AQSQID: 440071010

Site Name: E Providence

Location: E Providence, RI

Reporting: True, Located: True

Current AQI: 25.0

E Providence RI, US: 41.840302, -71.361702

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Sept. 16, 2019, 11 p.m. 4.3 ppb (4) -0.1 ppb (0) 3.7 ppb (3) 4.0 ppb (4) 3.6 ppb (3) 0.0 ppb (0) 32.0 ppb (25) 0.2 ppb (2) N/A N/A 25.0
 
Sept. 16, 2019, 10 p.m. 2.6 ppb (2) 0.0 ppb (0) 2.3 ppb (2) 3.0 ppb (3) 2.2 ppb (2) 0.0 ppb (0) 37.0 ppb (28) 0.17 ppb (2) N/A N/A 28.0
 
Sept. 16, 2019, 9 p.m. 1.3 ppb (1) 0.1 ppb (0) 1.1 ppb (1) 1.0 ppb (1) 0.9 ppb (1) 0.0 ppb (0) 40.0 ppb (31) 0.16 ppb (2) N/A N/A 31.0
 
Sept. 16, 2019, 8 p.m. 1.3 ppb (1) 0.1 ppb (0) 1.1 ppb (1) 1.0 ppb (1) 0.9 ppb (1) 0.0 ppb (0) 41.0 ppb (32) 0.15 ppb (2) N/A N/A 32.0
 
Sept. 16, 2019, 7 p.m. 1.3 ppb (1) 0.1 ppb (0) 1.2 ppb (1) 1.0 ppb (1) 1.0 ppb (1) 0.0 ppb (0) 41.0 ppb (32) 0.16 ppb (2) N/A N/A 32.0
 
Sept. 16, 2019, 6 p.m. 1.4 ppb (1) 0.1 ppb (0) 1.2 ppb (1) 1.0 ppb (1) 1.0 ppb (1) 0.0 ppb (0) 42.0 ppb (32) 0.16 ppb (2) N/A N/A 32.0
 
Sept. 16, 2019, 5 p.m. 1.6 ppb (1) 0.2 ppb (0) 1.5 ppb (1) 2.0 ppb (2) 1.2 ppb (1) 0.0 ppb (0) 39.0 ppb (30) 0.16 ppb (2) N/A N/A 30.0
 
Sept. 16, 2019, 4 p.m. N/A N/A 2.1 ppb (2) N/A 1.7 ppb (2) N/A 39.0 ppb (30) 0.61 ppb (7) N/A 3.0 μg/m3 (12) 30.0
 
Sept. 16, 2019, 3 p.m. N/A N/A 2.7 ppb (3) N/A 2.2 ppb (2) N/A 34.0 ppb (26) 0.08 ppb (1) N/A 6.0 μg/m3 (25) 26.0
 
Sept. 16, 2019, 2 p.m. 3.5 ppb (3) 0.8 ppb (1) 3.0 ppb (3) 3.0 ppb (3) 2.1 ppb (2) 0.0 ppb (0) 31.0 ppb (24) 0.16 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 16, 2019, 1 p.m. 4.5 ppb (4) 1.4 ppb (1) 4.0 ppb (4) 3.0 ppb (3) 2.8 ppb (3) 0.0 ppb (0) 27.0 ppb (21) 0.32 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 16, 2019, noon 6.8 ppb (6) 1.8 ppb (2) 6.0 ppb (6) 5.0 ppb (5) 4.3 ppb (4) 0.0 ppb (0) 23.0 ppb (18) 0.35 ppb (4) N/A 8.0 μg/m3 (33) 33.0
 
Sept. 16, 2019, 11 a.m. 12.9 ppb (12) 2.3 ppb (2) 11.8 ppb (11) 11.0 ppb (10) 9.7 ppb (9) 0.0 ppb (0) 16.0 ppb (12) 0.27 ppb (3) N/A 7.0 μg/m3 (29) 29.0
 
Sept. 16, 2019, 10 a.m. 8.0 ppb (7) 0.3 ppb (0) 7.3 ppb (7) 8.0 ppb (7) 7.0 ppb (6) 0.0 ppb (0) 20.0 ppb (15) 0.22 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
Sept. 16, 2019, 9 a.m. 4.7 ppb (4) 0.1 ppb (0) 4.1 ppb (4) 5.0 ppb (5) 4.0 ppb (4) 0.0 ppb (0) 23.0 ppb (18) 0.18 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 16, 2019, 8 a.m. 9.0 ppb (8) 0.2 ppb (0) 8.0 ppb (7) 9.0 ppb (8) 7.9 ppb (7) 0.0 ppb (0) 16.0 ppb (12) 0.2 ppb (2) N/A 10.0 μg/m3 (42) 42.0
 
Sept. 16, 2019, 7 a.m. 10.1 ppb (9) 0.5 ppb (0) 9.5 ppb (9) 10.0 ppb (9) 9.2 ppb (9) 0.0 ppb (0) 6.0 ppb (5) 0.24 ppb (3) N/A 10.0 μg/m3 (42) 42.0
 
Sept. 16, 2019, 6 a.m. N/A N/A 8.9 ppb (8) N/A 8.8 ppb (8) N/A 10.0 ppb (8) N/A N/A 8.0 μg/m3 (33) 33.0
 
Sept. 16, 2019, 5 a.m. N/A N/A 9.9 ppb (9) N/A 9.7 ppb (9) N/A 9.0 ppb (7) N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 16, 2019, 3 a.m. 13.4 ppb (12) 0.5 ppb (0) 10.7 ppb (10) 13.0 ppb (12) 10.6 ppb (10) 0.0 ppb (0) 11.0 ppb (8) 0.31 ppb (3) N/A 8.0 μg/m3 (33) 33.0
 
