Ontario CA, US: 34.0309, -117.617403
| Date Observed (UTC) | NOX | NO | NOY | NO2 | NO2Y | SO2 | OZONE | CO | PM10 | PM2.5 | AQI | AQI/500 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan. 18, 2019, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| Jan. 18, 2019, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| Jan. 18, 2019, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| Jan. 18, 2019, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| Jan. 18, 2019, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| Jan. 18, 2019, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| Jan. 18, 2019, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| Jan. 18, 2019, noon | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| Jan. 18, 2019, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| Jan. 18, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| Jan. 18, 2019, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| Jan. 18, 2019, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| Jan. 18, 2019, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| Jan. 18, 2019, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| Jan. 18, 2019, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| Jan. 18, 2019, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| Jan. 18, 2019, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| Jan. 18, 2019, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| Jan. 18, 2019, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| Jan. 18, 2019, midnight | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| Jan. 17, 2019, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| Jan. 17, 2019, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| Jan. 17, 2019, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| Jan. 17, 2019, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| Jan. 17, 2019, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| Jan. 17, 2019, 6 p.m. | 70.7 ppb (68) | 40.9 ppb (38) | N/A | 30.0 ppb (28) | N/A | N/A | N/A | N/A | N/A | N/A | 68.0 | |
| Jan. 17, 2019, 5 p.m. | 50.1 ppb (46) | 27.2 ppb (25) | N/A | 23.0 ppb (21) | N/A | N/A | N/A | N/A | N/A | N/A | 46.0 | |
| Jan. 17, 2019, 4 p.m. | 66.2 ppb (63) | 36.1 ppb (33) | N/A | 30.0 ppb (28) | N/A | N/A | N/A | N/A | N/A | N/A | 63.0 | |
| Jan. 17, 2019, 3 p.m. | 67.1 ppb (64) | 38.5 ppb (36) | N/A | 29.0 ppb (27) | N/A | N/A | N/A | N/A | N/A | N/A | 64.0 | |
| Jan. 17, 2019, 2 p.m. | 82.7 ppb (81) | 51.2 ppb (47) | N/A | 31.0 ppb (29) | N/A | N/A | N/A | N/A | N/A | N/A | 81.0 | |
| Jan. 17, 2019, 1 p.m. | 76.2 ppb (74) | 45.3 ppb (42) | N/A | 31.0 ppb (29) | N/A | N/A | N/A | N/A | N/A | N/A | 74.0 | |
| Jan. 17, 2019, noon | 68.0 ppb (65) | 36.2 ppb (34) | N/A | 32.0 ppb (30) | N/A | N/A | N/A | N/A | N/A | N/A | 65.0 | |
| Jan. 17, 2019, 11 a.m. | 53.4 ppb (49) | 21.7 ppb (20) | N/A | 32.0 ppb (30) | N/A | N/A | N/A | N/A | N/A | N/A | 49.0 | |
