 ppb (6) | 31.0 μg/m3 (28) | 17.5 μg/m3 (62) | 62.0 | |
| May 20, 2019, 3 a.m. | 27.0 ppb (25) | 4.9 ppb (5) | 33.0 ppb (31) | 22.0 ppb (20) | N/A | 0.0 ppb (0) | 2.0 ppb (2) | 0.47 ppb (5) | 28.0 μg/m3 (25) | 16.9 μg/m3 (60) | 60.0 | |
| May 20, 2019, 2 a.m. | 7.3 ppb (7) | 0.0 ppb (0) | 9.0 ppb (8) | 7.0 ppb (6) | N/A | 0.0 ppb (0) | 23.0 ppb (18) | 0.25 ppb (3) | 25.0 μg/m3 (23) | 16.9 μg/m3 (60) | 60.0 | |
| May 20, 2019, 1 a.m. | 3.8 ppb (4) | -0.1 ppb (0) | 4.0 ppb (4) | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 35.0 ppb (27) | 0.21 ppb (2) | 22.0 μg/m3 (20) | 15.5 μg/m3 (57) | 57.0 | |
| May 20, 2019, midnight | 3.6 ppb (3) | -0.1 ppb (0) | 3.0 ppb (3) | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 45.0 ppb (35) | 0.19 ppb (2) | 20.0 μg/m3 (18) | 14.2 μg/m3 (55) | 55.0 | |
| May 19, 2019, 11 p.m. | N/A | N/A | 2.0 ppb (2) | N/A | N/A | 0.0 ppb (0) | 48.0 ppb (37) | 0.18 ppb (2) | 21.0 μg/m3 (19) | 13.3 μg/m3 (53) | 53.0 | |
| May 19, 2019, 10 p.m. | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 0.0 ppb (0) | 49.0 ppb (38) | 0.17 ppb (2) | 21.0 μg/m3 (19) | 13.5 μg/m3 (53) | 53.0 | |
| May 19, 2019, 9 p.m. | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 0.0 ppb (0) | 50.0 ppb (38) | 0.17 ppb (2) | 19.0 μg/m3 (17) | 12.8 μg/m3 (52) | 52.0 | |
| May 19, 2019, 8 p.m. | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 0.0 ppb (0) | 48.0 ppb (37) | 0.17 ppb (2) | 20.0 μg/m3 (18) | 12.8 μg/m3 (52) | 52.0 | |
| May 19, 2019, 7 p.m. | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 0.0 ppb (0) | 48.0 ppb (37) | 0.17 ppb (2) | 20.0 μg/m3 (18) | 12.9 μg/m3 (52) | 52.0 | |
| May 19, 2019, 6 p.m. | 1.7 ppb (2) | 0.0 ppb (0) | 1.0 ppb (1) | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 49.0 ppb (38) | 0.17 ppb (2) | 22.0 μg/m3 (20) | 13.2 μg/m3 (53) | 53.0 | |
| May 19, 2019, 5 p.m. | 1.9 ppb (2) | 0.0 ppb (0) | 1.0 ppb (1) | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 50.0 ppb (38) | 0.17 ppb (2) | 21.0 μg/m3 (19) | 13.2 μg/m3 (53) | 53.0 | |
| May 19, 2019, 4 p.m. | 1.7 ppb (2) | 0.0 ppb (0) | 1.0 ppb (1) | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 50.0 ppb (38) | 0.17 ppb (2) | 21.0 μg/m3 (19) | 12.5 μg/m3 (51) | 51.0 | |
| May 19, 2019, 3 p.m. | 2.1 ppb (2) | 0.0 ppb (0) | 2.0 ppb (2) | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 49.0 ppb (38) | 0.17 ppb (2) | 20.0 μg/m3 (18) | 12.6 μg/m3 (51) | 51.0 | |
| May 19, 2019, 2 p.m. | 5.7 ppb (5) | 0.7 ppb (1) | 5.0 ppb (5) | 5.0 ppb (5) | N/A | 0.0 ppb (0) | 45.0 ppb (35) | 0.23 ppb (3) | 22.0 μg/m3 (20) | 14.7 μg/m3 (56) | 56.0 | |
| May 19, 2019, 1 p.m. | 22.0 ppb (20) | 8.6 ppb (8) | 22.0 ppb (20) | 14.0 ppb (13) | N/A | 0.0 ppb (0) | 14.0 ppb (11) | 0.5 ppb (6) | 26.0 μg/m3 (24) | 17.5 μg/m3 (62) | 62.0 | |