Sept. 16, 2019, 2 a.m. 13.6 ppb (13) 0.3 ppb (0) 10.8 ppb (10) 13.0 ppb (12) 10.6 ppb (10) 0.0 ppb (0) 13.0 ppb (10) 0.31 ppb (3) N/A 11.0 μg/m3 (46) 46.0
 
Sept. 16, 2019, 1 a.m. 10.0 ppb (9) 0.1 ppb (0) 8.6 ppb (8) 10.0 ppb (9) 8.5 ppb (8) 0.0 ppb (0) 24.0 ppb (18) 0.29 ppb (3) N/A 13.0 μg/m3 (52) 52.0
 
Sept. 16, 2019, midnight 6.8 ppb (6) 0.1 ppb (0) 6.3 ppb (6) 7.0 ppb (6) 6.2 ppb (6) 0.0 ppb (0) 31.0 ppb (24) 0.23 ppb (3) N/A 4.0 μg/m3 (17) 24.0
 
Sept. 15, 2019, 11 p.m. 3.5 ppb (3) 0.0 ppb (0) 3.1 ppb (3) 4.0 ppb (4) 3.0 ppb (3) 0.0 ppb (0) 38.0 ppb (29) 0.19 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
Sept. 15, 2019, 10 p.m. 2.0 ppb (2) 0.0 ppb (0) 1.8 ppb (2) 2.0 ppb (2) 1.7 ppb (2) 0.0 ppb (0) 42.0 ppb (32) 0.16 ppb (2) N/A 5.0 μg/m3 (21) 32.0
 
Sept. 15, 2019, 9 p.m. 1.3 ppb (1) 0.1 ppb (0) 1.1 ppb (1) 1.0 ppb (1) 1.0 ppb (1) 0.0 ppb (0) 45.0 ppb (35) 0.15 ppb (2) N/A 4.0 μg/m3 (17) 35.0
 
Sept. 15, 2019, 8 p.m. 0.9 ppb (1) 0.1 ppb (0) 0.7 ppb (1) 1.0 ppb (1) 0.6 ppb (1) 0.0 ppb (0) 46.0 ppb (35) 0.14 ppb (2) N/A 3.0 μg/m3 (12) 35.0
 
Sept. 15, 2019, 7 p.m. 0.9 ppb (1) 0.1 ppb (0) 0.7 ppb (1) 1.0 ppb (1) 0.5 ppb (0) 0.0 ppb (0) 47.0 ppb (36) 0.14 ppb (2) N/A 4.0 μg/m3 (17) 36.0
 
Sept. 15, 2019, 6 p.m. 1.3 ppb (1) 0.2 ppb (0) 1.1 ppb (1) 1.0 ppb (1) 0.9 ppb (1) 0.0 ppb (0) 45.0 ppb (35) 0.14 ppb (2) N/A 4.0 μg/m3 (17) 35.0
 
Sept. 15, 2019, 5 p.m. 0.9 ppb (1) 0.1 ppb (0) 0.7 ppb (1) 1.0 ppb (1) 0.6 ppb (1) 0.0 ppb (0) 45.0 ppb (35) 0.14 ppb (2) N/A 5.0 μg/m3 (21) 35.0
 
Sept. 15, 2019, 4 p.m. 1.2 ppb (1) 0.2 ppb (0) 0.9 ppb (1) 1.0 ppb (1) 0.7 ppb (1) 0.0 ppb (0) 43.0 ppb (33) 0.14 ppb (2) N/A 5.0 μg/m3 (21) 33.0
 
Sept. 15, 2019, 3 p.m. 1.5 ppb (1) 0.2 ppb (0) 1.2 ppb (1) 1.0 ppb (1) 1.0 ppb (1) 0.0 ppb (0) 39.0 ppb (30) 0.15 ppb (2) N/A 5.0 μg/m3 (21) 30.0
 
Sept. 15, 2019, 2 p.m. 1.6 ppb (1) 0.3 ppb (0) 1.3 ppb (1) 1.0 ppb (1) 1.0 ppb (1) 0.0 ppb (0) 35.0 ppb (27) 0.15 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
Sept. 15, 2019, 1 p.m. 2.1 ppb (2) 0.5 ppb (0) 1.6 ppb (1) 2.0 ppb (2) 1.2 ppb (1) 0.0 ppb (0) 29.0 ppb (22) 0.17 ppb (2) N/A 4.0 μg/m3 (17) 22.0
 
Sept. 15, 2019, noon 4.0 ppb (4) 1.0 ppb (1) 3.3 ppb (3) 3.0 ppb (3) 2.4 ppb (2) 0.0 ppb (0) 21.0 ppb (16) 0.18 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 15, 2019, 11 a.m. 3.9 ppb (4) 0.7 ppb (1) 3.2 ppb (3) 3.0 ppb (3) 2.7 ppb (3) 0.0 ppb (0) 19.0 ppb (15) 0.19 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 15, 2019, 10 a.m. 3.0 ppb (3) 0.2 ppb (0) 2.1 ppb (2) 3.0 ppb (3) 1.9 ppb (2) 0.0 ppb (0) 19.0 ppb (15) 0.18 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 15, 2019, 9 a.m. 3.6 ppb (3) 0.2 ppb (0) 2.7 ppb (3) 3.0 ppb (3) 2.6 ppb (2) 0.0 ppb (0) 20.0 ppb (15) 0.17 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 15, 2019, 8 a.m. 5.9 ppb (5) 0.3 ppb (0) 5.4 ppb (5) 6.0 ppb (6) 5.3 ppb (5) 0.0 ppb (0) 14.0 ppb (11) 0.15 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 15, 2019, 7 a.m. 5.1 ppb (5) 0.2 ppb (0) 4.6 ppb (4) 5.0 ppb (5) 4.5 ppb (4) 0.0 ppb (0) 18.0 ppb (14) 0.15 ppb (2) N/A 2.0 μg/m3 (8) 14.0
 