| Jan. 17, 2019, 10 a.m. | 46.9 ppb (43) | 20.3 ppb (19) | N/A | 27.0 ppb (25) | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 | |
| Jan. 17, 2019, 9 a.m. | 33.2 ppb (31) | 13.1 ppb (12) | N/A | 20.0 ppb (19) | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 | |
| Jan. 17, 2019, 8 a.m. | 45.2 ppb (42) | 18.1 ppb (17) | N/A | 27.0 ppb (25) | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 | |
| Jan. 17, 2019, 7 a.m. | 50.5 ppb (47) | 21.7 ppb (20) | N/A | 29.0 ppb (27) | N/A | N/A | N/A | N/A | N/A | N/A | 47.0 | |
| Jan. 17, 2019, 6 a.m. | 56.0 ppb (52) | 27.7 ppb (26) | N/A | 28.0 ppb (26) | N/A | N/A | N/A | N/A | N/A | N/A | 52.0 | |
| Jan. 17, 2019, 5 a.m. | 32.9 ppb (30) | 12.4 ppb (11) | N/A | 20.0 ppb (19) | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 | |
| Jan. 17, 2019, 4 a.m. | 36.8 ppb (34) | 13.4 ppb (12) | N/A | 23.0 ppb (21) | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 | |
| Jan. 17, 2019, 3 a.m. | 42.3 ppb (39) | 15.2 ppb (14) | N/A | 27.0 ppb (25) | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 | |
| Jan. 17, 2019, 2 a.m. | 45.8 ppb (42) | 17.9 ppb (17) | N/A | 28.0 ppb (26) | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 | |
| Jan. 17, 2019, 1 a.m. | 73.6 ppb (71) | 39.7 ppb (37) | N/A | 34.0 ppb (31) | N/A | N/A | N/A | N/A | N/A | N/A | 71.0 | |
| Jan. 17, 2019, midnight | 24.1 ppb (22) | 4.7 ppb (4) | N/A | 19.0 ppb (18) | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 | |
| Jan. 16, 2019, 11 p.m. | 13.4 ppb (12) | -0.1 ppb (0) | N/A | 14.0 ppb (13) | N/A | N/A | N/A | N/A | N/A | N/A | 13.0 | |
| Jan. 16, 2019, 10 p.m. | 14.4 ppb (13) | 1.9 ppb (2) | N/A | 13.0 ppb (12) | N/A | N/A | N/A | N/A | N/A | N/A | 13.0 | |
| Jan. 16, 2019, 9 p.m. | 27.7 ppb (26) | 9.4 ppb (9) | N/A | 18.0 ppb (17) | N/A | N/A | N/A | N/A | N/A | N/A | 26.0 | |
| Jan. 16, 2019, 8 p.m. | 76.4 ppb (74) | 42.2 ppb (39) | N/A | 34.0 ppb (31) | N/A | N/A | N/A | N/A | N/A | N/A | 74.0 | |
| Jan. 16, 2019, 7 p.m. | 57.0 ppb (53) | 26.1 ppb (24) | N/A | 31.0 ppb (29) | N/A | N/A | N/A | N/A | N/A | N/A | 53.0 | |
| Jan. 16, 2019, 6 p.m. | 22.0 ppb (20) | 4.8 ppb (4) | N/A | 17.0 ppb (16) | N/A | N/A | N/A | N/A | N/A | N/A | 20.0 | |
| Jan. 16, 2019, 5 p.m. | 75.5 ppb (73) | 42.5 ppb (39) | N/A | 33.0 ppb (31) | N/A | N/A | N/A | N/A | N/A | N/A | 73.0 | |
| Jan. 16, 2019, 4 p.m. | 92.7 ppb (91) | 53.9 ppb (50) | N/A | 39.0 ppb (36) | N/A | N/A | N/A | N/A | N/A | N/A | 91.0 | |
| Jan. 16, 2019, 3 p.m. | 106.8 ppb (101) | 63.3 ppb (60) | N/A | 43.0 ppb (40) | N/A | N/A | N/A | N/A | N/A | N/A | 101.0 | |
| Jan. 16, 2019, 2 p.m. | 35.6 ppb (33) | 6.3 ppb (6) | N/A | 29.0 ppb (27) | N/A | N/A | N/A | N/A | N/A | N/A | 33.0 | |
| Jan. 16, 2019, 1 p.m. | 24.8 ppb (23) | 2.3 ppb (2) | N/A | 22.0 ppb (20) | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 | |
