ID: 2877

AQSQID: 471050109

Site Name: Loudonms

Added: April 21, 2020, 6:24 p.m.

Updated: Sept. 25, 2021, 8:59 a.m.

Location: Loudon (Roberts Rd), TN

Reporting: True, Located: True

Current AQI: 25.0

Loudon (Roberts Rd) TN, US: 35.7197, -84.3417

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Sept. 25, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 25, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (3) N/A N/A 4.0 μg/m3 (17) 17.0
 
Sept. 25, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (4) N/A N/A 2.0 μg/m3 (9) 9.0
 
Sept. 25, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 25, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (7) N/A N/A 3.0 μg/m3 (13) 13.0
 
Sept. 25, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (9) N/A N/A 4.0 μg/m3 (17) 17.0
 
Sept. 25, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (11) N/A N/A 3.0 μg/m3 (13) 13.0
 
Sept. 25, 2021, midnight N/A N/A N/A N/A N/A N/A 14.0 ppb (13) N/A N/A -2.0 μg/m3 (0) 13.0
 
Sept. 24, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A N/A 1.0 μg/m3 (5) 24.0
 
Sept. 24, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A N/A 3.0 μg/m3 (13) 42.0
 
Sept. 24, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (50) N/A N/A 9.0 μg/m3 (38) 50.0
 
Sept. 24, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (49) N/A N/A 5.0 μg/m3 (21) 49.0
 
Sept. 24, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A N/A 6.0 μg/m3 (25) 47.0
 
Sept. 24, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A N/A 4.0 μg/m3 (17) 43.0
 
Sept. 24, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A 1.0 μg/m3 (5) 38.0
 
Sept. 24, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A N/A 8.0 μg/m3 (34) 34.0
 
Sept. 24, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A N/A 7.0 μg/m3 (30) 30.0
 
Sept. 24, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (10) N/A N/A 16.0 μg/m3 (60) 60.0
 
Sept. 24, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (6) N/A N/A 11.0 μg/m3 (46) 46.0
 
Sept. 24, 2021, noon N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A N/A 9.0 μg/m3 (38) 38.0
 
Sept. 24, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 9.0 μg/m3 (38) 38.0
 
Sept. 24, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 7.0 μg/m3 (30) 30.0
 
Sept. 24, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 2.0 μg/m3 (9) 9.0
 
Sept. 24, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 0.0 μg/m3 (0) 1.0
 
Sept. 24, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A N/A 2.0 μg/m3 (9) 9.0
 
Sept. 24, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (3) N/A N/A 3.0 μg/m3 (13) 13.0
 
Sept. 24, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (3) N/A N/A 4.0 μg/m3 (17) 17.0
 
Sept. 24, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 3.0 μg/m3 (13) 13.0
 
Sept. 24, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (5) N/A N/A 2.0 μg/m3 (9) 9.0
 
Sept. 24, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (6) N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 24, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (8) N/A N/A -3.0 μg/m3 (0) 8.0
 
Sept. 24, 2021, midnight N/A N/A N/A N/A N/A N/A 10.0 ppb (10) N/A N/A 1.0 μg/m3 (5) 10.0
 
Sept. 23, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A N/A -1.0 μg/m3 (0) 18.0
 
Sept. 23, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A N/A 0.0 μg/m3 (0) 31.0
 
Sept. 23, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A N/A 7.0 μg/m3 (30) 34.0
 
Sept. 23, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A N/A 6.0 μg/m3 (25) 34.0
 
Sept. 23, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A N/A 5.0 μg/m3 (21) 33.0
 
Sept. 23, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A N/A 6.0 μg/m3 (25) 32.0
 
Sept. 23, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A N/A 4.0 μg/m3 (17) 32.0
 
Sept. 23, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A N/A 8.0 μg/m3 (34) 34.0
 
Sept. 23, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A N/A 7.0 μg/m3 (30) 32.0
 
Sept. 23, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A N/A 9.0 μg/m3 (38) 38.0
 
Sept. 23, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A N/A 10.0 μg/m3 (42) 42.0
 
