AQSQID: 081230009

Site Name: Greeley - Weld Co. Tower - 3101 35th Ave.

Location: Evans, CO

Reporting: True, Located: True

Current AQI: 20.0

Evans CO, US: 40.3861, -104.7367

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
May 23, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) 0.1 ppb (1) N/A N/A 20.0
 
May 23, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) 0.1 ppb (1) N/A N/A 21.0
 
May 23, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) 0.1 ppb (1) N/A N/A 25.0
 
May 23, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) 0.1 ppb (1) N/A N/A 25.0
 
May 23, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) 0.1 ppb (1) N/A N/A 25.0
 
May 23, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) 0.1 ppb (1) N/A N/A 25.0
 
May 23, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) 0.2 ppb (2) N/A N/A 26.0
 
May 23, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) 0.1 ppb (1) N/A N/A 27.0
 
May 23, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) 0.2 ppb (2) N/A N/A 28.0
 
May 23, 2019, midnight N/A N/A N/A N/A N/A N/A 38.0 ppb (29) 0.1 ppb (1) N/A N/A 29.0
 
May 22, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) 0.1 ppb (1) N/A N/A 31.0
 
May 22, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) 0.1 ppb (1) N/A N/A 31.0
 
May 22, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) 0.1 ppb (1) N/A N/A 32.0
 
May 22, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) 0.1 ppb (1) N/A N/A 32.0
 
May 22, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) 0.1 ppb (1) N/A N/A 30.0
 
May 22, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) 0.1 ppb (1) N/A N/A 26.0
 
May 22, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) 0.1 ppb (1) N/A N/A 25.0
 
May 22, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) 0.1 ppb (1) N/A N/A 23.0
 
May 22, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) 0.1 ppb (1) N/A N/A 22.0
 
May 22, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) 0.1 ppb (1) N/A N/A 22.0
 
May 22, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) 0.1 ppb (1) N/A N/A 19.0
 
May 22, 2019, noon N/A N/A N/A N/A N/A N/A 18.0 ppb (14) 0.2 ppb (2) N/A N/A 14.0
 
May 22, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) 0.2 ppb (2) N/A N/A 12.0
 
May 22, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) 0.1 ppb (1) N/A N/A 17.0
 
May 22, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) 0.1 ppb (1) N/A N/A 16.0
 
May 22, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) 0.1 ppb (1) N/A N/A 18.0
 
May 22, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) 0.1 ppb (1) N/A N/A 23.0
 
May 22, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) 0.0 ppb (0) N/A N/A 25.0
 
May 22, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) 0.1 ppb (1) N/A N/A 25.0
 
May 22, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) 0.0 ppb (0) N/A N/A 27.0
 
May 22, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) 0.1 ppb (1) N/A N/A 27.0
 
May 22, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) 0.1 ppb (1) N/A N/A 27.0
 
May 22, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) 0.1 ppb (1) N/A N/A 27.0
 
May 22, 2019, midnight N/A N/A N/A N/A N/A N/A 36.0 ppb (28) 0.1 ppb (1) N/A N/A 28.0
 
May 21, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) 0.1 ppb (1) N/A N/A 27.0
 
May 21, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) 0.1 ppb (1) N/A N/A 28.0
 
May 21, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) 0.1 ppb (1) N/A N/A 28.0
 
May 21, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) 0.1 ppb (1) N/A N/A 28.0
 
May 21, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) 0.1 ppb (1) N/A N/A 27.0
 
May 21, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) 0.1 ppb (1) N/A N/A 26.0
 
May 21, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) 0.1 ppb (1) N/A N/A 24.0
 
May 21, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) 0.1 ppb (1) N/A N/A 20.0
 
May 21, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) 0.1 ppb (1) N/A N/A 18.0
 
May 21, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) 0.1 ppb (1) N/A N/A 15.0
 
May 21, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) 0.1 ppb (1) N/A N/A 14.0
 
May 21, 2019, noon N/A N/A N/A N/A N/A N/A 16.0 ppb (12) 0.1 ppb (1) N/A N/A 12.0
 
May 21, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) 0.1 ppb (1) N/A N/A 11.0
 
May 21, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) 0.1 ppb (1) N/A N/A 10.0
 
May 21, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (8) 0.1 ppb (1) N/A N/A 8.0
 
May 21, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (7) 0.1 ppb (1) N/A N/A 7.0
 
May 21, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (7) 0.1 ppb (1) N/A N/A 7.0
 
May 21, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (7) 0.1 ppb (1) N/A N/A 7.0
 
May 21, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (6) 0.1 ppb (1) N/A N/A 6.0
 
May 21, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (8) 0.1 ppb (1) N/A N/A 8.0
 
May 21, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (8) 0.1 ppb (1) N/A N/A 8.0
 