| Jan. 16, 2019, noon | 13.7 ppb (13) | 0.3 ppb (0) | N/A | 13.0 ppb (12) | N/A | N/A | N/A | N/A | N/A | N/A | 13.0 | |
| Jan. 16, 2019, 11 a.m. | 11.5 ppb (11) | -1.5 ppb (0) | N/A | 13.0 ppb (12) | N/A | N/A | N/A | N/A | N/A | N/A | 12.0 | |
| Jan. 16, 2019, 10 a.m. | 13.7 ppb (13) | -1.6 ppb (0) | N/A | 15.0 ppb (14) | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 | |
| Jan. 16, 2019, 9 a.m. | 6.9 ppb (6) | -1.8 ppb (0) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | N/A | N/A | N/A | 8.0 | |
| Jan. 16, 2019, 8 a.m. | 4.3 ppb (4) | -1.9 ppb (0) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | N/A | N/A | N/A | 6.0 | |
| Jan. 16, 2019, 7 a.m. | 7.0 ppb (6) | -1.9 ppb (0) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | N/A | N/A | N/A | 8.0 | |
| Jan. 16, 2019, 6 a.m. | 7.4 ppb (7) | -1.8 ppb (0) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | N/A | N/A | N/A | 8.0 | |
| Jan. 16, 2019, 5 a.m. | 7.7 ppb (7) | -1.9 ppb (0) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 | |
| Jan. 16, 2019, 4 a.m. | 12.0 ppb (11) | -1.9 ppb (0) | N/A | 14.0 ppb (13) | N/A | N/A | N/A | N/A | N/A | N/A | 13.0 | |
| Jan. 16, 2019, 3 a.m. | 17.4 ppb (16) | -1.6 ppb (0) | N/A | 19.0 ppb (18) | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 | |
| Jan. 16, 2019, 2 a.m. | 25.6 ppb (24) | -0.4 ppb (0) | N/A | 26.0 ppb (24) | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 | |
| Jan. 16, 2019, 1 a.m. | 17.2 ppb (16) | -1.7 ppb (0) | N/A | 19.0 ppb (18) | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 | |
| Jan. 16, 2019, midnight | 17.9 ppb (17) | -1.3 ppb (0) | N/A | 19.0 ppb (18) | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 | |
| Jan. 15, 2019, 11 p.m. | 15.3 ppb (14) | -1.2 ppb (0) | N/A | 17.0 ppb (16) | N/A | N/A | N/A | N/A | N/A | N/A | 16.0 | |
| Jan. 15, 2019, 10 p.m. | 18.9 ppb (18) | 3.6 ppb (3) | N/A | 15.0 ppb (14) | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 | |
| Jan. 15, 2019, 9 p.m. | 71.6 ppb (69) | 32.0 ppb (30) | N/A | 40.0 ppb (37) | N/A | N/A | N/A | N/A | N/A | N/A | 69.0 | |
| Jan. 15, 2019, 8 p.m. | 71.6 ppb (69) | 33.1 ppb (31) | N/A | 38.0 ppb (35) | N/A | N/A | N/A | N/A | N/A | N/A | 69.0 | |
| Jan. 15, 2019, 7 p.m. | 72.4 ppb (70) | 36.8 ppb (34) | N/A | 36.0 ppb (33) | N/A | N/A | N/A | N/A | N/A | N/A | 70.0 | |
| Jan. 15, 2019, 6 p.m. | 99.8 ppb (99) | 61.8 ppb (58) | N/A | 38.0 ppb (35) | N/A | N/A | N/A | N/A | N/A | N/A | 99.0 | |
| Jan. 15, 2019, 5 p.m. | 153.9 ppb (110) | 115.3 ppb (103) | N/A | 39.0 ppb (36) | N/A | N/A | N/A | N/A | N/A | N/A | 110.0 | |
| Jan. 15, 2019, 4 p.m. | 144.7 ppb (108) | 105.7 ppb (101) | N/A | 39.0 ppb (36) | N/A | N/A | N/A | N/A | N/A | N/A | 108.0 | |
| Jan. 15, 2019, 3 p.m. | 111.1 ppb (102) | 76.4 ppb (74) | N/A | 35.0 ppb (32) | N/A | N/A | N/A | N/A | N/A | N/A | 102.0 | |
| Jan. 15, 2019, 2 p.m. | 91.4 ppb (90) | 59.4 ppb (56) | N/A | 32.0 ppb (30) | N/A | N/A | N/A | N/A | N/A | N/A | 90.0 | |