| May 19, 2019, noon | 22.4 ppb (21) | 17.3 ppb (16) | 24.0 ppb (22) | 5.0 ppb (5) | N/A | 0.0 ppb (0) | 1.0 ppb (1) | 0.72 ppb (8) | 30.0 μg/m3 (27) | 17.6 μg/m3 (62) | 62.0 | |
| May 19, 2019, 11 a.m. | 25.4 ppb (24) | 22.0 ppb (20) | 27.0 ppb (25) | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 0.0 ppb (0) | 0.74 ppb (8) | 32.0 μg/m3 (29) | 19.0 μg/m3 (65) | 65.0 | |
| May 19, 2019, 10 a.m. | 24.2 ppb (22) | 19.4 ppb (18) | 27.0 ppb (25) | 5.0 ppb (5) | N/A | 0.0 ppb (0) | 0.0 ppb (0) | 0.71 ppb (8) | 35.0 μg/m3 (32) | 20.0 μg/m3 (67) | 67.0 | |
| May 19, 2019, 9 a.m. | 22.2 ppb (21) | 16.6 ppb (15) | 25.0 ppb (23) | 6.0 ppb (6) | N/A | 0.0 ppb (0) | 0.0 ppb (0) | 0.7 ppb (8) | 37.0 μg/m3 (34) | 20.3 μg/m3 (68) | 68.0 | |
| May 19, 2019, 8 a.m. | 28.5 ppb (26) | 22.3 ppb (21) | 28.0 ppb (26) | 6.0 ppb (6) | N/A | 0.0 ppb (0) | 0.0 ppb (0) | 0.8 ppb (9) | 35.0 μg/m3 (32) | 19.9 μg/m3 (67) | 67.0 | |
| May 19, 2019, 7 a.m. | 42.3 ppb (39) | 34.8 ppb (32) | 45.0 ppb (42) | 8.0 ppb (7) | N/A | 0.0 ppb (0) | 0.0 ppb (0) | N/A | 35.0 μg/m3 (32) | 19.3 μg/m3 (66) | 66.0 | |
| May 19, 2019, 6 a.m. | 40.1 ppb (37) | 30.9 ppb (29) | 44.0 ppb (41) | 9.0 ppb (8) | N/A | 0.0 ppb (0) | 0.0 ppb (0) | N/A | 35.0 μg/m3 (32) | 19.0 μg/m3 (65) | 65.0 | |
| May 19, 2019, 5 a.m. | 36.0 ppb (33) | 22.3 ppb (21) | 40.0 ppb (37) | 14.0 ppb (13) | N/A | 0.0 ppb (0) | 0.0 ppb (0) | 0.81 ppb (9) | 35.0 μg/m3 (32) | 18.8 μg/m3 (64) | 64.0 | |
| May 19, 2019, 4 a.m. | 22.2 ppb (21) | 6.2 ppb (6) | 25.0 ppb (23) | 16.0 ppb (15) | N/A | 0.0 ppb (0) | 0.0 ppb (0) | 0.58 ppb (6) | N/A | N/A | 23.0 | |
| May 19, 2019, 3 a.m. | 13.0 ppb (12) | 0.2 ppb (0) | 15.0 ppb (14) | 13.0 ppb (12) | N/A | 0.0 ppb (0) | 7.0 ppb (5) | 0.4 ppb (4) | 29.0 μg/m3 (26) | 17.9 μg/m3 (63) | 63.0 | |
| May 19, 2019, 2 a.m. | 6.3 ppb (6) | 0.1 ppb (0) | 8.0 ppb (7) | 6.0 ppb (6) | N/A | 0.0 ppb (0) | 19.0 ppb (15) | 0.28 ppb (3) | 27.0 μg/m3 (25) | 17.3 μg/m3 (61) | 61.0 | |
| May 19, 2019, 1 a.m. | 4.0 ppb (4) | 0.0 ppb (0) | 4.0 ppb (4) | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 30.0 ppb (23) | 0.35 ppb (4) | 35.0 μg/m3 (32) | 17.1 μg/m3 (61) | 61.0 | |
| May 19, 2019, midnight | 7.4 ppb (7) | 0.9 ppb (1) | 5.0 ppb (5) | 7.0 ppb (6) | N/A | 0.0 ppb (0) | 37.0 ppb (28) | 2.39 ppb (27) | 92.0 μg/m3 (68) | 26.7 μg/m3 (81) | 81.0 | |
| May 18, 2019, 11 p.m. | 2.2 ppb (2) | -0.1 ppb (0) | 1.0 ppb (1) | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 45.0 ppb (35) | 0.27 ppb (3) | 22.0 μg/m3 (20) | 13.7 μg/m3 (54) | 54.0 | |
| May 18, 2019, 10 p.m. | 2.3 ppb (2) | -0.1 ppb (0) | 1.0 ppb (1) | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 47.0 ppb (36) | 0.19 ppb (2) | 19.0 μg/m3 (17) | 13.4 μg/m3 (53) | 53.0 | |
