Ontario CA, US: 34.0309, -117.617403
| Date Observed (UTC) | NOX | NO | NOY | NO2 | NO2Y | SO2 | OZONE | CO | PM10 | PM2.5 | AQI | AQI/500 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| March 20, 2019, 8 p.m. | 12.0 ppb (11) | 1.6 ppb (1) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 | |
| March 20, 2019, 7 p.m. | 44.0 ppb (41) | 19.5 ppb (18) | N/A | 24.0 ppb (22) | N/A | N/A | N/A | N/A | N/A | N/A | 41.0 | |
| March 20, 2019, 6 p.m. | 62.1 ppb (59) | 30.4 ppb (28) | N/A | 32.0 ppb (30) | N/A | N/A | N/A | N/A | N/A | N/A | 59.0 | |
| March 20, 2019, 5 p.m. | 71.4 ppb (69) | 38.4 ppb (36) | N/A | 33.0 ppb (31) | N/A | N/A | N/A | N/A | N/A | N/A | 69.0 | |
| March 20, 2019, 4 p.m. | 106.2 ppb (101) | 64.1 ppb (61) | N/A | 42.0 ppb (39) | N/A | N/A | N/A | N/A | N/A | N/A | 101.0 | |
| March 20, 2019, 3 p.m. | 124.0 ppb (104) | 78.6 ppb (76) | N/A | 45.0 ppb (42) | N/A | N/A | N/A | N/A | N/A | N/A | 104.0 | |
| March 20, 2019, 2 p.m. | 35.4 ppb (33) | 10.3 ppb (10) | N/A | 25.0 ppb (23) | N/A | N/A | N/A | N/A | N/A | N/A | 33.0 | |
| March 20, 2019, 1 p.m. | 39.8 ppb (37) | 14.9 ppb (14) | N/A | 25.0 ppb (23) | N/A | N/A | N/A | N/A | N/A | N/A | 37.0 | |
| March 20, 2019, noon | 94.8 ppb (93) | 56.0 ppb (52) | N/A | 39.0 ppb (36) | N/A | N/A | N/A | N/A | N/A | N/A | 93.0 | |
| March 20, 2019, 11 a.m. | 77.1 ppb (75) | 39.4 ppb (36) | N/A | 38.0 ppb (35) | N/A | N/A | N/A | N/A | N/A | N/A | 75.0 | |
| March 20, 2019, 10 a.m. | 40.2 ppb (37) | 13.1 ppb (12) | N/A | 27.0 ppb (25) | N/A | N/A | N/A | N/A | N/A | N/A | 37.0 | |
| March 20, 2019, 9 a.m. | 2.5 ppb (2) | -0.5 ppb (0) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 | |
| March 20, 2019, 8 a.m. | 9.5 ppb (9) | 1.1 ppb (1) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 | |
| March 20, 2019, 7 a.m. | 29.6 ppb (27) | 7.8 ppb (7) | N/A | 22.0 ppb (20) | N/A | N/A | N/A | N/A | N/A | N/A | 27.0 | |
| March 20, 2019, 6 a.m. | 25.2 ppb (23) | 6.2 ppb (6) | N/A | 19.0 ppb (18) | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 | |
| March 20, 2019, 5 a.m. | 29.3 ppb (27) | 8.8 ppb (8) | N/A | 20.0 ppb (19) | N/A | N/A | N/A | N/A | N/A | N/A | 27.0 | |
| March 20, 2019, 4 a.m. | 26.5 ppb (25) | 8.1 ppb (8) | N/A | 18.0 ppb (17) | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 | |
| March 20, 2019, 3 a.m. | 36.2 ppb (34) | 12.0 ppb (11) | N/A | 24.0 ppb (22) | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 | |
| March 20, 2019, 2 a.m. | 18.7 ppb (17) | 3.9 ppb (4) | N/A | 15.0 ppb (14) | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 | |
| March 20, 2019, 1 a.m. | 37.6 ppb (35) | 12.1 ppb (11) | N/A | 26.0 ppb (24) | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 | |
| March 20, 2019, midnight | 52.1 ppb (48) | 20.3 ppb (19) | N/A | 32.0 ppb (30) | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 | |
| March 19, 2019, 11 p.m. | 50.9 ppb (47) | 18.7 ppb (17) | N/A | 32.0 ppb (30) | N/A | N/A | N/A | N/A | N/A | N/A | 47.0 | |