May 21, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (7) 0.2 ppb (2) N/A N/A 7.0
 
May 21, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) 0.1 ppb (1) N/A N/A 12.0
 
May 21, 2019, midnight N/A N/A N/A N/A N/A N/A 15.0 ppb (12) 0.1 ppb (1) N/A N/A 12.0
 
May 20, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) 0.1 ppb (1) N/A N/A 12.0
 
May 20, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) 0.2 ppb (2) N/A N/A 12.0
 
May 20, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) 0.2 ppb (2) N/A N/A 13.0
 
May 20, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) 0.1 ppb (1) N/A N/A 12.0
 
May 20, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) 0.1 ppb (1) N/A N/A 12.0
 
May 20, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) 0.1 ppb (1) N/A N/A 13.0
 
May 20, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) 0.1 ppb (1) N/A N/A 14.0
 
May 20, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) 0.1 ppb (1) N/A N/A 14.0
 
May 20, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) 0.2 ppb (2) N/A N/A 15.0
 
May 20, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) 0.1 ppb (1) N/A N/A 16.0
 
May 20, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) 0.1 ppb (1) N/A N/A 17.0
 
May 20, 2019, noon N/A N/A N/A N/A N/A N/A 22.0 ppb (17) 0.1 ppb (1) N/A N/A 17.0
 
May 20, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) 0.1 ppb (1) N/A N/A 17.0
 
May 20, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) 0.1 ppb (1) N/A N/A 18.0
 
May 20, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) 0.1 ppb (1) N/A N/A 18.0
 
May 20, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) 0.2 ppb (2) N/A N/A 17.0
 
May 20, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) 0.1 ppb (1) N/A N/A 18.0
 
May 20, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) 0.1 ppb (1) N/A N/A 22.0
 
May 20, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) 0.1 ppb (1) N/A N/A 22.0
 
May 20, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) 0.1 ppb (1) N/A N/A 21.0
 
May 20, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) 0.3 ppb (3) N/A N/A 22.0
 
May 20, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) 0.1 ppb (1) N/A N/A 24.0
 
May 20, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) 0.1 ppb (1) N/A N/A 26.0
 
May 20, 2019, midnight N/A N/A N/A N/A N/A N/A 34.0 ppb (26) 0.2 ppb (2) N/A N/A 26.0
 
May 19, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) 0.1 ppb (1) N/A N/A 30.0
 
May 19, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) 0.1 ppb (1) N/A N/A 32.0
 
May 19, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) 0.1 ppb (1) N/A N/A 32.0
 
May 19, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) 0.1 ppb (1) N/A N/A 30.0
 
May 19, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) 0.1 ppb (1) N/A N/A 27.0
 
May 19, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) 0.1 ppb (1) N/A N/A 24.0
 
May 19, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) 0.1 ppb (1) N/A N/A 22.0
 
May 19, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) 0.1 ppb (1) N/A N/A 22.0
 
May 19, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) 0.1 ppb (1) N/A N/A 22.0
 
May 19, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) 0.0 ppb (0) N/A N/A 21.0
 
May 19, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) 0.1 ppb (1) N/A N/A 20.0
 
May 19, 2019, noon N/A N/A N/A N/A N/A N/A 29.0 ppb (22) 0.0 ppb (0) N/A N/A 22.0
 
May 19, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) 0.0 ppb (0) N/A N/A 23.0
 
May 19, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) 0.1 ppb (1) N/A N/A 21.0
 
May 19, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) 0.1 ppb (1) N/A N/A 21.0
 
May 19, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) 0.2 ppb (2) N/A N/A 22.0
 
May 19, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) 0.1 ppb (1) N/A N/A 22.0
 
May 19, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) 0.1 ppb (1) N/A N/A 21.0
 
May 19, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) 0.1 ppb (1) N/A N/A 18.0
 
May 19, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) 0.1 ppb (1) N/A N/A 18.0
 
May 19, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) 0.1 ppb (1) N/A N/A 17.0
 
May 19, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) 0.1 ppb (1) N/A N/A 18.0
 
May 19, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) 0.1 ppb (1) N/A N/A 20.0
 
May 19, 2019, midnight N/A N/A N/A N/A N/A N/A 39.0 ppb (30) 0.1 ppb (1) N/A N/A 30.0
 
May 18, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) 0.1 ppb (1) N/A N/A 34.0
 
May 18, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) 0.1 ppb (1) N/A N/A 35.0
 
May 18, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) 0.1 ppb (1) N/A N/A 35.0
 
May 18, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) 0.1 ppb (1) N/A N/A 34.0
 
May 18, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) 0.1 ppb (1) N/A N/A 38.0
 
May 18, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) 0.1 ppb (1) N/A N/A 38.0
 