| May 18, 2019, 9 p.m. | 2.4 ppb (2) | 0.0 ppb (0) | 2.0 ppb (2) | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 48.0 ppb (37) | 0.19 ppb (2) | 20.0 μg/m3 (18) | 14.2 μg/m3 (55) | 55.0 | |
| May 18, 2019, 8 p.m. | 2.6 ppb (2) | 0.0 ppb (0) | 2.0 ppb (2) | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 51.0 ppb (39) | 0.19 ppb (2) | 22.0 μg/m3 (20) | 14.4 μg/m3 (55) | 55.0 | |
| May 18, 2019, 7 p.m. | 2.7 ppb (3) | 0.0 ppb (0) | 2.0 ppb (2) | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 55.0 ppb (42) | 0.2 ppb (2) | 22.0 μg/m3 (20) | 15.0 μg/m3 (56) | 56.0 | |
| May 18, 2019, 6 p.m. | 4.3 ppb (4) | 0.1 ppb (0) | 4.0 ppb (4) | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 64.0 ppb (49) | 0.21 ppb (2) | 25.0 μg/m3 (23) | 16.3 μg/m3 (59) | 59.0 | |
| May 18, 2019, 5 p.m. | 4.9 ppb (5) | 0.1 ppb (0) | 4.0 ppb (4) | 5.0 ppb (5) | N/A | 0.0 ppb (0) | 67.0 ppb (52) | 0.21 ppb (2) | 23.0 μg/m3 (21) | 16.6 μg/m3 (60) | 60.0 | |
| May 18, 2019, 4 p.m. | 4.2 ppb (4) | 0.2 ppb (0) | 4.0 ppb (4) | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 60.0 ppb (46) | 0.21 ppb (2) | 25.0 μg/m3 (23) | 16.3 μg/m3 (59) | 59.0 | |
| May 18, 2019, 3 p.m. | 3.1 ppb (3) | 0.1 ppb (0) | 3.0 ppb (3) | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 51.0 ppb (39) | 0.21 ppb (2) | 22.0 μg/m3 (20) | 15.1 μg/m3 (57) | 57.0 | |
| May 18, 2019, 2 p.m. | 4.8 ppb (4) | 0.4 ppb (0) | 4.0 ppb (4) | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 44.0 ppb (34) | 0.24 ppb (3) | 23.0 μg/m3 (21) | 15.1 μg/m3 (57) | 57.0 | |
| May 18, 2019, 1 p.m. | 24.1 ppb (22) | 10.2 ppb (9) | 24.0 ppb (22) | 14.0 ppb (13) | N/A | 0.0 ppb (0) | 20.0 ppb (15) | 0.45 ppb (5) | 25.0 μg/m3 (23) | 14.0 μg/m3 (54) | 54.0 | |
| May 18, 2019, noon | 75.4 ppb (73) | 65.3 ppb (62) | 76.0 ppb (73) | 10.0 ppb (9) | N/A | 0.0 ppb (0) | 0.0 ppb (0) | 0.83 ppb (9) | 28.0 μg/m3 (25) | 14.1 μg/m3 (54) | 73.0 | |
| May 18, 2019, 11 a.m. | 60.8 ppb (57) | 55.2 ppb (51) | 66.0 ppb (63) | 6.0 ppb (6) | N/A | 0.0 ppb (0) | 0.0 ppb (0) | 0.74 ppb (8) | 35.0 μg/m3 (32) | 15.7 μg/m3 (58) | 63.0 | |
| May 18, 2019, 10 a.m. | 39.9 ppb (37) | 34.3 ppb (32) | 43.0 ppb (40) | 6.0 ppb (6) | N/A | 0.0 ppb (0) | 0.0 ppb (0) | 0.63 ppb (7) | 40.0 μg/m3 (36) | 16.6 μg/m3 (60) | 60.0 | |
| May 18, 2019, 9 a.m. | 39.0 ppb (36) | 31.9 ppb (30) | 41.0 ppb (38) | 7.0 ppb (6) | N/A | 0.0 ppb (0) | 0.0 ppb (0) | 0.62 ppb (7) | 40.0 μg/m3 (36) | 16.2 μg/m3 (59) | 59.0 | |
| May 18, 2019, 8 a.m. | 42.7 ppb (40) | 36.4 ppb (34) | 45.0 ppb (42) | 6.0 ppb (6) | N/A | 0.0 ppb (0) | 0.0 ppb (0) | 0.65 ppb (7) | 40.0 μg/m3 (36) | 15.3 μg/m3 (57) | 57.0 | |
| May 18, 2019, 7 a.m. | 39.7 ppb (37) | 31.5 ppb (29) | 48.0 ppb (44) | 8.0 ppb (7) | N/A | 0.0 ppb (0) | 0.0 ppb (0) | N/A | 43.0 μg/m3 (39) | 15.6 μg/m3 (58) | 58.0 | |