Sept. 15, 2019, 6 a.m. 3.1 ppb (3) 0.2 ppb (0) 2.5 ppb (2) 3.0 ppb (3) 2.4 ppb (2) 0.0 ppb (0) 24.0 ppb (18) 0.15 ppb (2) N/A 1.0 μg/m3 (4) 18.0
 
Sept. 15, 2019, 5 a.m. 4.0 ppb (4) 0.2 ppb (0) 3.2 ppb (3) 4.0 ppb (4) 3.1 ppb (3) 0.0 ppb (0) 25.0 ppb (19) 0.16 ppb (2) N/A 3.0 μg/m3 (12) 19.0
 
Sept. 15, 2019, 4 a.m. 3.1 ppb (3) 0.2 ppb (0) 2.6 ppb (2) 3.0 ppb (3) 2.5 ppb (2) 0.0 ppb (0) 26.0 ppb (20) 0.15 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 15, 2019, 3 a.m. 3.5 ppb (3) 0.2 ppb (0) 2.9 ppb (3) 3.0 ppb (3) 2.8 ppb (3) 0.0 ppb (0) 26.0 ppb (20) 0.16 ppb (2) N/A 4.0 μg/m3 (17) 20.0
 
Sept. 15, 2019, 2 a.m. 2.7 ppb (3) 0.2 ppb (0) 2.0 ppb (2) 3.0 ppb (3) 1.9 ppb (2) 0.0 ppb (0) 29.0 ppb (22) 0.16 ppb (2) N/A 3.0 μg/m3 (12) 22.0
 
Sept. 15, 2019, 1 a.m. 3.0 ppb (3) 0.2 ppb (0) 2.2 ppb (2) 3.0 ppb (3) 2.1 ppb (2) 0.0 ppb (0) 29.0 ppb (22) 0.15 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
Sept. 15, 2019, midnight 2.7 ppb (3) 0.2 ppb (0) 2.1 ppb (2) 3.0 ppb (3) 2.0 ppb (2) 0.0 ppb (0) 32.0 ppb (25) 0.15 ppb (2) N/A 10.0 μg/m3 (42) 42.0
 
Sept. 14, 2019, 11 p.m. 2.3 ppb (2) 0.1 ppb (0) 1.7 ppb (2) 2.0 ppb (2) 1.6 ppb (1) 0.0 ppb (0) 33.0 ppb (25) 0.15 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 14, 2019, 10 p.m. 2.9 ppb (3) 0.2 ppb (0) 2.3 ppb (2) 3.0 ppb (3) 2.2 ppb (2) 0.0 ppb (0) 32.0 ppb (25) 0.17 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
Sept. 14, 2019, 9 p.m. 2.8 ppb (3) 0.2 ppb (0) 2.3 ppb (2) 3.0 ppb (3) 2.1 ppb (2) 0.0 ppb (0) 32.0 ppb (25) 0.16 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 14, 2019, 8 p.m. 3.6 ppb (3) 0.6 ppb (1) 3.0 ppb (3) 3.0 ppb (3) 2.4 ppb (2) 0.0 ppb (0) 32.0 ppb (25) 0.18 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 14, 2019, 7 p.m. 3.1 ppb (3) 0.4 ppb (0) 2.5 ppb (2) 3.0 ppb (3) 2.2 ppb (2) 0.0 ppb (0) 33.0 ppb (25) 0.17 ppb (2) N/A 5.0 μg/m3 (21) 25.0
 
Sept. 14, 2019, 6 p.m. 1.9 ppb (2) 0.2 ppb (0) 1.6 ppb (1) 2.0 ppb (2) 1.3 ppb (1) 0.0 ppb (0) 35.0 ppb (27) 0.16 ppb (2) N/A 16.0 μg/m3 (59) 59.0
 
Sept. 14, 2019, 5 p.m. 1.6 ppb (1) 0.3 ppb (0) 1.3 ppb (1) 1.0 ppb (1) 1.0 ppb (1) 0.0 ppb (0) 35.0 ppb (27) 0.15 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 14, 2019, 4 p.m. 1.9 ppb (2) 0.4 ppb (0) 1.5 ppb (1) 2.0 ppb (2) 1.1 ppb (1) 0.0 ppb (0) 35.0 ppb (27) 0.18 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 14, 2019, 3 p.m. 2.8 ppb (3) 0.6 ppb (1) 2.1 ppb (2) 2.0 ppb (2) 1.6 ppb (1) 0.0 ppb (0) 34.0 ppb (26) 0.15 ppb (2) N/A 10.0 μg/m3 (42) 42.0
 
Sept. 14, 2019, 2 p.m. 3.8 ppb (4) 0.9 ppb (1) 2.9 ppb (3) 3.0 ppb (3) 2.1 ppb (2) 0.0 ppb (0) 29.0 ppb (22) 0.17 ppb (2) N/A 10.0 μg/m3 (42) 42.0
 
Sept. 14, 2019, 1 p.m. 11.1 ppb (10) 3.8 ppb (4) 10.1 ppb (9) 7.0 ppb (6) 6.6 ppb (6) 0.0 ppb (0) 14.0 ppb (11) 0.26 ppb (3) N/A 10.0 μg/m3 (42) 42.0
 
Sept. 14, 2019, noon 12.1 ppb (11) 3.9 ppb (4) 11.0 ppb (10) 8.0 ppb (7) 7.4 ppb (7) 0.0 ppb (0) 10.0 ppb (8) 0.28 ppb (3) N/A 7.0 μg/m3 (29) 29.0
 
Sept. 14, 2019, 11 a.m. 11.5 ppb (11) 4.0 ppb (4) 10.4 ppb (10) 8.0 ppb (7) 6.9 ppb (6) 0.0 ppb (0) 8.0 ppb (6) 0.32 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 14, 2019, 10 a.m. 8.4 ppb (8) 1.0 ppb (1) 7.7 ppb (7) 8.0 ppb (7) 6.8 ppb (6) 0.0 ppb (0) 6.0 ppb (5) 0.32 ppb (4) N/A 8.0 μg/m3 (33) 33.0
 