| March 19, 2019, 10 p.m. | 51.5 ppb (48) | 18.9 ppb (18) | N/A | 33.0 ppb (31) | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 | |
| March 19, 2019, 9 p.m. | 50.6 ppb (47) | 19.2 ppb (18) | N/A | 31.0 ppb (29) | N/A | N/A | N/A | N/A | N/A | N/A | 47.0 | |
| March 19, 2019, 8 p.m. | 69.4 ppb (66) | 28.3 ppb (26) | N/A | 41.0 ppb (38) | N/A | N/A | N/A | N/A | N/A | N/A | 66.0 | |
| March 19, 2019, 7 p.m. | 81.2 ppb (79) | 35.1 ppb (32) | N/A | 46.0 ppb (43) | N/A | N/A | N/A | N/A | N/A | N/A | 79.0 | |
| March 19, 2019, 6 p.m. | 88.3 ppb (86) | 41.3 ppb (38) | N/A | 47.0 ppb (44) | N/A | N/A | N/A | N/A | N/A | N/A | 86.0 | |
| March 19, 2019, 5 p.m. | 100.9 ppb (100) | 51.1 ppb (47) | N/A | 50.0 ppb (46) | N/A | N/A | N/A | N/A | N/A | N/A | 100.0 | |
| March 19, 2019, 4 p.m. | 126.2 ppb (105) | 75.7 ppb (73) | N/A | 51.0 ppb (47) | N/A | N/A | N/A | N/A | N/A | N/A | 105.0 | |
| March 19, 2019, 3 p.m. | 83.7 ppb (82) | 43.7 ppb (40) | N/A | 40.0 ppb (37) | N/A | N/A | N/A | N/A | N/A | N/A | 82.0 | |
| March 19, 2019, 2 p.m. | 88.9 ppb (87) | 51.7 ppb (48) | N/A | 37.0 ppb (34) | N/A | N/A | N/A | N/A | N/A | N/A | 87.0 | |
| March 19, 2019, 1 p.m. | 116.1 ppb (103) | 76.6 ppb (74) | N/A | 40.0 ppb (37) | N/A | N/A | N/A | N/A | N/A | N/A | 103.0 | |
| March 19, 2019, noon | 142.7 ppb (108) | 96.8 ppb (96) | N/A | 46.0 ppb (43) | N/A | N/A | N/A | N/A | N/A | N/A | 108.0 | |
| March 19, 2019, 11 a.m. | 69.7 ppb (67) | 27.5 ppb (25) | N/A | 42.0 ppb (39) | N/A | N/A | N/A | N/A | N/A | N/A | 67.0 | |
| March 19, 2019, 10 a.m. | 81.4 ppb (79) | 32.5 ppb (30) | N/A | 49.0 ppb (45) | N/A | N/A | N/A | N/A | N/A | N/A | 79.0 | |
| March 19, 2019, 9 a.m. | 36.2 ppb (34) | 0.9 ppb (1) | N/A | 35.0 ppb (32) | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 | |
| March 19, 2019, 8 a.m. | 48.1 ppb (45) | 9.4 ppb (9) | N/A | 39.0 ppb (36) | N/A | N/A | N/A | N/A | N/A | N/A | 45.0 | |
| March 19, 2019, 7 a.m. | 56.0 ppb (52) | 16.3 ppb (15) | N/A | 40.0 ppb (37) | N/A | N/A | N/A | N/A | N/A | N/A | 52.0 | |
| March 19, 2019, 6 a.m. | 73.3 ppb (71) | 23.4 ppb (22) | N/A | 50.0 ppb (46) | N/A | N/A | N/A | N/A | N/A | N/A | 71.0 | |
| March 19, 2019, 5 a.m. | 50.2 ppb (46) | 11.1 ppb (10) | N/A | 39.0 ppb (36) | N/A | N/A | N/A | N/A | N/A | N/A | 46.0 | |
| March 19, 2019, 4 a.m. | 38.5 ppb (36) | 7.2 ppb (7) | N/A | 31.0 ppb (29) | N/A | N/A | N/A | N/A | N/A | N/A | 36.0 | |
| March 19, 2019, 3 a.m. | 59.3 ppb (56) | 16.6 ppb (15) | N/A | 43.0 ppb (40) | N/A | N/A | N/A | N/A | N/A | N/A | 56.0 | |
| March 19, 2019, 2 a.m. | 56.1 ppb (52) | 14.8 ppb (14) | N/A | 41.0 ppb (38) | N/A | N/A | N/A | N/A | N/A | N/A | 52.0 | |
| March 19, 2019, 1 a.m. | 57.5 ppb (54) | 16.7 ppb (15) | N/A | 41.0 ppb (38) | N/A | N/A | N/A | N/A | N/A | N/A | 54.0 | |
| March 19, 2019, midnight | 47.3 ppb (44) | 13.8 ppb (13) | N/A | 33.0 ppb (31) | N/A | N/A | N/A | N/A | N/A | N/A | 44.0 | |