| May 18, 2019, 6 a.m. | 40.8 ppb (38) | 30.7 ppb (28) | 43.0 ppb (40) | 10.0 ppb (9) | N/A | 0.0 ppb (0) | 0.0 ppb (0) | N/A | 41.0 μg/m3 (37) | 15.7 μg/m3 (58) | 58.0 | |
| May 18, 2019, 5 a.m. | 40.1 ppb (37) | 27.1 ppb (25) | 43.0 ppb (40) | 13.0 ppb (12) | N/A | 0.0 ppb (0) | 0.0 ppb (0) | 0.58 ppb (6) | 39.0 μg/m3 (35) | 14.7 μg/m3 (56) | 56.0 | |
| May 18, 2019, 4 a.m. | 34.8 ppb (32) | 19.0 ppb (18) | 38.0 ppb (35) | 16.0 ppb (15) | N/A | 0.0 ppb (0) | 0.0 ppb (0) | 0.55 ppb (6) | N/A | N/A | 35.0 | |
| May 18, 2019, 3 a.m. | 16.2 ppb (15) | 2.8 ppb (3) | 19.0 ppb (18) | 13.0 ppb (12) | N/A | 0.0 ppb (0) | 0.0 ppb (0) | 0.41 ppb (5) | 33.0 μg/m3 (30) | 13.1 μg/m3 (52) | 52.0 | |
| May 18, 2019, 2 a.m. | 15.3 ppb (14) | 0.2 ppb (0) | 17.0 ppb (16) | 15.0 ppb (14) | N/A | 0.0 ppb (0) | 4.0 ppb (3) | 0.38 ppb (4) | 30.0 μg/m3 (27) | 12.8 μg/m3 (52) | 52.0 | |
| May 18, 2019, 1 a.m. | 9.7 ppb (9) | 0.1 ppb (0) | 9.0 ppb (8) | 10.0 ppb (9) | N/A | 0.0 ppb (0) | 9.0 ppb (7) | 0.32 ppb (4) | 26.0 μg/m3 (24) | 12.2 μg/m3 (50) | 50.0 | |
| May 18, 2019, midnight | 7.6 ppb (7) | 0.0 ppb (0) | 8.0 ppb (7) | 8.0 ppb (7) | N/A | 0.0 ppb (0) | 19.0 ppb (15) | 0.26 ppb (3) | 29.0 μg/m3 (26) | 12.1 μg/m3 (50) | 50.0 | |
| May 17, 2019, 11 p.m. | 11.5 ppb (11) | 0.6 ppb (1) | 12.0 ppb (11) | 11.0 ppb (10) | N/A | 0.0 ppb (0) | 26.0 ppb (20) | 0.28 ppb (3) | 23.0 μg/m3 (21) | 11.4 μg/m3 (48) | 48.0 | |
| May 17, 2019, 10 p.m. | 4.7 ppb (4) | 0.3 ppb (0) | 5.0 ppb (5) | 5.0 ppb (5) | N/A | 0.0 ppb (0) | 29.0 ppb (22) | 0.22 ppb (2) | 20.0 μg/m3 (18) | 9.7 μg/m3 (40) | 40.0 | |
| May 17, 2019, 9 p.m. | 2.9 ppb (3) | 0.0 ppb (0) | 2.0 ppb (2) | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 49.0 ppb (38) | 0.18 ppb (2) | 35.0 μg/m3 (32) | 13.0 μg/m3 (52) | 52.0 | |
| May 17, 2019, 8 p.m. | 5.8 ppb (5) | 0.0 ppb (0) | 5.0 ppb (5) | 6.0 ppb (6) | N/A | 0.0 ppb (0) | 58.0 ppb (45) | 0.21 ppb (2) | 30.0 μg/m3 (27) | 14.7 μg/m3 (56) | 56.0 | |
| May 17, 2019, 7 p.m. | 4.5 ppb (4) | 0.0 ppb (0) | 4.0 ppb (4) | 5.0 ppb (5) | N/A | 0.0 ppb (0) | 69.0 ppb (53) | 0.19 ppb (2) | 22.0 μg/m3 (20) | 13.8 μg/m3 (54) | 54.0 | |
| May 17, 2019, 6 p.m. | 4.0 ppb (4) | 0.0 ppb (0) | 3.0 ppb (3) | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 69.0 ppb (53) | 0.19 ppb (2) | 22.0 μg/m3 (20) | 14.1 μg/m3 (54) | 54.0 | |
| May 17, 2019, 5 p.m. | 5.0 ppb (5) | 0.1 ppb (0) | 5.0 ppb (5) | 5.0 ppb (5) | N/A | 0.0 ppb (0) | 72.0 ppb (56) | 0.21 ppb (2) | 26.0 μg/m3 (24) | 14.9 μg/m3 (56) | 56.0 | |
| May 17, 2019, 4 p.m. | 5.3 ppb (5) | 0.1 ppb (0) | 5.0 ppb (5) | 5.0 ppb (5) | N/A | 0.0 ppb (0) | 71.0 ppb (55) | 0.23 ppb (3) | 28.0 μg/m3 (25) | 15.9 μg/m3 (58) | 58.0 | |