| Jan. 15, 2019, 1 p.m. | 76.2 ppb (74) | 44.6 ppb (41) | N/A | 32.0 ppb (30) | N/A | N/A | N/A | N/A | N/A | N/A | 74.0 | |
| Jan. 15, 2019, noon | 77.8 ppb (75) | 45.4 ppb (42) | N/A | 32.0 ppb (30) | N/A | N/A | N/A | N/A | N/A | N/A | 75.0 | |
| Jan. 15, 2019, 11 a.m. | 61.8 ppb (58) | 31.3 ppb (29) | N/A | 31.0 ppb (29) | N/A | N/A | N/A | N/A | N/A | N/A | 58.0 | |
| Jan. 15, 2019, 10 a.m. | 55.4 ppb (51) | 20.4 ppb (19) | N/A | 35.0 ppb (32) | N/A | N/A | N/A | N/A | N/A | N/A | 51.0 | |
| Jan. 15, 2019, 9 a.m. | 40.2 ppb (37) | 6.0 ppb (6) | N/A | 34.0 ppb (31) | N/A | N/A | N/A | N/A | N/A | N/A | 37.0 | |
| Jan. 15, 2019, 8 a.m. | 22.4 ppb (21) | -1.0 ppb (0) | N/A | 23.0 ppb (21) | N/A | N/A | N/A | N/A | N/A | N/A | 21.0 | |
| Jan. 15, 2019, 7 a.m. | 17.8 ppb (16) | -1.2 ppb (0) | N/A | 19.0 ppb (18) | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 | |
| Jan. 15, 2019, 6 a.m. | 30.5 ppb (28) | 4.7 ppb (4) | N/A | 26.0 ppb (24) | N/A | N/A | N/A | N/A | N/A | N/A | 28.0 | |
| Jan. 15, 2019, 5 a.m. | 15.0 ppb (14) | -0.7 ppb (0) | N/A | 16.0 ppb (15) | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 | |
| Jan. 15, 2019, 4 a.m. | 14.1 ppb (13) | -1.8 ppb (0) | N/A | 16.0 ppb (15) | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 | |
| Jan. 15, 2019, 3 a.m. | 14.2 ppb (13) | -1.4 ppb (0) | N/A | 16.0 ppb (15) | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 | |
| Jan. 15, 2019, 2 a.m. | 14.2 ppb (13) | -1.7 ppb (0) | N/A | 16.0 ppb (15) | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 | |
| Jan. 15, 2019, 1 a.m. | 22.1 ppb (20) | 0.0 ppb (0) | N/A | 22.0 ppb (20) | N/A | N/A | N/A | N/A | N/A | N/A | 20.0 | |
| Jan. 15, 2019, midnight | 33.1 ppb (31) | 8.6 ppb (8) | N/A | 25.0 ppb (23) | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 | |
| Jan. 14, 2019, 11 p.m. | 22.5 ppb (21) | 2.1 ppb (2) | N/A | 20.0 ppb (19) | N/A | N/A | N/A | N/A | N/A | N/A | 21.0 | |
| Jan. 14, 2019, 10 p.m. | 47.2 ppb (44) | 17.5 ppb (16) | N/A | 30.0 ppb (28) | N/A | N/A | N/A | N/A | N/A | N/A | 44.0 | |
| Jan. 14, 2019, 9 p.m. | 33.7 ppb (31) | 7.5 ppb (7) | N/A | 26.0 ppb (24) | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 | |
| Jan. 14, 2019, 8 p.m. | 77.9 ppb (75) | 34.0 ppb (31) | N/A | 44.0 ppb (41) | N/A | N/A | N/A | N/A | N/A | N/A | 75.0 | |
| Jan. 14, 2019, 7 p.m. | 82.5 ppb (80) | 38.2 ppb (35) | N/A | 44.0 ppb (41) | N/A | N/A | N/A | N/A | N/A | N/A | 80.0 | |
| Jan. 14, 2019, 6 p.m. | 129.2 ppb (105) | 77.9 ppb (75) | N/A | 51.0 ppb (47) | N/A | N/A | N/A | N/A | N/A | N/A | 105.0 | |
| Jan. 14, 2019, 5 p.m. | 73.7 ppb (71) | 33.0 ppb (31) | N/A | 41.0 ppb (38) | N/A | N/A | N/A | N/A | N/A | N/A | 71.0 | |
| Jan. 14, 2019, 4 p.m. | 88.7 ppb (87) | 46.6 ppb (43) | N/A | 42.0 ppb (39) | N/A | N/A | N/A | N/A | N/A | N/A | 87.0 | |