Sept. 14, 2019, 9 a.m. 7.7 ppb (7) 0.3 ppb (0) 6.9 ppb (6) 7.0 ppb (6) 6.7 ppb (6) 0.0 ppb (0) 7.0 ppb (5) 0.21 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 14, 2019, 8 a.m. 6.0 ppb (6) 0.2 ppb (0) 5.6 ppb (5) 6.0 ppb (6) 5.4 ppb (5) 0.0 ppb (0) 9.0 ppb (7) 0.18 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 14, 2019, 7 a.m. 4.0 ppb (4) 0.3 ppb (0) 3.5 ppb (3) 4.0 ppb (4) 3.3 ppb (3) 0.0 ppb (0) 13.0 ppb (10) 0.17 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
Sept. 14, 2019, 6 a.m. 3.6 ppb (3) 0.1 ppb (0) 3.2 ppb (3) 4.0 ppb (4) 3.1 ppb (3) 0.0 ppb (0) 13.0 ppb (10) 0.16 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
Sept. 14, 2019, 5 a.m. 3.4 ppb (3) 0.1 ppb (0) 3.2 ppb (3) 3.0 ppb (3) 3.1 ppb (3) 0.0 ppb (0) 15.0 ppb (12) 0.16 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 14, 2019, 4 a.m. 3.7 ppb (3) 0.1 ppb (0) 3.1 ppb (3) 4.0 ppb (4) 3.0 ppb (3) 0.0 ppb (0) 15.0 ppb (12) 0.17 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 14, 2019, 3 a.m. 6.6 ppb (6) 0.3 ppb (0) 6.3 ppb (6) 6.0 ppb (6) 5.8 ppb (5) 0.0 ppb (0) 11.0 ppb (8) 0.21 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 14, 2019, 2 a.m. 4.2 ppb (4) 0.1 ppb (0) 4.1 ppb (4) 4.0 ppb (4) 4.0 ppb (4) 0.0 ppb (0) 18.0 ppb (14) 0.19 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 14, 2019, 1 a.m. 5.2 ppb (5) 0.1 ppb (0) 4.6 ppb (4) 5.0 ppb (5) 4.5 ppb (4) 0.0 ppb (0) 18.0 ppb (14) 0.19 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 14, 2019, midnight 3.4 ppb (3) 0.1 ppb (0) 2.9 ppb (3) 3.0 ppb (3) 2.8 ppb (3) 0.0 ppb (0) 23.0 ppb (18) 0.16 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 13, 2019, 11 p.m. 2.8 ppb (3) 0.1 ppb (0) 2.2 ppb (2) 3.0 ppb (3) 2.1 ppb (2) 0.0 ppb (0) 26.0 ppb (20) 0.16 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 13, 2019, 10 p.m. 2.1 ppb (2) 0.1 ppb (0) 1.6 ppb (1) 2.0 ppb (2) 1.4 ppb (1) 0.0 ppb (0) 31.0 ppb (24) 0.15 ppb (2) N/A 5.0 μg/m3 (21) 24.0
 
Sept. 13, 2019, 9 p.m. 1.5 ppb (1) 0.2 ppb (0) 1.0 ppb (1) 1.0 ppb (1) 0.8 ppb (1) 0.0 ppb (0) 32.0 ppb (25) 0.14 ppb (2) N/A 5.0 μg/m3 (21) 25.0
 
Sept. 13, 2019, 8 p.m. 1.1 ppb (1) 0.2 ppb (0) 0.7 ppb (1) 1.0 ppb (1) 0.5 ppb (0) 0.0 ppb (0) 34.0 ppb (26) 0.14 ppb (2) N/A 5.0 μg/m3 (21) 26.0
 
Sept. 13, 2019, 7 p.m. 1.2 ppb (1) 0.2 ppb (0) 0.8 ppb (1) 1.0 ppb (1) 0.5 ppb (0) 0.0 ppb (0) 34.0 ppb (26) 0.14 ppb (2) N/A 3.0 μg/m3 (12) 26.0
 
Sept. 13, 2019, 6 p.m. 1.0 ppb (1) 0.2 ppb (0) 0.6 ppb (1) 1.0 ppb (1) 0.4 ppb (0) 0.0 ppb (0) 33.0 ppb (25) 0.13 ppb (1) N/A 2.0 μg/m3 (8) 25.0
 
Sept. 13, 2019, 5 p.m. 1.0 ppb (1) 0.2 ppb (0) 0.6 ppb (1) 1.0 ppb (1) 0.4 ppb (0) 0.0 ppb (0) 32.0 ppb (25) 0.13 ppb (1) N/A 3.0 μg/m3 (12) 25.0
 
Sept. 13, 2019, 4 p.m. 0.9 ppb (1) 0.2 ppb (0) 0.6 ppb (1) 1.0 ppb (1) 0.4 ppb (0) 0.0 ppb (0) 31.0 ppb (24) 0.13 ppb (1) N/A 5.0 μg/m3 (21) 24.0
 