| May 17, 2019, 3 p.m. | 8.1 ppb (8) | 0.7 ppb (1) | 8.0 ppb (7) | 7.0 ppb (6) | N/A | 0.0 ppb (0) | 59.0 ppb (45) | 0.25 ppb (3) | 29.0 μg/m3 (26) | 15.8 μg/m3 (58) | 58.0 | |
| May 17, 2019, 2 p.m. | 10.0 ppb (9) | 1.3 ppb (1) | 10.0 ppb (9) | 9.0 ppb (8) | N/A | 1.0 ppb (1) | 44.0 ppb (34) | 0.26 ppb (3) | 27.0 μg/m3 (25) | 15.5 μg/m3 (57) | 57.0 | |
| May 17, 2019, 1 p.m. | 12.1 ppb (11) | 2.4 ppb (2) | 12.0 ppb (11) | 10.0 ppb (9) | N/A | 0.0 ppb (0) | 28.0 ppb (22) | 0.27 ppb (3) | 26.0 μg/m3 (24) | 13.6 μg/m3 (53) | 53.0 | |
| May 17, 2019, noon | 29.8 ppb (28) | 14.5 ppb (13) | 30.0 ppb (28) | 15.0 ppb (14) | N/A | 0.0 ppb (0) | 7.0 ppb (5) | 0.38 ppb (4) | 24.0 μg/m3 (22) | 13.4 μg/m3 (53) | 53.0 | |
| May 17, 2019, 11 a.m. | 53.2 ppb (49) | 41.2 ppb (38) | 56.0 ppb (52) | 12.0 ppb (11) | N/A | 0.0 ppb (0) | 0.0 ppb (0) | 0.43 ppb (5) | 27.0 μg/m3 (25) | 16.8 μg/m3 (60) | 60.0 | |
| May 17, 2019, 10 a.m. | 39.3 ppb (36) | 28.7 ppb (27) | 42.0 ppb (39) | 11.0 ppb (10) | N/A | 0.0 ppb (0) | 0.0 ppb (0) | 0.38 ppb (4) | 25.0 μg/m3 (23) | 16.1 μg/m3 (59) | 59.0 | |
| May 17, 2019, 9 a.m. | 33.0 ppb (31) | 24.0 ppb (22) | 35.0 ppb (32) | 9.0 ppb (8) | N/A | 0.0 ppb (0) | 0.0 ppb (0) | 0.37 ppb (4) | 24.0 μg/m3 (22) | 15.3 μg/m3 (57) | 57.0 | |
| May 17, 2019, 8 a.m. | 22.2 ppb (21) | 11.3 ppb (10) | 27.0 ppb (25) | 11.0 ppb (10) | N/A | 0.0 ppb (0) | 0.0 ppb (0) | 0.34 ppb (4) | 23.0 μg/m3 (21) | 15.4 μg/m3 (57) | 57.0 | |
| May 17, 2019, 7 a.m. | 17.4 ppb (16) | 3.8 ppb (4) | 18.0 ppb (17) | 14.0 ppb (13) | N/A | 0.0 ppb (0) | 0.0 ppb (0) | N/A | 23.0 μg/m3 (21) | 15.2 μg/m3 (57) | 57.0 | |
| May 17, 2019, 6 a.m. | 18.7 ppb (17) | 3.0 ppb (3) | 21.0 ppb (19) | 16.0 ppb (15) | N/A | 0.0 ppb (0) | 0.0 ppb (0) | N/A | 23.0 μg/m3 (21) | 14.7 μg/m3 (56) | 56.0 | |
| May 17, 2019, 5 a.m. | 20.1 ppb (19) | 1.7 ppb (2) | 24.0 ppb (22) | 18.0 ppb (17) | N/A | 0.0 ppb (0) | 1.0 ppb (1) | 0.34 ppb (4) | 22.0 μg/m3 (20) | 14.3 μg/m3 (55) | 55.0 | |
| May 17, 2019, 4 a.m. | 13.2 ppb (12) | 0.0 ppb (0) | 15.0 ppb (14) | 13.0 ppb (12) | N/A | 0.0 ppb (0) | 13.0 ppb (10) | 0.31 ppb (3) | N/A | N/A | 14.0 | |
| May 17, 2019, 3 a.m. | 13.4 ppb (12) | 0.0 ppb (0) | 14.0 ppb (13) | 13.0 ppb (12) | N/A | 0.0 ppb (0) | 16.0 ppb (12) | 0.31 ppb (3) | 22.0 μg/m3 (20) | 13.7 μg/m3 (54) | 54.0 | |
| May 17, 2019, 2 a.m. | 13.2 ppb (12) | -0.1 ppb (0) | 14.0 ppb (13) | 13.0 ppb (12) | N/A | 0.0 ppb (0) | 22.0 ppb (17) | 0.29 ppb (3) | 23.0 μg/m3 (21) | 13.0 μg/m3 (52) | 52.0 | |
| May 17, 2019, 1 a.m. | 7.4 ppb (7) | -0.1 ppb (0) | 7.0 ppb (6) | 8.0 ppb (7) | N/A | 0.0 ppb (0) | 37.0 ppb (28) | 0.26 ppb (3) | 23.0 μg/m3 (21) | 12.6 μg/m3 (51) | 51.0 | |
| May 17, 2019, midnight | 10.0 ppb (9) | -0.1 ppb (0) | 10.0 ppb (9) | 10.0 ppb (9) | N/A | 0.0 ppb (0) | 41.0 ppb (32) | 0.26 ppb (3) | 18.0 μg/m3 (16) | 10.3 μg/m3 (43) | 43.0 | |
