None None, None: None, None
| Date Observed (UTC) | NOX | NO | NOY | NO2 | NO2Y | SO2 | OZONE | CO | PM10 | PM2.5 | AQI | AQI/500 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| May 24, 2019, midnight | 429.0 ppb (162) | 334.0 ppb (145) | N/A | 95.0 ppb (94) | N/A | 16.0 ppb (23) | N/A | N/A | N/A | N/A | 162.0 | |
| May 23, 2019, 10 p.m. | 366.0 ppb (151) | 304.0 ppb (139) | N/A | 62.0 ppb (59) | N/A | 2.0 ppb (3) | N/A | N/A | N/A | N/A | 151.0 | |
| May 23, 2019, 9 p.m. | 296.0 ppb (138) | 247.0 ppb (128) | N/A | 49.0 ppb (45) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 138.0 | |
| May 23, 2019, 8 p.m. | 391.0 ppb (155) | 338.0 ppb (146) | N/A | 53.0 ppb (49) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 155.0 | |
| May 23, 2019, 7 p.m. | 339.0 ppb (146) | 289.0 ppb (136) | N/A | 50.0 ppb (46) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 146.0 | |
| May 23, 2019, 6 p.m. | 293.0 ppb (137) | 245.0 ppb (128) | N/A | 48.0 ppb (44) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 137.0 | |
| May 23, 2019, 5 p.m. | 216.0 ppb (122) | 173.0 ppb (114) | N/A | 43.0 ppb (40) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 122.0 | |
| May 23, 2019, 4 p.m. | 275.0 ppb (133) | 230.0 ppb (125) | N/A | 45.0 ppb (42) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 133.0 | |
| May 23, 2019, 3 p.m. | 292.0 ppb (137) | 247.0 ppb (128) | N/A | 45.0 ppb (42) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 137.0 | |
| May 23, 2019, 1 p.m. | 36.0 ppb (33) | 12.0 ppb (11) | N/A | 24.0 ppb (22) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 33.0 | |
| May 23, 2019, noon | 10.0 ppb (9) | 0.0 ppb (0) | N/A | 10.0 ppb (9) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 9.0 | |
| May 23, 2019, 11 a.m. | 2.0 ppb (2) | 0.0 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 2.0 | |
| May 23, 2019, 10 a.m. | 2.0 ppb (2) | 0.0 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 2.0 | |
| May 23, 2019, 9 a.m. | 2.0 ppb (2) | 0.0 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 2.0 | |
| May 23, 2019, 8 a.m. | 2.0 ppb (2) | 0.0 ppb (0) | N/A | 2.0 ppb (2) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 2.0 | |
| May 23, 2019, 7 a.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 1.0 | |
| May 22, 2019, 11 p.m. | 499.0 ppb (174) | 439.0 ppb (163) | N/A | 60.0 ppb (56) | N/A | 3.0 ppb (4) | N/A | N/A | N/A | N/A | 174.0 | |
| May 22, 2019, 10 p.m. | 309.0 ppb (140) | 262.0 ppb (131) | N/A | 47.0 ppb (44) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 140.0 | |
| May 22, 2019, 9 p.m. | 212.0 ppb (121) | 177.0 ppb (115) | N/A | 35.0 ppb (32) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 121.0 | |
| May 22, 2019, 8 p.m. | 208.0 ppb (121) | 175.0 ppb (114) | N/A | 33.0 ppb (31) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 121.0 | |
| May 22, 2019, 7 p.m. | 141.0 ppb (108) | 109.0 ppb (102) | N/A | 32.0 ppb (30) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 108.0 | |
| May 22, 2019, 6 p.m. | 106.0 ppb (101) | 76.0 ppb (73) | N/A | 30.0 ppb (28) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 101.0 | |
| May 22, 2019, 5 p.m. | 132.0 ppb (106) | 102.0 ppb (100) | N/A | 30.0 ppb (28) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 106.0 | |
| May 22, 2019, 4 p.m. | 228.0 ppb (124) | 193.0 ppb (118) | N/A | 35.0 ppb (32) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 124.0 | |
| May 22, 2019, 3 p.m. | 224.0 ppb (124) | 189.0 ppb (117) | N/A | 35.0 ppb (32) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 124.0 | |
| May 22, 2019, 2 p.m. | 129.0 ppb (105) | 98.0 ppb (97) | N/A | 31.0 ppb (29) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 105.0 | |
| May 22, 2019, 1 p.m. | 22.0 ppb (20) | 6.0 ppb (6) | N/A | 16.0 ppb (15) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 20.0 | |
| May 22, 2019, noon | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 1.0 | |
| May 22, 2019, 11 a.m. | 2.0 ppb (2) | 0.0 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 2.0 | |
| May 22, 2019, 10 a.m. | 2.0 ppb (2) | 0.0 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 2.0 | |
| May 22, 2019, 9 a.m. | 2.0 ppb (2) | 0.0 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 2.0 | |
| May 22, 2019, 8 a.m. | 2.0 ppb (2) | 0.0 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 2.0 | |
| May 22, 2019, 7 a.m. | 2.0 ppb (2) | 0.0 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 2.0 | |