| March 18, 2019, 11 p.m. | 56.3 ppb (52) | 20.2 ppb (19) | N/A | 36.0 ppb (33) | N/A | N/A | N/A | N/A | N/A | N/A | 52.0 | |
| March 18, 2019, 10 p.m. | 54.5 ppb (51) | 19.8 ppb (18) | N/A | 35.0 ppb (32) | N/A | N/A | N/A | N/A | N/A | N/A | 51.0 | |
| March 18, 2019, 9 p.m. | 64.2 ppb (61) | 24.1 ppb (22) | N/A | 40.0 ppb (37) | N/A | N/A | N/A | N/A | N/A | N/A | 61.0 | |
| March 18, 2019, 8 p.m. | 57.8 ppb (54) | 24.5 ppb (23) | N/A | 33.0 ppb (31) | N/A | N/A | N/A | N/A | N/A | N/A | 54.0 | |
| March 18, 2019, 7 p.m. | 68.8 ppb (66) | 29.2 ppb (27) | N/A | 40.0 ppb (37) | N/A | N/A | N/A | N/A | N/A | N/A | 66.0 | |
| March 18, 2019, 6 p.m. | 81.0 ppb (79) | 38.1 ppb (35) | N/A | 43.0 ppb (40) | N/A | N/A | N/A | N/A | N/A | N/A | 79.0 | |
| March 18, 2019, 5 p.m. | 89.9 ppb (88) | 46.5 ppb (43) | N/A | 43.0 ppb (40) | N/A | N/A | N/A | N/A | N/A | N/A | 88.0 | |
| March 18, 2019, 4 p.m. | 150.3 ppb (109) | 99.4 ppb (98) | N/A | 51.0 ppb (47) | N/A | N/A | N/A | N/A | N/A | N/A | 109.0 | |
| March 18, 2019, 3 p.m. | 220.7 ppb (123) | 165.8 ppb (112) | N/A | 55.0 ppb (51) | N/A | N/A | N/A | N/A | N/A | N/A | 123.0 | |
| March 18, 2019, 2 p.m. | 172.5 ppb (114) | 127.8 ppb (105) | N/A | 45.0 ppb (42) | N/A | N/A | N/A | N/A | N/A | N/A | 114.0 | |
| March 18, 2019, 1 p.m. | 130.0 ppb (106) | 84.6 ppb (83) | N/A | 45.0 ppb (42) | N/A | N/A | N/A | N/A | N/A | N/A | 106.0 | |
| March 18, 2019, noon | 118.1 ppb (103) | 75.5 ppb (73) | N/A | 43.0 ppb (40) | N/A | N/A | N/A | N/A | N/A | N/A | 103.0 | |
| March 18, 2019, 11 a.m. | 54.1 ppb (50) | 19.7 ppb (18) | N/A | 34.0 ppb (31) | N/A | N/A | N/A | N/A | N/A | N/A | 50.0 | |
| March 18, 2019, 10 a.m. | 22.0 ppb (20) | -0.1 ppb (0) | N/A | 22.0 ppb (20) | N/A | N/A | N/A | N/A | N/A | N/A | 20.0 | |
| March 18, 2019, 9 a.m. | 50.7 ppb (47) | 15.4 ppb (14) | N/A | 35.0 ppb (32) | N/A | N/A | N/A | N/A | N/A | N/A | 47.0 | |
| March 18, 2019, 8 a.m. | 45.7 ppb (42) | 9.5 ppb (9) | N/A | 36.0 ppb (33) | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 | |
| March 18, 2019, 7 a.m. | 67.3 ppb (64) | 21.0 ppb (19) | N/A | 46.0 ppb (43) | N/A | N/A | N/A | N/A | N/A | N/A | 64.0 | |
| March 18, 2019, 6 a.m. | 45.8 ppb (42) | 7.9 ppb (7) | N/A | 38.0 ppb (35) | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 | |
| March 18, 2019, 5 a.m. | 21.3 ppb (20) | -0.2 ppb (0) | N/A | 22.0 ppb (20) | N/A | N/A | N/A | N/A | N/A | N/A | 20.0 | |
| March 18, 2019, 4 a.m. | 35.3 ppb (33) | 6.8 ppb (6) | N/A | 29.0 ppb (27) | N/A | N/A | N/A | N/A | N/A | N/A | 33.0 | |
| March 18, 2019, 3 a.m. | 42.8 ppb (40) | 10.8 ppb (10) | N/A | 32.0 ppb (30) | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 | |
| March 18, 2019, 2 a.m. | 37.8 ppb (35) | 8.5 ppb (8) | N/A | 29.0 ppb (27) | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 | |
| March 18, 2019, 1 a.m. | 32.5 ppb (30) | 7.5 ppb (7) | N/A | 25.0 ppb (23) | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 | |