| May 16, 2019, 11 p.m. | 5.9 ppb (5) | 0.0 ppb (0) | 6.0 ppb (6) | 6.0 ppb (6) | N/A | 0.0 ppb (0) | 50.0 ppb (38) | 0.2 ppb (2) | 17.0 μg/m3 (15) | 9.6 μg/m3 (40) | 40.0 | |
| May 16, 2019, 10 p.m. | 3.9 ppb (4) | 0.0 ppb (0) | 3.0 ppb (3) | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 53.0 ppb (41) | 0.19 ppb (2) | 17.0 μg/m3 (15) | 9.4 μg/m3 (39) | 41.0 | |
| May 16, 2019, 9 p.m. | 4.5 ppb (4) | 0.1 ppb (0) | 4.0 ppb (4) | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 55.0 ppb (42) | 0.2 ppb (2) | 18.0 μg/m3 (16) | 10.3 μg/m3 (43) | 43.0 | |
| May 16, 2019, 8 p.m. | 4.5 ppb (4) | 0.1 ppb (0) | 4.0 ppb (4) | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 58.0 ppb (45) | 0.21 ppb (2) | 21.0 μg/m3 (19) | 11.5 μg/m3 (48) | 48.0 | |
| May 16, 2019, 7 p.m. | 3.9 ppb (4) | 0.0 ppb (0) | 3.0 ppb (3) | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 61.0 ppb (47) | 0.21 ppb (2) | 21.0 μg/m3 (19) | 12.3 μg/m3 (51) | 51.0 | |
| May 16, 2019, 6 p.m. | 4.2 ppb (4) | 0.1 ppb (0) | 4.0 ppb (4) | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 61.0 ppb (47) | 0.21 ppb (2) | 22.0 μg/m3 (20) | 12.4 μg/m3 (51) | 51.0 | |
| May 16, 2019, 5 p.m. | 4.2 ppb (4) | 0.1 ppb (0) | 4.0 ppb (4) | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 62.0 ppb (48) | 0.22 ppb (2) | 22.0 μg/m3 (20) | 13.0 μg/m3 (52) | 52.0 | |
| May 16, 2019, 4 p.m. | 4.5 ppb (4) | 0.1 ppb (0) | 4.0 ppb (4) | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 60.0 ppb (46) | 0.22 ppb (2) | 24.0 μg/m3 (22) | 12.9 μg/m3 (52) | 52.0 | |
| May 16, 2019, 3 p.m. | 9.4 ppb (9) | 1.4 ppb (1) | 9.0 ppb (8) | 8.0 ppb (7) | N/A | 0.0 ppb (0) | 47.0 ppb (36) | 0.24 ppb (3) | 21.0 μg/m3 (19) | 11.9 μg/m3 (50) | 50.0 | |
| May 16, 2019, 2 p.m. | 9.4 ppb (9) | 1.6 ppb (1) | 9.0 ppb (8) | 8.0 ppb (7) | N/A | 0.0 ppb (0) | 38.0 ppb (29) | 0.25 ppb (3) | 22.0 μg/m3 (20) | 10.8 μg/m3 (45) | 45.0 | |
| May 16, 2019, 1 p.m. | 25.7 ppb (24) | 10.2 ppb (9) | 26.0 ppb (24) | 16.0 ppb (15) | N/A | 0.0 ppb (0) | 19.0 ppb (15) | 0.43 ppb (5) | 30.0 μg/m3 (27) | 13.6 μg/m3 (53) | 53.0 | |
| May 16, 2019, noon | 52.5 ppb (49) | 35.0 ppb (32) | 54.0 ppb (50) | 17.0 ppb (16) | N/A | 0.0 ppb (0) | 1.0 ppb (1) | 0.7 ppb (8) | 29.0 μg/m3 (26) | 15.1 μg/m3 (57) | 57.0 | |
| May 16, 2019, 8 a.m. | 70.6 ppb (68) | 52.5 ppb (49) | N/A | 18.0 ppb (17) | N/A | 0.0 ppb (0) | 0.0 ppb (0) | 0.76 ppb (8) | N/A | N/A | 68.0 | |
| May 16, 2019, 7 a.m. | 48.3 ppb (45) | 26.6 ppb (25) | N/A | 22.0 ppb (20) | N/A | 0.0 ppb (0) | 0.0 ppb (0) | N/A | 22.0 μg/m3 (20) | 13.6 μg/m3 (53) | 53.0 | |
| May 16, 2019, 6 a.m. | 43.4 ppb (40) | 22.5 ppb (21) | 48.0 ppb (44) | 21.0 ppb (19) | N/A | 0.0 ppb (0) | 0.0 ppb (0) | N/A | 21.0 μg/m3 (19) | 13.0 μg/m3 (52) | 52.0 | |