| Jan. 14, 2019, 3 p.m. | 106.2 ppb (101) | 59.9 ppb (56) | N/A | 46.0 ppb (43) | N/A | N/A | N/A | N/A | N/A | N/A | 101.0 | |
| Jan. 14, 2019, 2 p.m. | 76.2 ppb (74) | 36.9 ppb (34) | N/A | 39.0 ppb (36) | N/A | N/A | N/A | N/A | N/A | N/A | 74.0 | |
| Jan. 14, 2019, 1 p.m. | 63.3 ppb (60) | 26.3 ppb (24) | N/A | 37.0 ppb (34) | N/A | N/A | N/A | N/A | N/A | N/A | 60.0 | |
| Jan. 14, 2019, noon | 44.6 ppb (41) | 11.9 ppb (11) | N/A | 33.0 ppb (31) | N/A | N/A | N/A | N/A | N/A | N/A | 41.0 | |
| Jan. 14, 2019, 11 a.m. | 53.8 ppb (50) | 16.7 ppb (15) | N/A | 37.0 ppb (34) | N/A | N/A | N/A | N/A | N/A | N/A | 50.0 | |
| Jan. 14, 2019, 10 a.m. | 37.8 ppb (35) | 4.1 ppb (4) | N/A | 34.0 ppb (31) | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 | |
| Jan. 14, 2019, 9 a.m. | 34.0 ppb (31) | 2.6 ppb (2) | N/A | 31.0 ppb (29) | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 | |
| Jan. 14, 2019, 8 a.m. | 33.7 ppb (31) | 2.9 ppb (3) | N/A | 31.0 ppb (29) | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 | |
| Jan. 14, 2019, 7 a.m. | 24.3 ppb (23) | -1.4 ppb (0) | N/A | 26.0 ppb (24) | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 | |
| Jan. 14, 2019, 6 a.m. | 24.4 ppb (23) | -0.9 ppb (0) | N/A | 25.0 ppb (23) | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 | |
| Jan. 14, 2019, 5 a.m. | 44.1 ppb (41) | 14.6 ppb (14) | N/A | 29.0 ppb (27) | N/A | N/A | N/A | N/A | N/A | N/A | 41.0 | |
| Jan. 14, 2019, 4 a.m. | 57.6 ppb (54) | 22.2 ppb (21) | N/A | 35.0 ppb (32) | N/A | N/A | N/A | N/A | N/A | N/A | 54.0 | |
| Jan. 14, 2019, 3 a.m. | 32.1 ppb (30) | 4.6 ppb (4) | N/A | 27.0 ppb (25) | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 | |
| Jan. 14, 2019, 2 a.m. | 17.8 ppb (16) | -1.3 ppb (0) | N/A | 19.0 ppb (18) | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 | |
| Jan. 14, 2019, 1 a.m. | 13.0 ppb (12) | -0.4 ppb (0) | N/A | 13.0 ppb (12) | N/A | N/A | N/A | N/A | N/A | N/A | 12.0 | |
| Jan. 14, 2019, midnight | 15.3 ppb (14) | 1.5 ppb (1) | N/A | 14.0 ppb (13) | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 | |
| Jan. 13, 2019, 11 p.m. | 32.9 ppb (30) | 10.9 ppb (10) | N/A | 22.0 ppb (20) | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 | |
| Jan. 13, 2019, 10 p.m. | 25.1 ppb (23) | 7.5 ppb (7) | N/A | 18.0 ppb (17) | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 | |
| Jan. 13, 2019, 9 p.m. | 11.1 ppb (10) | 1.0 ppb (1) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 | |
| Jan. 13, 2019, 8 p.m. | 28.5 ppb (26) | 10.5 ppb (10) | N/A | 18.0 ppb (17) | N/A | N/A | N/A | N/A | N/A | N/A | 26.0 | |
| Jan. 13, 2019, 7 p.m. | 26.1 ppb (24) | 10.0 ppb (9) | N/A | 16.0 ppb (15) | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 | |
| Jan. 13, 2019, 6 p.m. | 40.9 ppb (38) | 20.1 ppb (19) | N/A | 21.0 ppb (19) | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 | |
| Jan. 13, 2019, 5 p.m. | 36.6 ppb (34) | 15.8 ppb (15) | N/A | 21.0 ppb (19) | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 | |