| March 18, 2019, midnight | 26.5 ppb (25) | 6.7 ppb (6) | N/A | 20.0 ppb (19) | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 | |
| March 17, 2019, 11 p.m. | 14.0 ppb (13) | 3.5 ppb (3) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | N/A | N/A | N/A | 13.0 | |
| March 17, 2019, 10 p.m. | 9.1 ppb (8) | 1.9 ppb (2) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | N/A | N/A | N/A | 8.0 | |
| March 17, 2019, 9 p.m. | 16.9 ppb (16) | 4.8 ppb (4) | N/A | 12.0 ppb (11) | N/A | N/A | N/A | N/A | N/A | N/A | 16.0 | |
| March 17, 2019, 8 p.m. | 21.3 ppb (20) | 6.8 ppb (6) | N/A | 15.0 ppb (14) | N/A | N/A | N/A | N/A | N/A | N/A | 20.0 | |
| March 17, 2019, 7 p.m. | 26.7 ppb (25) | 9.4 ppb (9) | N/A | 17.0 ppb (16) | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 | |
| March 17, 2019, 6 p.m. | 36.8 ppb (34) | 13.8 ppb (13) | N/A | 23.0 ppb (21) | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 | |
| March 17, 2019, 5 p.m. | 39.4 ppb (36) | 15.5 ppb (14) | N/A | 24.0 ppb (22) | N/A | N/A | N/A | N/A | N/A | N/A | 36.0 | |
| March 17, 2019, 4 p.m. | 53.8 ppb (50) | 24.6 ppb (23) | N/A | 29.0 ppb (27) | N/A | N/A | N/A | N/A | N/A | N/A | 50.0 | |
| March 17, 2019, 3 p.m. | 54.8 ppb (51) | 24.4 ppb (23) | N/A | 30.0 ppb (28) | N/A | N/A | N/A | N/A | N/A | N/A | 51.0 | |
| March 17, 2019, 2 p.m. | 40.1 ppb (37) | 11.8 ppb (11) | N/A | 28.0 ppb (26) | N/A | N/A | N/A | N/A | N/A | N/A | 37.0 | |
| March 17, 2019, 1 p.m. | 30.4 ppb (28) | 1.7 ppb (2) | N/A | 29.0 ppb (27) | N/A | N/A | N/A | N/A | N/A | N/A | 28.0 | |
| March 17, 2019, noon | 38.1 ppb (35) | 7.8 ppb (7) | N/A | 30.0 ppb (28) | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 | |
| March 17, 2019, 11 a.m. | 52.7 ppb (49) | 21.6 ppb (20) | N/A | 31.0 ppb (29) | N/A | N/A | N/A | N/A | N/A | N/A | 49.0 | |
| March 17, 2019, 10 a.m. | 32.0 ppb (30) | 2.8 ppb (3) | N/A | 29.0 ppb (27) | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 | |
| March 17, 2019, 9 a.m. | 20.5 ppb (19) | -0.4 ppb (0) | N/A | 21.0 ppb (19) | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 | |
| March 17, 2019, 8 a.m. | 18.7 ppb (17) | -0.2 ppb (0) | N/A | 19.0 ppb (18) | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 | |
| March 17, 2019, 7 a.m. | 32.3 ppb (30) | 5.8 ppb (5) | N/A | 26.0 ppb (24) | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 | |
| March 17, 2019, 6 a.m. | 32.9 ppb (30) | 7.2 ppb (7) | N/A | 26.0 ppb (24) | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 | |
| March 17, 2019, 5 a.m. | 38.4 ppb (36) | 7.7 ppb (7) | N/A | 31.0 ppb (29) | N/A | N/A | N/A | N/A | N/A | N/A | 36.0 | |
| March 17, 2019, 4 a.m. | 26.1 ppb (24) | 5.8 ppb (5) | N/A | 20.0 ppb (19) | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 | |
| March 17, 2019, 3 a.m. | 2.6 ppb (2) | -0.8 ppb (0) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 | |
| March 17, 2019, 2 a.m. | 1.6 ppb (1) | -0.8 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 | |