May 18, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) 0.1 ppb (1) N/A N/A 37.0
 
May 18, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) 0.1 ppb (1) N/A N/A 33.0
 
May 18, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) 0.2 ppb (2) N/A N/A 22.0
 
May 18, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) 0.2 ppb (2) N/A N/A 22.0
 
May 18, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) 0.2 ppb (2) N/A N/A 18.0
 
May 18, 2019, noon N/A N/A N/A N/A N/A N/A 14.0 ppb (11) 0.2 ppb (2) N/A N/A 11.0
 
May 18, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (8) 0.2 ppb (2) N/A N/A 8.0
 
May 18, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) 0.2 ppb (2) N/A N/A 12.0
 
May 18, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) 0.2 ppb (2) N/A N/A 14.0
 
May 18, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) 0.2 ppb (2) N/A N/A 17.0
 
May 18, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) 0.1 ppb (1) N/A N/A 21.0
 
May 18, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) 0.1 ppb (1) N/A N/A 22.0
 
May 18, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) 0.1 ppb (1) N/A N/A 21.0
 
May 18, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) 0.1 ppb (1) N/A N/A 28.0
 
May 18, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) 0.1 ppb (1) N/A N/A 35.0
 
May 18, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) 0.1 ppb (1) N/A N/A 40.0
 
May 18, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) 0.1 ppb (1) N/A N/A 35.0
 
May 18, 2019, midnight N/A N/A N/A N/A N/A N/A 46.0 ppb (35) 0.1 ppb (1) N/A N/A 35.0
 
May 17, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) 0.1 ppb (1) N/A N/A 36.0
 
May 17, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) 0.1 ppb (1) N/A N/A 36.0
 
May 17, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) 0.1 ppb (1) N/A N/A 32.0
 
May 17, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) 0.1 ppb (1) N/A N/A 32.0
 
May 17, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) 0.1 ppb (1) N/A N/A 38.0
 
May 17, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) 0.1 ppb (1) N/A N/A 39.0
 
May 17, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) 0.1 ppb (1) N/A N/A 34.0
 
May 17, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) 0.1 ppb (1) N/A N/A 31.0
 
May 17, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) 0.1 ppb (1) N/A N/A 25.0
 
May 17, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) 0.1 ppb (1) N/A N/A 21.0
 
May 17, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) 0.1 ppb (1) N/A N/A 17.0
 
May 17, 2019, noon N/A N/A N/A N/A N/A N/A 17.0 ppb (13) 0.1 ppb (1) N/A N/A 13.0
 
May 17, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) 0.1 ppb (1) N/A N/A 15.0
 
May 17, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) 0.1 ppb (1) N/A N/A 20.0
 
May 17, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) 0.1 ppb (1) N/A N/A 23.0
 
May 17, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) 0.1 ppb (1) N/A N/A 22.0
 
May 17, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) 0.1 ppb (1) N/A N/A 19.0
 
May 17, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) 0.1 ppb (1) N/A N/A 18.0
 
May 17, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) 0.1 ppb (1) N/A N/A 25.0
 
May 17, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) 0.1 ppb (1) N/A N/A 29.0
 
May 17, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) 0.3 ppb (3) N/A N/A 28.0
 
May 17, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) 0.3 ppb (3) N/A N/A 32.0
 
May 17, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) 0.3 ppb (3) N/A N/A 39.0
 
May 17, 2019, midnight N/A N/A N/A N/A N/A N/A 53.0 ppb (41) 0.2 ppb (2) N/A N/A 41.0
 
May 16, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (42) 0.2 ppb (2) N/A N/A 42.0
 
May 16, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 58.0 ppb (45) 0.2 ppb (2) N/A N/A 45.0
 
May 16, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 58.0 ppb (45) 0.1 ppb (1) N/A N/A 45.0
 
May 16, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 60.0 ppb (46) 0.1 ppb (1) N/A N/A 46.0
 
May 16, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 58.0 ppb (45) 0.1 ppb (1) N/A N/A 45.0
 
May 16, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) 0.1 ppb (1) N/A N/A 38.0
 
May 16, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) 0.1 ppb (1) N/A N/A 33.0
 
May 16, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) 0.1 ppb (1) N/A N/A 28.0
 
May 16, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) 0.2 ppb (2) N/A N/A 17.0
 
May 16, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) 0.2 ppb (2) N/A N/A 14.0
 
May 16, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) 0.1 ppb (1) N/A N/A 14.0
 
May 16, 2019, noon N/A N/A N/A N/A N/A N/A 16.0 ppb (12) 0.1 ppb (1) N/A N/A 12.0
 
May 16, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) 0.1 ppb (1) N/A N/A 14.0
 
May 16, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) 0.1 ppb (1) N/A N/A 22.0