Sept. 13, 2019, 3 p.m. 1.2 ppb (1) 0.2 ppb (0) 0.9 ppb (1) 1.0 ppb (1) 0.6 ppb (1) 0.0 ppb (0) 28.0 ppb (22) 0.14 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 13, 2019, 2 p.m. 2.4 ppb (2) 0.6 ppb (1) 2.0 ppb (2) 2.0 ppb (2) 1.4 ppb (1) 0.0 ppb (0) 24.0 ppb (18) 0.16 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 13, 2019, 1 p.m. 5.1 ppb (5) 1.9 ppb (2) 4.3 ppb (4) 3.0 ppb (3) 2.5 ppb (2) 0.0 ppb (0) 17.0 ppb (13) 0.17 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
Sept. 13, 2019, noon 9.0 ppb (8) 4.0 ppb (4) 8.0 ppb (7) 5.0 ppb (5) 4.1 ppb (4) 0.0 ppb (0) 12.0 ppb (9) 0.21 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 13, 2019, 11 a.m. 9.8 ppb (9) 3.6 ppb (3) 8.6 ppb (8) 6.0 ppb (6) 5.3 ppb (5) 0.0 ppb (0) 8.0 ppb (6) 0.23 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 13, 2019, 10 a.m. 8.6 ppb (8) 1.4 ppb (1) 7.4 ppb (7) 7.0 ppb (6) 6.1 ppb (6) 0.0 ppb (0) 7.0 ppb (5) 0.21 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 13, 2019, 9 a.m. 7.6 ppb (7) 0.3 ppb (0) 6.5 ppb (6) 7.0 ppb (6) 6.2 ppb (6) 0.0 ppb (0) 8.0 ppb (6) 0.19 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 13, 2019, 8 a.m. 6.7 ppb (6) 0.2 ppb (0) 5.5 ppb (5) 7.0 ppb (6) 5.3 ppb (5) 0.0 ppb (0) 9.0 ppb (7) 0.17 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 13, 2019, 7 a.m. N/A N/A 4.4 ppb (4) N/A 4.3 ppb (4) N/A 10.0 ppb (8) N/A N/A 3.0 μg/m3 (12) 12.0
 
Sept. 13, 2019, 6 a.m. N/A N/A 3.8 ppb (4) N/A 3.7 ppb (3) N/A 11.0 ppb (8) N/A N/A 4.0 μg/m3 (17) 17.0
 
Sept. 13, 2019, 5 a.m. N/A N/A 1.9 ppb (2) N/A 1.8 ppb (2) N/A 12.0 ppb (9) N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 13, 2019, 4 a.m. 5.4 ppb (5) 0.2 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 12.0 ppb (9) 0.17 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
Sept. 13, 2019, 3 a.m. 6.5 ppb (6) 0.2 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 11.0 ppb (8) 0.19 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 13, 2019, 2 a.m. 6.5 ppb (6) 0.2 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 13.0 ppb (10) 0.18 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
Sept. 13, 2019, 1 a.m. 5.6 ppb (5) 0.1 ppb (0) 5.0 ppb (5) 6.0 ppb (6) 4.9 ppb (5) 0.0 ppb (0) 16.0 ppb (12) 0.17 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
Sept. 13, 2019, midnight 3.9 ppb (4) 0.2 ppb (0) 3.3 ppb (3) 4.0 ppb (4) 3.1 ppb (3) 0.0 ppb (0) 20.0 ppb (15) 0.16 ppb (2) N/A 3.0 μg/m3 (12) 15.0
 
Sept. 12, 2019, 11 p.m. 3.4 ppb (3) 0.1 ppb (0) 2.7 ppb (3) 3.0 ppb (3) 2.6 ppb (2) 0.0 ppb (0) 22.0 ppb (17) 0.15 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 12, 2019, 10 p.m. 2.8 ppb (3) 0.2 ppb (0) 2.2 ppb (2) 3.0 ppb (3) 2.0 ppb (2) 0.0 ppb (0) 24.0 ppb (18) 0.14 ppb (2) N/A 4.0 μg/m3 (17) 18.0
 
Sept. 12, 2019, 9 p.m. 2.6 ppb (2) 0.3 ppb (0) 2.1 ppb (2) 2.0 ppb (2) 1.8 ppb (2) 0.0 ppb (0) 24.0 ppb (18) 0.15 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 12, 2019, 8 p.m. 2.0 ppb (2) 0.3 ppb (0) 1.5 ppb (1) 2.0 ppb (2) 1.2 ppb (1) 0.0 ppb (0) 25.0 ppb (19) 0.14 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 12, 2019, 7 p.m. 2.3 ppb (2) 0.5 ppb (0) 1.8 ppb (2) 2.0 ppb (2) 1.3 ppb (1) 0.0 ppb (0) 21.0 ppb (16) 0.14 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 12, 2019, 6 p.m. 2.2 ppb (2) 0.5 ppb (0) 1.8 ppb (2) 2.0 ppb (2) 1.3 ppb (1) 0.0 ppb (0) 20.0 ppb (15) 0.15 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 12, 2019, 5 p.m. 1.7 ppb (2) 0.5 ppb (0) 1.3 ppb (1) 1.0 ppb (1) 0.8 ppb (1) 0.0 ppb (0) 20.0 ppb (15) 0.15 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 12, 2019, 4 p.m. 2.2 ppb (2) 0.6 ppb (1) 1.7 ppb (2) 2.0 ppb (2) 1.2 ppb (1) 0.0 ppb (0) 18.0 ppb (14) 0.16 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 12, 2019, 3 p.m. 1.9 ppb (2) 0.4 ppb (0) 1.4 ppb (1) 2.0 ppb (2) 1.0 ppb (1) 0.0 ppb (0) 18.0 ppb (14) 0.16 ppb (2) N/A 1.0 μg/m3 (4) 14.0
 
Sept. 12, 2019, 2 p.m. 1.9 ppb (2) 0.3 ppb (0) 1.4 ppb (1) 2.0 ppb (2) 1.1 ppb (1) 0.0 ppb (0) 19.0 ppb (15) 0.16 ppb (2) N/A 1.0 μg/m3 (4) 15.0
 
Sept. 12, 2019, 1 p.m. 2.7 ppb (3) 0.3 ppb (0) 2.2 ppb (2) 3.0 ppb (3) 2.0 ppb (2) 0.0 ppb (0) 20.0 ppb (15) 0.18 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 12, 2019, noon 3.9 ppb (4) 0.4 ppb (0) 3.4 ppb (3) 4.0 ppb (4) 3.0 ppb (3) 0.0 ppb (0) 22.0 ppb (17) 0.2 ppb (2) N/A 10.0 μg/m3 (42) 42.0
 