| March 17, 2019, 1 a.m. | 1.3 ppb (1) | -0.7 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 | |
| March 17, 2019, midnight | 0.6 ppb (1) | -0.7 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 | |
| March 16, 2019, 11 p.m. | 0.2 ppb (0) | -0.6 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 | |
| March 16, 2019, 10 p.m. | 0.0 ppb (0) | -0.6 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 | |
| March 16, 2019, 9 p.m. | 0.2 ppb (0) | -0.6 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 | |
| March 16, 2019, 8 p.m. | 0.8 ppb (1) | -0.4 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 | |
| March 16, 2019, 7 p.m. | 0.7 ppb (1) | -0.5 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 | |
| March 16, 2019, 6 p.m. | 1.5 ppb (1) | -0.4 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 | |
| March 16, 2019, 5 p.m. | 1.6 ppb (1) | -0.3 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 | |
| March 16, 2019, 4 p.m. | 2.1 ppb (2) | -0.3 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 | |
| March 16, 2019, 3 p.m. | 2.2 ppb (2) | -0.3 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 | |
| March 16, 2019, 2 p.m. | 3.7 ppb (3) | -0.5 ppb (0) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 | |
| March 16, 2019, 1 p.m. | 4.5 ppb (4) | -0.3 ppb (0) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 | |
| March 16, 2019, noon | 1.2 ppb (1) | -0.6 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 | |
| March 16, 2019, 11 a.m. | 19.1 ppb (18) | 3.7 ppb (3) | N/A | 15.0 ppb (14) | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 | |
| March 16, 2019, 10 a.m. | 32.1 ppb (30) | 6.5 ppb (6) | N/A | 26.0 ppb (24) | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 | |
| March 16, 2019, 9 a.m. | 39.0 ppb (36) | 6.3 ppb (6) | N/A | 33.0 ppb (31) | N/A | N/A | N/A | N/A | N/A | N/A | 36.0 | |
| March 16, 2019, 8 a.m. | 11.1 ppb (10) | -0.5 ppb (0) | N/A | 12.0 ppb (11) | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 | |
| March 16, 2019, 7 a.m. | 2.4 ppb (2) | -0.7 ppb (0) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 | |
| March 16, 2019, 6 a.m. | 4.6 ppb (4) | -0.6 ppb (0) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 | |
| March 16, 2019, 5 a.m. | 4.2 ppb (4) | -0.6 ppb (0) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 | |
| March 16, 2019, 4 a.m. | 3.8 ppb (4) | -0.6 ppb (0) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 | |
| March 16, 2019, 3 a.m. | 1.5 ppb (1) | -0.6 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 | |
| March 16, 2019, 2 a.m. | 2.7 ppb (3) | -0.6 ppb (0) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 | |
| March 16, 2019, 1 a.m. | 2.4 ppb (2) | -0.5 ppb (0) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 | |
| March 16, 2019, midnight | 3.0 ppb (3) | -0.3 ppb (0) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 | |
| March 15, 2019, 11 p.m. | 2.6 ppb (2) | -0.2 ppb (0) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 | |