| May 22, 2019, 6 a.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 1.0 | |
| May 22, 2019, 5 a.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 1.0 | |
| May 22, 2019, 4 a.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 1.0 | |
| May 22, 2019, 3 a.m. | 2.0 ppb (2) | 0.0 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 2.0 | |
| May 22, 2019, 2 a.m. | 7.0 ppb (6) | 1.0 ppb (1) | N/A | N/A | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | 6.0 | |
| May 22, 2019, 1 a.m. | 56.0 ppb (52) | 17.0 ppb (16) | N/A | 39.0 ppb (36) | N/A | N/A | N/A | N/A | N/A | N/A | 52.0 | |
| May 22, 2019, midnight | 130.0 ppb (106) | 89.0 ppb (87) | N/A | 41.0 ppb (38) | N/A | N/A | N/A | N/A | N/A | N/A | 106.0 | |
| May 21, 2019, 11 p.m. | 58.0 ppb (54) | 40.0 ppb (37) | N/A | 18.0 ppb (17) | N/A | N/A | N/A | N/A | N/A | N/A | 54.0 | |
| May 21, 2019, 10 p.m. | 6.0 ppb (6) | 1.0 ppb (1) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | N/A | N/A | N/A | 6.0 | |
| May 21, 2019, 9 p.m. | 4.0 ppb (4) | 1.0 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 | |
| May 21, 2019, 8 p.m. | 2.0 ppb (2) | 0.0 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 | |
| May 21, 2019, 7 p.m. | 2.0 ppb (2) | 0.0 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 | |
| May 21, 2019, 6 p.m. | 4.0 ppb (4) | 0.0 ppb (0) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 | |
| May 21, 2019, 5 p.m. | 29.0 ppb (27) | 11.0 ppb (10) | N/A | 18.0 ppb (17) | N/A | N/A | N/A | N/A | N/A | N/A | 27.0 | |
| May 21, 2019, 3 p.m. | 151.0 ppb (110) | 125.0 ppb (105) | N/A | 26.0 ppb (24) | N/A | N/A | N/A | N/A | N/A | N/A | 110.0 | |
| May 21, 2019, 2 p.m. | 70.0 ppb (67) | 50.0 ppb (46) | N/A | 20.0 ppb (19) | N/A | N/A | N/A | N/A | N/A | N/A | 67.0 | |
| May 21, 2019, 1 p.m. | 22.0 ppb (20) | 7.0 ppb (6) | N/A | 15.0 ppb (14) | N/A | N/A | N/A | N/A | N/A | N/A | 20.0 | |
| May 21, 2019, noon | 3.0 ppb (3) | 0.0 ppb (0) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 | |
| May 21, 2019, 11 a.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 | |
| May 21, 2019, 10 a.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 | |
| May 21, 2019, 9 a.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 | |
| May 21, 2019, 8 a.m. | 2.0 ppb (2) | 0.0 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 | |
| May 21, 2019, 7 a.m. | 34.0 ppb (31) | 36.0 ppb (33) | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 33.0 | |
| May 21, 2019, 6 a.m. | 2.0 ppb (2) | 0.0 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 | |
| May 21, 2019, 5 a.m. | 2.0 ppb (2) | 0.0 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 | |
| May 21, 2019, 4 a.m. | 2.0 ppb (2) | 0.0 ppb (0) | N/A | 2.0 ppb (2) | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 | |
| May 20, 2019, 11 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | |
| May 20, 2019, 10 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | |
| May 20, 2019, 9 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | |
| May 20, 2019, 8 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | |
| May 20, 2019, 7 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | |
| May 20, 2019, 6 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | |
| May 20, 2019, 5 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | |
| May 20, 2019, 4 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | |
| May 20, 2019, 3 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | |
| May 20, 2019, 2 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | |
| May 20, 2019, 1 p.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | |
| May 20, 2019, noon | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | |
| May 20, 2019, 11 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | |
| May 20, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | |
| May 20, 2019, 9 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | |
| May 20, 2019, 8 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | |
| May 20, 2019, 7 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | |
| May 20, 2019, 6 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | |
| May 20, 2019, 5 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | |
| May 20, 2019, 4 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | |
| May 20, 2019, 3 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | |
| May 20, 2019, 2 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | |
| May 20, 2019, 1 a.m. | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | |
| May 20, 2019, midnight | 0.0 ppb (0) | 0.0 ppb (0) | N/A | 0.0 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | |
| May 19, 2019, 11 p.m. | 0.0 ppb (0) | 0.0 ppb (0) | N/A | 0.0 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | |
| May 19, 2019, 10 p.m. | 0.0 ppb (0) | 0.0 ppb (0) | N/A | 0.0 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | |
| May 19, 2019, 9 p.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 1.0 | |
| May 19, 2019, 8 p.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 1.0 | |
| May 19, 2019, 7 p.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 1.0 | |
| May 19, 2019, 6 p.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 1.0 | |
| May 19, 2019, 5 p.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 1.0 | |
| May 19, 2019, 3 p.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 1.0 | |
| May 19, 2019, 2 p.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 1.0 | |
| May 19, 2019, 1 p.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 1.0 | |
| May 19, 2019, noon | 0.0 ppb (0) | 0.0 ppb (0) | N/A | 0.0 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | |
| May 19, 2019, 11 a.m. | 0.0 ppb (0) | 0.0 ppb (0) | N/A | 0.0 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | |
| May 19, 2019, 10 a.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 1.0 | |
| May 19, 2019, 9 a.m. | 0.0 ppb (0) | 0.0 ppb (0) | N/A | 0.0 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | |
| May 19, 2019, 8 a.m. | 0.0 ppb (0) | 0.0 ppb (0) | N/A | 0.0 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | |
| May 19, 2019, 7 a.m. | 0.0 ppb (0) | 0.0 ppb (0) | N/A | 0.0 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | |
| May 19, 2019, 6 a.m. | 0.0 ppb (0) | 0.0 ppb (0) | N/A | 0.0 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | |
| May 19, 2019, 5 a.m. | 0.0 ppb (0) | 0.0 ppb (0) | N/A | 0.0 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | |
| May 19, 2019, 4 a.m. | 0.0 ppb (0) | 0.0 ppb (0) | N/A | 0.0 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | |
| May 19, 2019, 3 a.m. | 0.0 ppb (0) | 0.0 ppb (0) | N/A | 0.0 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | |
| May 19, 2019, 2 a.m. | 0.0 ppb (0) | 0.0 ppb (0) | N/A | 0.0 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | |
| May 19, 2019, 1 a.m. | 0.0 ppb (0) | 0.0 ppb (0) | N/A | 0.0 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | |
| May 19, 2019, midnight | 0.0 ppb (0) | 0.0 ppb (0) | N/A | 0.0 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | |
| May 18, 2019, 11 p.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 1.0 | |
| May 18, 2019, 10 p.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 1.0 | |
| May 18, 2019, 9 p.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 1.0 | |
| May 18, 2019, 8 p.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 1.0 | |
| May 18, 2019, 7 p.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 1.0 | |
| May 18, 2019, 6 p.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 1.0 | |
| May 18, 2019, 5 p.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 1.0 | |
| May 18, 2019, 3 p.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 1.0 | |
| May 18, 2019, 2 p.m. | 0.0 ppb (0) | 0.0 ppb (0) | N/A | 0.0 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | |
| May 18, 2019, 1 p.m. | 0.0 ppb (0) | 0.0 ppb (0) | N/A | 0.0 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | |
| May 18, 2019, noon | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 1.0 | |
| May 18, 2019, 11 a.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 1.0 | |
| May 18, 2019, 10 a.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 1.0 | |
| May 18, 2019, 9 a.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 1.0 | |
| May 18, 2019, 8 a.m. | 0.0 ppb (0) | 0.0 ppb (0) | N/A | 0.0 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | |
| May 18, 2019, 7 a.m. | 0.0 ppb (0) | 0.0 ppb (0) | N/A | 0.0 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | |
| May 18, 2019, 6 a.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 1.0 | |
| May 18, 2019, 5 a.m. | 0.0 ppb (0) | 0.0 ppb (0) | N/A | 0.0 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | |
| May 18, 2019, 4 a.m. | 0.0 ppb (0) | 0.0 ppb (0) | N/A | 0.0 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | |
| May 18, 2019, 3 a.m. | 0.0 ppb (0) | 0.0 ppb (0) | N/A | 0.0 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | |
| May 18, 2019, 2 a.m. | 0.0 ppb (0) | 0.0 ppb (0) | N/A | 0.0 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | N/A | |
| May 18, 2019, 1 a.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 1.0 | |
| May 18, 2019, midnight | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 1.0 | |
| May 17, 2019, 11 p.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 1.0 | |
| May 17, 2019, 10 p.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 1.0 | |
| May 17, 2019, 9 p.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 1.0 | |
| May 17, 2019, 8 p.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 1.0 | |
| May 17, 2019, 7 p.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 1.0 | |
| May 17, 2019, 6 p.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 1.0 | |
| May 17, 2019, 5 p.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 1.0 | |
| May 17, 2019, 4 p.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 1.0 | |
| May 17, 2019, 3 p.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 1.0 | |
| May 17, 2019, 2 p.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 1.0 | |
| May 17, 2019, 1 p.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 1.0 | |
| May 17, 2019, noon | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 1.0 | |
| May 17, 2019, 11 a.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 1.0 | |
| May 17, 2019, 10 a.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 1.0 | |
| May 17, 2019, 9 a.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 1.0 | |
| May 17, 2019, 8 a.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 1.0 | |
| May 17, 2019, 7 a.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 1.0 | |
| May 17, 2019, 6 a.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 1.0 | |
| May 17, 2019, 5 a.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 1.0 | |
| May 17, 2019, 4 a.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 1.0 | |
| May 17, 2019, 3 a.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 1.0 | |
| May 17, 2019, 2 a.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 1.0 | |
| May 17, 2019, 1 a.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 1.0 | |
| May 17, 2019, midnight | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 1.0 | |
| May 16, 2019, 11 p.m. | 4.0 ppb (4) | 1.0 ppb (1) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 4.0 | |
| May 16, 2019, 10 p.m. | 53.0 ppb (49) | 33.0 ppb (31) | N/A | 20.0 ppb (19) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 49.0 | |
| May 16, 2019, 9 p.m. | 27.0 ppb (25) | 15.0 ppb (14) | N/A | 12.0 ppb (11) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 25.0 | |
| May 16, 2019, 8 p.m. | 10.0 ppb (9) | 3.0 ppb (3) | N/A | 7.0 ppb (6) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 9.0 | |
| May 16, 2019, 7 p.m. | 5.0 ppb (5) | 1.0 ppb (1) | N/A | 4.0 ppb (4) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 5.0 | |
| May 16, 2019, 6 p.m. | 8.0 ppb (7) | 1.0 ppb (1) | N/A | 7.0 ppb (6) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 7.0 | |
| May 16, 2019, 5 p.m. | 14.0 ppb (13) | 2.0 ppb (2) | N/A | 12.0 ppb (11) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 13.0 | |
| May 16, 2019, 4 p.m. | 14.0 ppb (13) | 1.0 ppb (1) | N/A | 13.0 ppb (12) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 13.0 | |
| May 16, 2019, 3 p.m. | 28.0 ppb (26) | 8.0 ppb (7) | N/A | 20.0 ppb (19) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 26.0 | |
| May 16, 2019, 2 p.m. | 34.0 ppb (31) | 12.0 ppb (11) | N/A | 22.0 ppb (20) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 31.0 | |
| May 16, 2019, 1 p.m. | 9.0 ppb (8) | 0.0 ppb (0) | N/A | 9.0 ppb (8) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 8.0 | |
| May 16, 2019, noon | 2.0 ppb (2) | 0.0 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 2.0 | |
| May 16, 2019, 11 a.m. | 3.0 ppb (3) | 0.0 ppb (0) | N/A | 3.0 ppb (3) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 3.0 | |
| May 16, 2019, 10 a.m. | 2.0 ppb (2) | 0.0 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 2.0 | |
| May 16, 2019, 9 a.m. | 2.0 ppb (2) | 0.0 ppb (0) | N/A | 2.0 ppb (2) | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | 2.0 |