Sept. 12, 2019, 11 a.m. 7.0 ppb (6) 0.4 ppb (0) 6.4 ppb (6) 7.0 ppb (6) 6.1 ppb (6) 0.0 ppb (0) 20.0 ppb (15) 0.26 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 12, 2019, 10 a.m. 13.0 ppb (12) 2.0 ppb (2) 11.8 ppb (11) 11.0 ppb (10) 10.8 ppb (10) 0.0 ppb (0) 9.0 ppb (7) 0.37 ppb (4) N/A 8.0 μg/m3 (33) 33.0
 
Sept. 12, 2019, 9 a.m. 12.7 ppb (12) 4.3 ppb (4) 12.3 ppb (11) 8.0 ppb (7) 9.0 ppb (8) 0.0 ppb (0) 3.0 ppb (2) 0.24 ppb (3) N/A 18.0 μg/m3 (63) 63.0
 
Sept. 12, 2019, 8 a.m. 6.0 ppb (6) 0.6 ppb (1) 5.4 ppb (5) 5.0 ppb (5) 5.3 ppb (5) 0.0 ppb (0) N/A 0.19 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
Sept. 12, 2019, 7 a.m. 5.8 ppb (5) 0.3 ppb (0) 5.4 ppb (5) 6.0 ppb (6) 5.3 ppb (5) 0.0 ppb (0) N/A 0.2 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
Sept. 12, 2019, 6 a.m. 5.6 ppb (5) 0.2 ppb (0) 5.4 ppb (5) 5.0 ppb (5) 5.3 ppb (5) 0.0 ppb (0) 11.0 ppb (8) 0.2 ppb (2) N/A 10.0 μg/m3 (42) 42.0
 
Sept. 12, 2019, 5 a.m. 4.9 ppb (5) 0.2 ppb (0) 4.5 ppb (4) 5.0 ppb (5) 4.4 ppb (4) 0.0 ppb (0) 17.0 ppb (13) 0.2 ppb (2) N/A 12.0 μg/m3 (50) 50.0
 
Sept. 12, 2019, 4 a.m. 5.6 ppb (5) 0.1 ppb (0) 5.3 ppb (5) 6.0 ppb (6) 5.2 ppb (5) 0.0 ppb (0) 19.0 ppb (15) 0.21 ppb (2) N/A 10.0 μg/m3 (42) 42.0
 
Sept. 12, 2019, 3 a.m. 6.0 ppb (6) 0.1 ppb (0) 5.9 ppb (5) 6.0 ppb (6) 5.8 ppb (5) 0.0 ppb (0) 24.0 ppb (18) 0.22 ppb (2) N/A 10.0 μg/m3 (42) 42.0
 
Sept. 12, 2019, 2 a.m. 6.0 ppb (6) 0.1 ppb (0) 5.5 ppb (5) 6.0 ppb (6) 5.4 ppb (5) 0.0 ppb (0) 25.0 ppb (19) 0.22 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
Sept. 12, 2019, 1 a.m. 6.7 ppb (6) 0.1 ppb (0) 6.3 ppb (6) 7.0 ppb (6) 6.2 ppb (6) 0.0 ppb (0) 29.0 ppb (22) 0.24 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 12, 2019, midnight 4.8 ppb (4) 0.0 ppb (0) 4.7 ppb (4) 5.0 ppb (5) 4.6 ppb (4) 0.0 ppb (0) 35.0 ppb (27) 0.21 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
Sept. 11, 2019, 11 p.m. 4.0 ppb (4) 0.0 ppb (0) 3.8 ppb (4) 4.0 ppb (4) 3.7 ppb (3) 0.0 ppb (0) 39.0 ppb (30) 0.22 ppb (2) N/A 10.0 μg/m3 (42) 42.0
 
Sept. 11, 2019, 10 p.m. 4.7 ppb (4) 0.1 ppb (0) 4.7 ppb (4) 5.0 ppb (5) 4.6 ppb (4) 0.0 ppb (0) 54.0 ppb (42) 0.23 ppb (3) N/A 11.0 μg/m3 (46) 46.0
 
Sept. 11, 2019, 9 p.m. 3.9 ppb (4) 0.1 ppb (0) 4.0 ppb (4) 4.0 ppb (4) 3.8 ppb (4) 0.0 ppb (0) 64.0 ppb (49) 0.22 ppb (2) N/A 11.0 μg/m3 (46) 49.0
 
Sept. 11, 2019, 8 p.m. 6.6 ppb (6) 0.5 ppb (0) 6.8 ppb (6) 6.0 ppb (6) 6.2 ppb (6) 0.0 ppb (0) 61.0 ppb (47) 0.22 ppb (2) N/A 10.0 μg/m3 (42) 47.0
 
Sept. 11, 2019, 7 p.m. 4.6 ppb (4) 0.3 ppb (0) 4.5 ppb (4) 4.0 ppb (4) 4.1 ppb (4) 0.0 ppb (0) 60.0 ppb (46) 0.21 ppb (2) N/A 7.0 μg/m3 (29) 46.0
 
Sept. 11, 2019, 6 p.m. 7.1 ppb (7) 0.9 ppb (1) 7.1 ppb (7) 6.0 ppb (6) 6.2 ppb (6) 0.0 ppb (0) 55.0 ppb (42) 0.21 ppb (2) N/A 8.0 μg/m3 (33) 42.0
 
Sept. 11, 2019, 5 p.m. 6.3 ppb (6) 0.9 ppb (1) 6.2 ppb (6) 5.0 ppb (5) 5.3 ppb (5) 0.0 ppb (0) 48.0 ppb (37) 0.2 ppb (2) N/A 8.0 μg/m3 (33) 37.0
 