| May 16, 2019, 5 a.m. | 43.1 ppb (40) | 17.2 ppb (16) | 46.0 ppb (43) | 26.0 ppb (24) | N/A | 0.0 ppb (0) | 0.0 ppb (0) | 0.62 ppb (7) | 22.0 μg/m3 (20) | 13.4 μg/m3 (53) | 53.0 | |
| May 15, 2019, 6 a.m. | 35.2 ppb (33) | 16.5 ppb (15) | 36.0 ppb (33) | 19.0 ppb (18) | N/A | 0.0 ppb (0) | 0.0 ppb (0) | N/A | N/A | N/A | 33.0 | |
| May 15, 2019, 5 a.m. | 48.1 ppb (45) | 22.6 ppb (21) | 51.0 ppb (47) | 26.0 ppb (24) | N/A | 0.0 ppb (0) | 0.0 ppb (0) | 0.41 ppb (5) | 16.0 μg/m3 (15) | 8.7 μg/m3 (36) | 47.0 | |
| May 14, 2019, 7 a.m. | 14.2 ppb (13) | 0.1 ppb (0) | 15.0 ppb (14) | 14.0 ppb (13) | N/A | 0.0 ppb (0) | 10.0 ppb (8) | N/A | N/A | N/A | 14.0 | |
| May 14, 2019, 6 a.m. | 9.3 ppb (9) | -0.1 ppb (0) | 9.0 ppb (8) | 9.0 ppb (8) | N/A | 0.0 ppb (0) | 17.0 ppb (13) | N/A | 12.0 μg/m3 (11) | 5.6 μg/m3 (23) | 23.0 | |
| May 14, 2019, 5 a.m. | 7.7 ppb (7) | -0.1 ppb (0) | 7.0 ppb (6) | 8.0 ppb (7) | N/A | 0.0 ppb (0) | 20.0 ppb (15) | 0.15 ppb (2) | 11.0 μg/m3 (10) | 5.6 μg/m3 (23) | 23.0 | |
| May 13, 2019, 5 p.m. | 3.1 ppb (3) | 0.3 ppb (0) | 3.0 ppb (3) | 3.0 ppb (3) | N/A | 0.0 ppb (0) | 45.0 ppb (35) | 0.13 ppb (1) | N/A | N/A | 35.0 | |
| May 13, 2019, 4 p.m. | 4.7 ppb (4) | 0.7 ppb (1) | 4.0 ppb (4) | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 41.0 ppb (32) | 0.15 ppb (2) | 13.0 μg/m3 (12) | 4.6 μg/m3 (19) | 32.0 | |
| May 13, 2019, 3 p.m. | 5.2 ppb (5) | 1.0 ppb (1) | 5.0 ppb (5) | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 35.0 ppb (27) | 0.15 ppb (2) | 14.0 μg/m3 (13) | 4.8 μg/m3 (20) | 27.0 | |
| May 13, 2019, 2 p.m. | 6.1 ppb (6) | 1.5 ppb (1) | 6.0 ppb (6) | 5.0 ppb (5) | N/A | 0.0 ppb (0) | 27.0 ppb (21) | 0.16 ppb (2) | 13.0 μg/m3 (12) | 5.3 μg/m3 (22) | 22.0 | |
| May 13, 2019, 1 p.m. | 7.2 ppb (7) | 2.0 ppb (2) | 7.0 ppb (6) | 5.0 ppb (5) | N/A | 0.0 ppb (0) | 20.0 ppb (15) | 0.18 ppb (2) | 13.0 μg/m3 (12) | 5.2 μg/m3 (22) | 22.0 | |
| May 13, 2019, noon | 7.2 ppb (7) | 1.4 ppb (1) | 7.0 ppb (6) | 6.0 ppb (6) | N/A | 0.0 ppb (0) | 15.0 ppb (12) | 0.19 ppb (2) | 17.0 μg/m3 (15) | 5.6 μg/m3 (23) | 23.0 | |
| May 13, 2019, 11 a.m. | 5.2 ppb (5) | 0.5 ppb (0) | 5.0 ppb (5) | 5.0 ppb (5) | N/A | 0.0 ppb (0) | 11.0 ppb (8) | 0.18 ppb (2) | 21.0 μg/m3 (19) | 5.8 μg/m3 (24) | 24.0 | |
| May 13, 2019, 10 a.m. | 5.8 ppb (5) | 0.1 ppb (0) | 6.0 ppb (6) | 6.0 ppb (6) | N/A | 0.0 ppb (0) | 9.0 ppb (7) | 0.18 ppb (2) | 22.0 μg/m3 (20) | 6.4 μg/m3 (27) | 27.0 | |
| May 13, 2019, 9 a.m. | 6.6 ppb (6) | 0.0 ppb (0) | 7.0 ppb (6) | 7.0 ppb (6) | N/A | 0.0 ppb (0) | N/A | 0.18 ppb (2) | 25.0 μg/m3 (23) | 6.7 μg/m3 (28) | 28.0 | |
| May 13, 2019, 8 a.m. | 5.1 ppb (5) | 0.0 ppb (0) | 5.0 ppb (5) | 5.0 ppb (5) | N/A | 0.0 ppb (0) | N/A | 0.19 ppb (2) | 28.0 μg/m3 (25) | 7.0 μg/m3 (29) | 29.0 | |