Sept. 23, 2021, noon N/A N/A N/A N/A N/A N/A 12.0 ppb (12) N/A N/A 12.0 μg/m3 (50) 50.0
 
Sept. 23, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (5) N/A N/A 13.0 μg/m3 (53) 53.0
 
Sept. 23, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (10) N/A N/A -2.0 μg/m3 (0) 10.0
 
Sept. 23, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (13) N/A N/A 2.0 μg/m3 (9) 13.0
 
Sept. 23, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (17) N/A N/A 2.0 μg/m3 (9) 17.0
 
Sept. 23, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A N/A N/A 22.0
 
Sept. 23, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A N/A 2.0 μg/m3 (9) 25.0
 
Sept. 23, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A N/A 0.0 μg/m3 (0) 27.0
 
Sept. 23, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Sept. 23, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A N/A -2.0 μg/m3 (0) 29.0
 
Sept. 23, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A N/A 3.0 μg/m3 (13) 29.0
 
Sept. 23, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A N/A 2.0 μg/m3 (9) 32.0
 
Sept. 23, 2021, midnight N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A N/A 2.0 μg/m3 (9) 31.0
 
Sept. 22, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A N/A 2.0 μg/m3 (9) 32.0
 
Sept. 22, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A N/A -1.0 μg/m3 (0) 30.0
 
Sept. 22, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A N/A 6.0 μg/m3 (25) 32.0
 
Sept. 22, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A 5.0 μg/m3 (21) 37.0
 
Sept. 22, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A N/A 2.0 μg/m3 (9) 39.0
 
Sept. 22, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A N/A 7.0 μg/m3 (30) 41.0
 
Sept. 22, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A N/A 2.0 μg/m3 (9) 35.0
 
Sept. 22, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A N/A -2.0 μg/m3 (0) 35.0
 
Sept. 22, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A N/A 2.0 μg/m3 (9) 35.0
 
Sept. 22, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A N/A -2.0 μg/m3 (0) 34.0
 
Sept. 22, 2021, noon N/A N/A N/A N/A N/A N/A 5.0 ppb (5) N/A N/A 4.0 μg/m3 (17) 17.0
 
Sept. 22, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (6) N/A N/A 1.0 μg/m3 (5) 6.0
 
Sept. 22, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (7) N/A N/A 0.0 μg/m3 (0) 7.0
 
Sept. 22, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (9) N/A N/A 1.0 μg/m3 (5) 9.0
 
Sept. 22, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (9) N/A N/A -2.0 μg/m3 (0) 9.0
 
Sept. 22, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 1.0 μg/m3 (5) 5.0
 
Sept. 22, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 4.0 μg/m3 (17) 17.0
 
Sept. 22, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 2.0 μg/m3 (9) 9.0
 
Sept. 22, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 3.0 μg/m3 (13) 13.0
 
Sept. 22, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 22, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 22, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 22, 2021, midnight N/A N/A N/A N/A N/A N/A 5.0 ppb (5) N/A N/A 3.0 μg/m3 (13) 13.0
 
Sept. 21, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) N/A N/A 3.0 μg/m3 (13) 13.0
 
Sept. 21, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A N/A 6.0 μg/m3 (25) 30.0
 
Sept. 21, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 12.0 μg/m3 (50) 50.0
 
Sept. 21, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 0.0 μg/m3 (0) 0.0
Sept. 21, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A 12.0 μg/m3 (50) 50.0
 
Sept. 21, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A N/A 4.0 μg/m3 (17) 38.0
 
Sept. 21, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A N/A 11.0 μg/m3 (46) 46.0
 
Sept. 21, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A N/A 6.0 μg/m3 (25) 35.0
 
Sept. 21, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A N/A 10.0 μg/m3 (42) 42.0
 
Sept. 21, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 21, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 21, 2021, noon N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 21, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (14) N/A N/A 9.0 μg/m3 (38) 38.0
 
Sept. 21, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (8) N/A N/A 8.0 μg/m3 (34) 34.0
 