Sept. 11, 2019, 4 p.m. 6.9 ppb (6) 1.2 ppb (1) 6.5 ppb (6) 6.0 ppb (6) 5.3 ppb (5) 0.0 ppb (0) 41.0 ppb (32) 0.2 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
Sept. 11, 2019, 3 p.m. 8.9 ppb (8) 1.6 ppb (1) 8.1 ppb (8) 7.0 ppb (6) 6.6 ppb (6) 0.0 ppb (0) 34.0 ppb (26) 0.2 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 11, 2019, 2 p.m. 9.1 ppb (8) 2.4 ppb (2) 7.0 ppb (6) 7.0 ppb (6) 5.1 ppb (5) 0.0 ppb (0) 34.0 ppb (26) 0.18 ppb (2) N/A 5.0 μg/m3 (21) 26.0
 
Sept. 11, 2019, 1 p.m. 12.5 ppb (12) 4.7 ppb (4) 9.4 ppb (9) 8.0 ppb (7) 7.2 ppb (7) 0.0 ppb (0) 30.0 ppb (23) 0.21 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
Sept. 11, 2019, noon 7.0 ppb (6) 2.6 ppb (2) 5.3 ppb (5) 5.0 ppb (5) 4.0 ppb (4) 0.0 ppb (0) 30.0 ppb (23) 0.48 ppb (5) N/A 11.0 μg/m3 (46) 46.0
 
Sept. 11, 2019, 11 a.m. 9.3 ppb (9) 0.8 ppb (1) 8.6 ppb (8) 9.0 ppb (8) 8.0 ppb (7) 0.0 ppb (0) 26.0 ppb (20) 0.2 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 11, 2019, 10 a.m. 5.3 ppb (5) 0.2 ppb (0) 4.8 ppb (4) 5.0 ppb (5) 4.7 ppb (4) 0.0 ppb (0) 28.0 ppb (22) 0.16 ppb (2) N/A 2.0 μg/m3 (8) 22.0
 
Sept. 11, 2019, 9 a.m. 4.5 ppb (4) 0.1 ppb (0) 4.0 ppb (4) 4.0 ppb (4) 3.9 ppb (4) 0.0 ppb (0) 30.0 ppb (23) 0.15 ppb (2) N/A 2.0 μg/m3 (8) 23.0
 
Sept. 11, 2019, 8 a.m. 2.8 ppb (3) 0.1 ppb (0) 2.4 ppb (2) 3.0 ppb (3) 2.3 ppb (2) 0.0 ppb (0) 31.0 ppb (24) 0.15 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 11, 2019, 7 a.m. 2.3 ppb (2) 0.1 ppb (0) 1.9 ppb (2) 2.0 ppb (2) 1.8 ppb (2) 0.0 ppb (0) 31.0 ppb (24) 0.15 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
Sept. 11, 2019, 6 a.m. 2.3 ppb (2) 0.1 ppb (0) 1.8 ppb (2) 2.0 ppb (2) 1.7 ppb (2) 0.0 ppb (0) 28.0 ppb (22) 0.15 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
Sept. 11, 2019, 5 a.m. 2.1 ppb (2) 0.1 ppb (0) 1.6 ppb (1) 2.0 ppb (2) 1.5 ppb (1) 0.0 ppb (0) 26.0 ppb (20) 0.15 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
Sept. 11, 2019, 4 a.m. 2.1 ppb (2) 0.1 ppb (0) 1.6 ppb (1) 2.0 ppb (2) 1.5 ppb (1) 0.0 ppb (0) 25.0 ppb (19) 0.14 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 11, 2019, 3 a.m. 2.8 ppb (3) 0.1 ppb (0) 2.3 ppb (2) 3.0 ppb (3) 2.2 ppb (2) 0.0 ppb (0) 24.0 ppb (18) 0.15 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 11, 2019, 2 a.m. 2.9 ppb (3) 0.1 ppb (0) 2.5 ppb (2) 3.0 ppb (3) 2.4 ppb (2) 0.0 ppb (0) 24.0 ppb (18) 0.15 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 11, 2019, 1 a.m. 2.7 ppb (3) 0.1 ppb (0) 2.2 ppb (2) 3.0 ppb (3) 2.2 ppb (2) 0.0 ppb (0) 27.0 ppb (21) 0.15 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 11, 2019, midnight 3.6 ppb (3) 0.1 ppb (0) 3.2 ppb (3) 4.0 ppb (4) 3.0 ppb (3) 0.0 ppb (0) 27.0 ppb (21) 0.17 ppb (2) N/A 12.0 μg/m3 (50) 50.0
 
Sept. 10, 2019, 11 p.m. 3.6 ppb (3) 0.1 ppb (0) 3.1 ppb (3) 4.0 ppb (4) 3.0 ppb (3) 0.0 ppb (0) 29.0 ppb (22) 0.18 ppb (2) N/A 10.0 μg/m3 (42) 42.0
 
Sept. 10, 2019, 10 p.m. 3.1 ppb (3) 0.1 ppb (0) 2.9 ppb (3) 3.0 ppb (3) 2.6 ppb (2) 0.0 ppb (0) 31.0 ppb (24) 0.17 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
Sept. 10, 2019, 9 p.m. 2.3 ppb (2) 0.1 ppb (0) 2.1 ppb (2) 2.0 ppb (2) 1.9 ppb (2) 0.0 ppb (0) 34.0 ppb (26) 0.16 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
Sept. 10, 2019, 8 p.m. 1.8 ppb (2) 0.1 ppb (0) 1.6 ppb (1) 2.0 ppb (2) 1.4 ppb (1) 0.0 ppb (0) 35.0 ppb (27) 0.15 ppb (2) N/A 13.0 μg/m3 (52) 52.0
 
Sept. 10, 2019, 7 p.m. 2.3 ppb (2) 0.4 ppb (0) 1.4 ppb (1) 2.0 ppb (2) 1.1 ppb (1) 0.0 ppb (0) 35.0 ppb (27) 0.15 ppb (2) N/A N/A 27.0
 