| May 13, 2019, 7 a.m. | 4.2 ppb (4) | 0.0 ppb (0) | 4.0 ppb (4) | 4.0 ppb (4) | N/A | 0.0 ppb (0) | N/A | N/A | 28.0 μg/m3 (25) | 6.8 μg/m3 (28) | 28.0 | |
| May 13, 2019, 6 a.m. | 9.2 ppb (9) | 1.5 ppb (1) | 9.0 ppb (8) | 8.0 ppb (7) | N/A | 0.0 ppb (0) | 3.0 ppb (2) | N/A | 31.0 μg/m3 (28) | 7.7 μg/m3 (32) | 32.0 | |
| May 13, 2019, 5 a.m. | 9.9 ppb (9) | 0.8 ppb (1) | 10.0 ppb (9) | 9.0 ppb (8) | N/A | 0.0 ppb (0) | 1.0 ppb (1) | 0.29 ppb (3) | 34.0 μg/m3 (31) | 8.3 μg/m3 (35) | 35.0 | |
| May 13, 2019, 4 a.m. | 11.0 ppb (10) | 1.4 ppb (1) | 12.0 ppb (11) | 10.0 ppb (9) | N/A | 0.0 ppb (0) | 0.0 ppb (0) | 0.31 ppb (3) | 32.0 μg/m3 (29) | 8.6 μg/m3 (36) | 36.0 | |
| May 13, 2019, 3 a.m. | 11.5 ppb (11) | 1.0 ppb (1) | 13.0 ppb (12) | 10.0 ppb (9) | N/A | 0.0 ppb (0) | 1.0 ppb (1) | 0.31 ppb (3) | 30.0 μg/m3 (27) | 8.3 μg/m3 (35) | 35.0 | |
| May 13, 2019, 2 a.m. | 9.3 ppb (9) | 0.3 ppb (0) | 11.0 ppb (10) | 9.0 ppb (8) | N/A | 0.0 ppb (0) | 3.0 ppb (2) | 0.29 ppb (3) | 31.0 μg/m3 (28) | 7.8 μg/m3 (32) | 32.0 | |
| May 13, 2019, 1 a.m. | 6.6 ppb (6) | 0.0 ppb (0) | 7.0 ppb (6) | 7.0 ppb (6) | N/A | 0.0 ppb (0) | 9.0 ppb (7) | 0.24 ppb (3) | 23.0 μg/m3 (21) | 6.8 μg/m3 (28) | 28.0 | |
| May 13, 2019, midnight | 4.1 ppb (4) | 0.0 ppb (0) | 4.0 ppb (4) | 4.0 ppb (4) | N/A | 0.0 ppb (0) | 15.0 ppb (12) | 0.2 ppb (2) | 19.0 μg/m3 (17) | 5.9 μg/m3 (25) | 25.0 | |
| May 12, 2019, 11 p.m. | N/A | N/A | 2.0 ppb (2) | N/A | N/A | 0.0 ppb (0) | 23.0 ppb (18) | 0.17 ppb (2) | 14.0 μg/m3 (13) | 5.5 μg/m3 (23) | 23.0 | |
| May 12, 2019, 10 p.m. | N/A | N/A | 3.0 ppb (3) | N/A | N/A | 0.0 ppb (0) | 24.0 ppb (18) | 0.18 ppb (2) | 15.0 μg/m3 (14) | 6.1 μg/m3 (25) | 25.0 | |
| May 12, 2019, 9 p.m. | N/A | N/A | 3.0 ppb (3) | N/A | N/A | 0.0 ppb (0) | 27.0 ppb (21) | 0.17 ppb (2) | 13.0 μg/m3 (12) | 5.7 μg/m3 (24) | 24.0 | |
| May 12, 2019, 8 p.m. | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 0.0 ppb (0) | 32.0 ppb (25) | 0.15 ppb (2) | 10.0 μg/m3 (9) | 5.0 μg/m3 (21) | 25.0 | |
| May 12, 2019, 7 p.m. | N/A | N/A | 2.0 ppb (2) | N/A | N/A | 0.0 ppb (0) | 36.0 ppb (28) | 0.16 ppb (2) | 10.0 μg/m3 (9) | 4.2 μg/m3 (18) | 28.0 | |
| May 12, 2019, 6 p.m. | 2.4 ppb (2) | 0.2 ppb (0) | 2.0 ppb (2) | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 40.0 ppb (31) | 0.17 ppb (2) | 8.0 μg/m3 (7) | 3.8 μg/m3 (16) | 31.0 | |
| May 12, 2019, 5 p.m. | 1.7 ppb (2) | 0.1 ppb (0) | 1.0 ppb (1) | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 36.0 ppb (28) | 0.16 ppb (2) | 9.0 μg/m3 (8) | 3.7 μg/m3 (15) | 28.0 | |
| May 12, 2019, 4 p.m. | 2.1 ppb (2) | 0.2 ppb (0) | 2.0 ppb (2) | 2.0 ppb (2) | N/A | 0.0 ppb (0) | 29.0 ppb (22) | 0.16 ppb (2) | 11.0 μg/m3 (10) | 4.3 μg/m3 (18) | 22.0 |