Sept. 21, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (10) N/A N/A 7.0 μg/m3 (30) 30.0
 
Sept. 21, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (9) N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 21, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (5) N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 21, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (7) N/A N/A 7.0 μg/m3 (30) 30.0
 
Sept. 21, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (7) N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 21, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Sept. 21, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (14) N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 21, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 21, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A N/A 4.0 μg/m3 (17) 20.0
 
Sept. 21, 2021, midnight N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 20, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 20, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A N/A 19.0 μg/m3 (66) 66.0
 
Sept. 20, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A N/A 0.0 μg/m3 (0) 27.0
 
Sept. 20, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A N/A 10.0 μg/m3 (42) 42.0
 
Sept. 20, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A N/A 27.0 μg/m3 (83) 83.0
 
Sept. 20, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 20, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A N/A N/A 18.0
 
Sept. 20, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A N/A 0.0 μg/m3 (0) 19.0
 
Sept. 20, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A N/A 0.0 μg/m3 (0) 24.0
 
Sept. 20, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (17) N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 20, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A N/A 3.0 μg/m3 (13) 13.0
 
Sept. 20, 2021, noon N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 1.0
 
Sept. 20, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 1.0
 
Sept. 20, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 1.0
 
Sept. 20, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 0.0
Sept. 20, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 1.0
 
Sept. 20, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 1.0
 
Sept. 20, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 1.0
 
Sept. 20, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 1.0
 
Sept. 20, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (6) N/A N/A N/A 6.0
 
Sept. 20, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 3.0
 
Sept. 20, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (7) N/A N/A N/A 7.0
 
Sept. 20, 2021, midnight N/A N/A N/A N/A N/A N/A 7.0 ppb (7) N/A N/A N/A 7.0
 
Sept. 19, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 5.0
 
Sept. 19, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (9) N/A N/A N/A 9.0
 
Sept. 19, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A N/A N/A 18.0
 
Sept. 19, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A N/A N/A 19.0
 
Sept. 19, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (13) N/A N/A N/A 13.0
 
Sept. 19, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (12) N/A N/A N/A 12.0
 
Sept. 19, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (16) N/A N/A N/A 16.0
 
Sept. 19, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (14) N/A N/A N/A 14.0
 
Sept. 19, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) N/A N/A N/A 13.0
 
Sept. 19, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (10) N/A N/A N/A 10.0
 
Sept. 19, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (8) N/A N/A N/A 8.0
 
Sept. 19, 2021, noon N/A N/A N/A N/A N/A N/A 6.0 ppb (6) N/A N/A N/A 6.0
 
Sept. 19, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 2.0
 
Sept. 19, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 1.0
 
Sept. 19, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 2.0
 
Sept. 19, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 2.0
 
Sept. 19, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 1.0
 
Sept. 19, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 1.0
 
Sept. 19, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 2.0
 
Sept. 19, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 5.0
 
Sept. 19, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 3.0
 
Sept. 19, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 5.0
 
Sept. 19, 2021, midnight N/A N/A N/A N/A N/A N/A 6.0 ppb (6) N/A N/A N/A 6.0
 
Sept. 18, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (13) N/A N/A N/A 13.0
 
Sept. 18, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (12) N/A N/A N/A 12.0
 
Sept. 18, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A N/A N/A 18.0
 
Sept. 18, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A N/A N/A 23.0
 
Sept. 18, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A N/A N/A 18.0
 
Sept. 18, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (14) N/A N/A N/A 14.0
 
Sept. 18, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (14) N/A N/A N/A 14.0
 
Sept. 18, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (16) N/A N/A N/A 16.0
 
Sept. 18, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) N/A N/A N/A 13.0
 
Sept. 18, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (7) N/A N/A N/A 7.0
 
Sept. 18, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 3.0
 
Sept. 18, 2021, noon N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 1.0
 
Sept. 18, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 0.0
Sept. 18, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 0.0
Sept. 18, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 0.0
Sept. 18, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 1.0
 
Sept. 18, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 1.0
 
Sept. 18, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 1.0
 
Sept. 18, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 1.0