| March 15, 2019, 10 p.m. | 2.8 ppb (3) | -0.1 ppb (0) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 | |
| March 15, 2019, 9 p.m. | 5.5 ppb (5) | 0.9 ppb (1) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 | |
| March 15, 2019, 8 p.m. | 4.4 ppb (4) | 0.8 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 | |
| March 15, 2019, 7 p.m. | 3.1 ppb (3) | 0.2 ppb (0) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 | |
| March 15, 2019, 6 p.m. | 3.5 ppb (3) | 0.3 ppb (0) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 | |
| March 15, 2019, 5 p.m. | 3.9 ppb (4) | 0.4 ppb (0) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 | |
| March 15, 2019, 4 p.m. | 4.5 ppb (4) | 0.4 ppb (0) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 | |
| March 15, 2019, 3 p.m. | 4.9 ppb (5) | 0.1 ppb (0) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 | |
| March 15, 2019, 2 p.m. | 6.8 ppb (6) | -0.3 ppb (0) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | N/A | N/A | N/A | 6.0 | |
| March 15, 2019, 1 p.m. | 6.1 ppb (6) | -0.6 ppb (0) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | N/A | N/A | N/A | 6.0 | |
| March 15, 2019, noon | 4.3 ppb (4) | -0.5 ppb (0) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 | |
| March 15, 2019, 11 a.m. | 3.1 ppb (3) | -0.7 ppb (0) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 | |
| March 15, 2019, 10 a.m. | 2.1 ppb (2) | -0.6 ppb (0) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 | |
| March 15, 2019, 9 a.m. | 1.9 ppb (2) | -0.7 ppb (0) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 | |
| March 15, 2019, 8 a.m. | 2.3 ppb (2) | -0.7 ppb (0) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 | |
| March 15, 2019, 7 a.m. | 1.8 ppb (2) | -0.6 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 | |
| March 15, 2019, 6 a.m. | 0.8 ppb (1) | -0.5 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 | |
| March 15, 2019, 5 a.m. | 2.5 ppb (2) | -0.6 ppb (0) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 | |
| March 15, 2019, 4 a.m. | 1.1 ppb (1) | -0.5 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 | |
| March 15, 2019, 3 a.m. | 1.9 ppb (2) | -0.5 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 | |
| March 15, 2019, 2 a.m. | 2.0 ppb (2) | -0.5 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 | |
| March 15, 2019, 1 a.m. | 3.2 ppb (3) | -0.1 ppb (0) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 | |
| March 15, 2019, midnight | 5.0 ppb (5) | 0.5 ppb (0) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 | |
| March 14, 2019, 11 p.m. | 5.4 ppb (5) | 0.8 ppb (1) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 | |
| March 14, 2019, 10 p.m. | 6.6 ppb (6) | 1.6 ppb (1) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | N/A | N/A | N/A | 6.0 | |
| March 14, 2019, 9 p.m. | 6.6 ppb (6) | 1.6 ppb (1) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | N/A | N/A | N/A | 6.0 | |