Sept. 10, 2019, 6 p.m. 2.3 ppb (2) 0.3 ppb (0) 2.0 ppb (2) 2.0 ppb (2) 1.6 ppb (1) 0.0 ppb (0) 38.0 ppb (29) 0.16 ppb (2) N/A 10.0 μg/m3 (42) 42.0
 
Sept. 10, 2019, 5 p.m. 3.0 ppb (3) 0.3 ppb (0) 2.5 ppb (2) 3.0 ppb (3) 2.2 ppb (2) 0.0 ppb (0) 36.0 ppb (28) 0.17 ppb (2) N/A 6.0 μg/m3 (25) 28.0
 
Sept. 10, 2019, 4 p.m. 2.7 ppb (3) 0.3 ppb (0) 2.2 ppb (2) 2.0 ppb (2) 1.9 ppb (2) 0.0 ppb (0) 36.0 ppb (28) 0.16 ppb (2) N/A 6.0 μg/m3 (25) 28.0
 
Sept. 10, 2019, 3 p.m. 3.5 ppb (3) 0.7 ppb (1) 4.2 ppb (4) 3.0 ppb (3) 2.5 ppb (2) 0.0 ppb (0) 35.0 ppb (27) 0.17 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
Sept. 10, 2019, 2 p.m. 4.0 ppb (4) 1.3 ppb (1) 7.5 ppb (7) 3.0 ppb (3) 1.0 ppb (1) 0.0 ppb (0) 30.0 ppb (23) 0.17 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
Sept. 10, 2019, 1 p.m. 6.6 ppb (6) 1.9 ppb (2) 5.7 ppb (5) 5.0 ppb (5) 4.0 ppb (4) 0.0 ppb (0) 23.0 ppb (18) 0.2 ppb (2) N/A 11.0 μg/m3 (46) 46.0
 
Sept. 10, 2019, noon 14.5 ppb (13) 5.7 ppb (5) 13.3 ppb (12) 9.0 ppb (8) 8.0 ppb (7) 0.0 ppb (0) 12.0 ppb (9) 0.29 ppb (3) N/A 11.0 μg/m3 (46) 46.0
 
Sept. 10, 2019, 11 a.m. 19.3 ppb (18) 8.6 ppb (8) 18.1 ppb (17) 11.0 ppb (10) 10.2 ppb (9) 0.0 ppb (0) 5.0 ppb (4) 0.34 ppb (4) N/A 8.0 μg/m3 (33) 33.0
 
Sept. 10, 2019, 10 a.m. 13.9 ppb (13) 3.5 ppb (3) 13.2 ppb (12) 11.0 ppb (10) 9.9 ppb (9) 0.0 ppb (0) 3.0 ppb (2) 0.27 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 10, 2019, 9 a.m. 9.9 ppb (9) 0.8 ppb (1) 9.3 ppb (9) 9.0 ppb (8) 8.7 ppb (8) 0.0 ppb (0) 4.0 ppb (3) 0.21 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
Sept. 10, 2019, 8 a.m. 6.5 ppb (6) 0.3 ppb (0) 5.9 ppb (5) 6.0 ppb (6) 5.8 ppb (5) 0.0 ppb (0) 7.0 ppb (5) 0.2 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 10, 2019, 7 a.m. 5.0 ppb (5) 0.3 ppb (0) 4.2 ppb (4) 5.0 ppb (5) 4.1 ppb (4) 0.0 ppb (0) N/A 0.2 ppb (2) N/A 12.0 μg/m3 (50) 50.0
 
Sept. 10, 2019, 6 a.m. 4.9 ppb (5) 0.2 ppb (0) 4.2 ppb (4) 5.0 ppb (5) 4.0 ppb (4) 0.0 ppb (0) 9.0 ppb (7) 0.18 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 10, 2019, 5 a.m. 4.1 ppb (4) 0.2 ppb (0) 3.3 ppb (3) 4.0 ppb (4) 3.2 ppb (3) 0.0 ppb (0) 13.0 ppb (10) 0.18 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
Sept. 10, 2019, 4 a.m. 4.0 ppb (4) 0.2 ppb (0) 3.1 ppb (3) 4.0 ppb (4) 3.1 ppb (3) 0.0 ppb (0) 17.0 ppb (13) 0.17 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
Sept. 10, 2019, 3 a.m. 4.1 ppb (4) 0.1 ppb (0) 2.3 ppb (2) 4.0 ppb (4) 2.2 ppb (2) 0.0 ppb (0) 21.0 ppb (16) 0.19 ppb (2) N/A 10.0 μg/m3 (42) 42.0
 
Sept. 10, 2019, 2 a.m. 6.2 ppb (6) 0.1 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 26.0 ppb (20) 0.2 ppb (2) N/A 10.0 μg/m3 (42) 42.0
 
Sept. 10, 2019, 1 a.m. 5.7 ppb (5) 0.1 ppb (0) 5.2 ppb (5) 6.0 ppb (6) 5.1 ppb (5) 0.0 ppb (0) 31.0 ppb (24) 0.21 ppb (2) N/A 11.0 μg/m3 (46) 46.0
 
Sept. 10, 2019, midnight 4.6 ppb (4) 0.1 ppb (0) 3.8 ppb (4) 5.0 ppb (5) 3.7 ppb (3) 0.0 ppb (0) 37.0 ppb (28) 0.19 ppb (2) N/A 11.0 μg/m3 (46) 46.0
 
Sept. 9, 2019, 11 p.m. 3.7 ppb (3) 0.1 ppb (0) 3.2 ppb (3) 4.0 ppb (4) 3.1 ppb (3) 0.0 ppb (0) 39.0 ppb (30) 0.19 ppb (2) N/A 11.0 μg/m3 (46) 46.0