| Jan. 13, 2019, 5 a.m. | 44.4 ppb (41) | 14.1 ppb (13) | N/A | 30.0 ppb (28) | N/A | N/A | N/A | N/A | N/A | N/A | 41.0 | |
| Jan. 13, 2019, 4 a.m. | 48.6 ppb (45) | 17.0 ppb (16) | N/A | 32.0 ppb (30) | N/A | N/A | N/A | N/A | N/A | N/A | 45.0 | |
| Jan. 13, 2019, 3 a.m. | 33.6 ppb (31) | 4.9 ppb (5) | N/A | 29.0 ppb (27) | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 | |
| Jan. 13, 2019, 2 a.m. | 26.9 ppb (25) | 1.1 ppb (1) | N/A | 26.0 ppb (24) | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 | |
| Jan. 13, 2019, 1 a.m. | 38.9 ppb (36) | 9.1 ppb (8) | N/A | 30.0 ppb (28) | N/A | N/A | N/A | N/A | N/A | N/A | 36.0 | |
| Jan. 13, 2019, midnight | 18.4 ppb (17) | 2.3 ppb (2) | N/A | 16.0 ppb (15) | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 | |
| Jan. 12, 2019, 11 p.m. | 7.5 ppb (7) | -0.3 ppb (0) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 | |
| Jan. 12, 2019, 10 p.m. | 36.3 ppb (34) | 13.9 ppb (13) | N/A | 22.0 ppb (20) | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 | |
| Jan. 12, 2019, 9 p.m. | 4.0 ppb (4) | -1.9 ppb (0) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | N/A | N/A | N/A | 6.0 | |
| Jan. 12, 2019, 8 p.m. | 24.8 ppb (23) | 7.5 ppb (7) | N/A | 17.0 ppb (16) | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 | |
| Jan. 12, 2019, 7 p.m. | 45.2 ppb (42) | 19.4 ppb (18) | N/A | 26.0 ppb (24) | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 | |
| Jan. 12, 2019, 6 p.m. | 45.3 ppb (42) | 19.7 ppb (18) | N/A | 26.0 ppb (24) | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 | |
| Jan. 12, 2019, 5 p.m. | 50.7 ppb (47) | 21.9 ppb (20) | N/A | 29.0 ppb (27) | N/A | N/A | N/A | N/A | N/A | N/A | 47.0 | |
| Jan. 12, 2019, 4 p.m. | 29.5 ppb (27) | 5.3 ppb (5) | N/A | 24.0 ppb (22) | N/A | N/A | N/A | N/A | N/A | N/A | 27.0 | |
| Jan. 12, 2019, 3 p.m. | 24.6 ppb (23) | 2.7 ppb (3) | N/A | 22.0 ppb (20) | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 | |
| Jan. 12, 2019, 2 p.m. | 27.0 ppb (25) | 5.4 ppb (5) | N/A | 22.0 ppb (20) | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 | |
| Jan. 12, 2019, 1 p.m. | 2.7 ppb (3) | -2.2 ppb (0) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 | |
| Jan. 12, 2019, noon | 21.3 ppb (20) | 5.2 ppb (5) | N/A | 16.0 ppb (15) | N/A | N/A | N/A | N/A | N/A | N/A | 20.0 | |
| Jan. 12, 2019, 11 a.m. | 36.6 ppb (34) | 8.6 ppb (8) | N/A | 28.0 ppb (26) | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 | |
| Jan. 12, 2019, 10 a.m. | 30.6 ppb (28) | 3.8 ppb (4) | N/A | 27.0 ppb (25) | N/A | N/A | N/A | N/A | N/A | N/A | 28.0 | |
| Jan. 12, 2019, 9 a.m. | 78.8 ppb (76) | 42.9 ppb (40) | N/A | 36.0 ppb (33) | N/A | N/A | N/A | N/A | N/A | N/A | 76.0 | |
| Jan. 12, 2019, 8 a.m. | 86.5 ppb (85) | 47.8 ppb (44) | N/A | 39.0 ppb (36) | N/A | N/A | N/A | N/A | N/A | N/A | 85.0 | |