| March 14, 2019, 8 p.m. | 12.3 ppb (11) | 4.3 ppb (4) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 | |
| March 14, 2019, 7 p.m. | 15.9 ppb (15) | 5.6 ppb (5) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 | |
| March 14, 2019, 6 p.m. | 10.9 ppb (10) | 3.3 ppb (3) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 | |
| March 14, 2019, 5 p.m. | 22.5 ppb (21) | 7.1 ppb (7) | N/A | 15.0 ppb (14) | N/A | N/A | N/A | N/A | N/A | N/A | 21.0 | |
| March 14, 2019, 4 p.m. | 48.8 ppb (45) | 20.6 ppb (19) | N/A | 28.0 ppb (26) | N/A | N/A | N/A | N/A | N/A | N/A | 45.0 | |
| March 14, 2019, 3 p.m. | 122.6 ppb (104) | 77.0 ppb (74) | N/A | 46.0 ppb (43) | N/A | N/A | N/A | N/A | N/A | N/A | 104.0 | |
| March 14, 2019, 2 p.m. | 110.2 ppb (102) | 66.6 ppb (63) | N/A | 44.0 ppb (41) | N/A | N/A | N/A | N/A | N/A | N/A | 102.0 | |
| March 14, 2019, 1 p.m. | 86.8 ppb (85) | 45.6 ppb (42) | N/A | 41.0 ppb (38) | N/A | N/A | N/A | N/A | N/A | N/A | 85.0 | |
| March 14, 2019, noon | 61.8 ppb (58) | 22.8 ppb (21) | N/A | 39.0 ppb (36) | N/A | N/A | N/A | N/A | N/A | N/A | 58.0 | |
| March 14, 2019, 11 a.m. | 37.9 ppb (35) | 3.3 ppb (3) | N/A | 35.0 ppb (32) | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 | |
| March 14, 2019, 10 a.m. | 24.6 ppb (23) | 0.0 ppb (0) | N/A | 25.0 ppb (23) | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 | |
| March 14, 2019, 9 a.m. | 3.6 ppb (3) | -0.3 ppb (0) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 | |
| March 14, 2019, 8 a.m. | 3.9 ppb (4) | -0.3 ppb (0) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 | |
| March 14, 2019, 7 a.m. | 17.2 ppb (16) | 1.4 ppb (1) | N/A | 16.0 ppb (15) | N/A | N/A | N/A | N/A | N/A | N/A | 16.0 | |
| March 14, 2019, 6 a.m. | 56.7 ppb (53) | 17.5 ppb (16) | N/A | 39.0 ppb (36) | N/A | N/A | N/A | N/A | N/A | N/A | 53.0 | |
| March 14, 2019, 5 a.m. | 32.1 ppb (30) | 6.8 ppb (6) | N/A | 25.0 ppb (23) | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 | |
| March 14, 2019, 4 a.m. | 29.6 ppb (27) | 4.6 ppb (4) | N/A | 25.0 ppb (23) | N/A | N/A | N/A | N/A | N/A | N/A | 27.0 | |
| March 14, 2019, 3 a.m. | 57.2 ppb (53) | 17.6 ppb (16) | N/A | 40.0 ppb (37) | N/A | N/A | N/A | N/A | N/A | N/A | 53.0 | |
| March 14, 2019, 2 a.m. | 64.7 ppb (61) | 23.3 ppb (22) | N/A | 41.0 ppb (38) | N/A | N/A | N/A | N/A | N/A | N/A | 61.0 | |
| March 14, 2019, 1 a.m. | 51.2 ppb (47) | 17.1 ppb (16) | N/A | 34.0 ppb (31) | N/A | N/A | N/A | N/A | N/A | N/A | 47.0 | |
| March 14, 2019, midnight | 51.4 ppb (48) | 21.0 ppb (19) | N/A | 30.0 ppb (28) | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 | |
| March 13, 2019, 11 p.m. | 52.3 ppb (48) | 19.9 ppb (18) | N/A | 32.0 ppb (30) | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 | |
| March 13, 2019, 10 p.m. | 47.5 ppb (44) | 19.5 ppb (18) | N/A | 28.0 ppb (26) | N/A | N/A | N/A | N/A | N/A | N/A | 44.0 | |
| March 13, 2019, 9 p.m. | 49.8 ppb (46) | 22.2 ppb (21) | N/A | 28.0 ppb (26) | N/A | N/A | N/A | N/A | N/A | N/A | 46.0 |