| Jan. 12, 2019, 7 a.m. | 83.5 ppb (81) | 44.6 ppb (41) | N/A | 39.0 ppb (36) | N/A | N/A | N/A | N/A | N/A | N/A | 81.0 | |
| Jan. 12, 2019, 6 a.m. | 84.5 ppb (82) | 44.8 ppb (41) | N/A | 40.0 ppb (37) | N/A | N/A | N/A | N/A | N/A | N/A | 82.0 | |
| Jan. 12, 2019, 5 a.m. | 43.2 ppb (40) | 9.3 ppb (9) | N/A | 34.0 ppb (31) | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 | |
| Jan. 12, 2019, 4 a.m. | 87.1 ppb (85) | 46.6 ppb (43) | N/A | 41.0 ppb (38) | N/A | N/A | N/A | N/A | N/A | N/A | 85.0 | |
| Jan. 12, 2019, 3 a.m. | 57.3 ppb (54) | 21.4 ppb (20) | N/A | 36.0 ppb (33) | N/A | N/A | N/A | N/A | N/A | N/A | 54.0 | |
| Jan. 12, 2019, 2 a.m. | 27.6 ppb (26) | 2.9 ppb (3) | N/A | 25.0 ppb (23) | N/A | N/A | N/A | N/A | N/A | N/A | 26.0 | |
| Jan. 12, 2019, 1 a.m. | 59.5 ppb (56) | 20.1 ppb (19) | N/A | 39.0 ppb (36) | N/A | N/A | N/A | N/A | N/A | N/A | 56.0 | |
| Jan. 12, 2019, midnight | 84.6 ppb (83) | 41.1 ppb (38) | N/A | 44.0 ppb (41) | N/A | N/A | N/A | N/A | N/A | N/A | 83.0 | |
| Jan. 11, 2019, 11 p.m. | 83.9 ppb (82) | 40.7 ppb (38) | N/A | 43.0 ppb (40) | N/A | N/A | N/A | N/A | N/A | N/A | 82.0 | |
| Jan. 11, 2019, 10 p.m. | 105.3 ppb (101) | 55.1 ppb (51) | N/A | 50.0 ppb (46) | N/A | N/A | N/A | N/A | N/A | N/A | 101.0 | |
| Jan. 11, 2019, 9 p.m. | 114.1 ppb (103) | 64.3 ppb (61) | N/A | 50.0 ppb (46) | N/A | N/A | N/A | N/A | N/A | N/A | 103.0 | |
| Jan. 11, 2019, 8 p.m. | 135.7 ppb (107) | 86.6 ppb (85) | N/A | 49.0 ppb (45) | N/A | N/A | N/A | N/A | N/A | N/A | 107.0 | |
| Jan. 11, 2019, 7 p.m. | 152.9 ppb (110) | 103.2 ppb (100) | N/A | 50.0 ppb (46) | N/A | N/A | N/A | N/A | N/A | N/A | 110.0 | |
| Jan. 11, 2019, 6 p.m. | 95.0 ppb (94) | 58.1 ppb (54) | N/A | 37.0 ppb (34) | N/A | N/A | N/A | N/A | N/A | N/A | 94.0 | |
| Jan. 11, 2019, 5 p.m. | 109.9 ppb (102) | 72.9 ppb (70) | N/A | 37.0 ppb (34) | N/A | N/A | N/A | N/A | N/A | N/A | 102.0 | |
| Jan. 11, 2019, 4 p.m. | 134.0 ppb (106) | 93.7 ppb (92) | N/A | 40.0 ppb (37) | N/A | N/A | N/A | N/A | N/A | N/A | 106.0 | |
| Jan. 11, 2019, 3 p.m. | 135.8 ppb (107) | 95.3 ppb (94) | N/A | 40.0 ppb (37) | N/A | N/A | N/A | N/A | N/A | N/A | 107.0 | |
| Jan. 11, 2019, 2 p.m. | 94.9 ppb (94) | 59.5 ppb (56) | N/A | 35.0 ppb (32) | N/A | N/A | N/A | N/A | N/A | N/A | 94.0 | |
| Jan. 11, 2019, 1 p.m. | 122.5 ppb (104) | 84.7 ppb (83) | N/A | 38.0 ppb (35) | N/A | N/A | N/A | N/A | N/A | N/A | 104.0 | |
| Jan. 11, 2019, noon | 101.9 ppb (100) | 64.6 ppb (61) | N/A | 37.0 ppb (34) | N/A | N/A | N/A | N/A | N/A | N/A | 100.0 | |
| Jan. 11, 2019, 11 a.m. | 64.7 ppb (61) | 29.8 ppb (28) | N/A | 35.0 ppb (32) | N/A | N/A | N/A | N/A | N/A | N/A | 61.0 | |
| Jan. 11, 2019, 10 a.m. | 46.2 ppb (43) | 13.4 ppb (12) | N/A | 33.0 ppb (31) | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 | |
| Jan. 11, 2019, 9 a.m. | 45.4 ppb (42) | 16.7 ppb (15) | N/A | 29.0 ppb (27) | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 |