AQSQID: 060371103

Site Name: Los Angeles - N. Main Street

Location: LA (Chavez Ravine Place), CA

Reporting: True, Located: True

Current AQI: 39.0

LA (Chavez Ravine Place) CA, US: 34.0669, -118.2417

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Sept. 22, 2019, 6 p.m. 21.6 ppb (20) 3.4 ppb (3) 18.5 ppb (17) 18.0 ppb (17) 15.0 ppb (14) 1.0 ppb (1) 51.0 ppb (39) N/A N/A N/A 39.0
 
Sept. 22, 2019, 5 p.m. 30.5 ppb (28) 6.2 ppb (6) 26.6 ppb (25) 24.0 ppb (22) 20.1 ppb (19) 1.0 ppb (1) 36.0 ppb (28) N/A N/A N/A 28.0
 
Sept. 22, 2019, 4 p.m. 44.6 ppb (41) 13.7 ppb (13) 38.9 ppb (36) 31.0 ppb (29) 25.0 ppb (23) 1.0 ppb (1) 19.0 ppb (15) N/A N/A N/A 41.0
 
Sept. 22, 2019, 3 p.m. 39.8 ppb (37) 11.8 ppb (11) 34.2 ppb (32) 28.0 ppb (26) 22.3 ppb (21) 1.0 ppb (1) 15.0 ppb (12) N/A N/A N/A 37.0
 
Sept. 22, 2019, 2 p.m. 39.6 ppb (37) 10.5 ppb (10) 34.3 ppb (32) 29.0 ppb (27) 24.3 ppb (23) 0.0 ppb (0) 9.0 ppb (7) N/A N/A N/A 37.0
 
Sept. 22, 2019, 1 p.m. 33.5 ppb (31) 3.4 ppb (3) 26.2 ppb (24) 30.0 ppb (28) 23.9 ppb (22) 0.0 ppb (0) 9.0 ppb (7) N/A N/A N/A 31.0
 
Sept. 22, 2019, noon 31.0 ppb (29) 2.5 ppb (2) 25.5 ppb (24) 29.0 ppb (27) 24.7 ppb (23) 0.0 ppb (0) 9.0 ppb (7) N/A N/A N/A 29.0
 
Sept. 22, 2019, 11 a.m. 33.0 ppb (31) 4.2 ppb (4) 25.3 ppb (23) 29.0 ppb (27) 23.0 ppb (21) 0.0 ppb (0) 6.0 ppb (5) N/A N/A N/A 31.0
 
Sept. 22, 2019, 10 a.m. 26.5 ppb (25) 2.6 ppb (2) 21.7 ppb (20) 24.0 ppb (22) 21.3 ppb (20) 0.0 ppb (0) 9.0 ppb (7) N/A N/A N/A 25.0
 
Sept. 22, 2019, 9 a.m. 35.3 ppb (33) 7.1 ppb (7) 26.0 ppb (24) 28.0 ppb (26) 21.9 ppb (20) 0.0 ppb (0) 3.0 ppb (2) N/A N/A N/A 33.0
 
Sept. 22, 2019, 8 a.m. 31.7 ppb (29) 4.9 ppb (5) 26.5 ppb (25) 27.0 ppb (25) 24.6 ppb (23) 0.0 ppb (0) 5.0 ppb (4) N/A N/A N/A 29.0
 
Sept. 22, 2019, 7 a.m. 27.2 ppb (25) 2.1 ppb (2) 23.2 ppb (21) 25.0 ppb (23) 22.7 ppb (21) 0.0 ppb (0) 11.0 ppb (8) N/A N/A N/A 25.0
 
Sept. 22, 2019, 6 a.m. 27.3 ppb (25) 2.1 ppb (2) 23.9 ppb (22) 25.0 ppb (23) 23.2 ppb (21) 0.0 ppb (0) 11.0 ppb (8) N/A N/A N/A 25.0
 
Sept. 22, 2019, 5 a.m. 28.1 ppb (26) 1.9 ppb (2) 23.8 ppb (22) 26.0 ppb (24) 23.3 ppb (22) 0.0 ppb (0) 11.0 ppb (8) N/A N/A N/A 26.0
 
Sept. 22, 2019, 4 a.m. 26.7 ppb (25) 2.5 ppb (2) 22.3 ppb (21) 24.0 ppb (22) 20.7 ppb (19) 0.0 ppb (0) 13.0 ppb (10) N/A N/A N/A 25.0
 
Sept. 22, 2019, 3 a.m. 15.7 ppb (15) 1.0 ppb (1) 11.3 ppb (10) 15.0 ppb (14) 11.2 ppb (10) 0.0 ppb (0) 24.0 ppb (18) N/A N/A N/A 18.0
 
Sept. 22, 2019, 2 a.m. 9.7 ppb (9) 0.6 ppb (1) 5.6 ppb (5) 9.0 ppb (8) 5.5 ppb (5) 0.0 ppb (0) 36.0 ppb (28) N/A N/A N/A 28.0
 
Sept. 22, 2019, 1 a.m. 7.5 ppb (7) 0.3 ppb (0) 4.3 ppb (4) 7.0 ppb (6) 4.2 ppb (4) 0.0 ppb (0) 50.0 ppb (38) N/A N/A N/A 38.0
 
Sept. 22, 2019, midnight 8.0 ppb (7) 0.4 ppb (0) 5.1 ppb (5) 8.0 ppb (7) 4.7 ppb (4) 1.0 ppb (1) 63.0 ppb (48) N/A N/A N/A 48.0
 
Sept. 21, 2019, 11 p.m. 8.0 ppb (7) 0.5 ppb (0) 5.6 ppb (5) 7.0 ppb (6) 5.0 ppb (5) 1.0 ppb (1) 68.0 ppb (52) N/A N/A N/A 52.0
 
Sept. 21, 2019, 10 p.m. 12.4 ppb (11) 0.9 ppb (1) 10.1 ppb (9) 11.0 ppb (10) 9.0 ppb (8) 1.0 ppb (1) 76.0 ppb (59) N/A N/A N/A 59.0
 
Sept. 21, 2019, 9 p.m. 14.9 ppb (14) 1.3 ppb (1) 12.6 ppb (12) 14.0 ppb (13) 11.2 ppb (10) 1.0 ppb (1) 73.0 ppb (57) N/A N/A N/A 57.0
 
Sept. 21, 2019, 8 p.m. 14.5 ppb (13) 1.3 ppb (1) 12.3 ppb (11) 13.0 ppb (12) 10.9 ppb (10) 1.0 ppb (1) 74.0 ppb (57) N/A N/A N/A 57.0
 
Sept. 21, 2019, 7 p.m. 22.8 ppb (21) 3.3 ppb (3) 19.8 ppb (18) 20.0 ppb (19) 16.2 ppb (15) 1.0 ppb (1) 58.0 ppb (45) N/A N/A N/A 45.0
 
Sept. 21, 2019, 6 p.m. 26.6 ppb (25) 5.4 ppb (5) 23.1 ppb (21) 21.0 ppb (19) 17.1 ppb (16) 1.0 ppb (1) 43.0 ppb (33) N/A N/A N/A 33.0
 
Sept. 21, 2019, 5 p.m. 30.8 ppb (29) 8.2 ppb (8) 26.3 ppb (24) 23.0 ppb (21) 17.7 ppb (16) 1.0 ppb (1) 31.0 ppb (24) N/A N/A N/A 29.0
 
Sept. 21, 2019, 4 p.m. 24.6 ppb (23) 6.8 ppb (6) 19.8 ppb (18) 18.0 ppb (17) 13.0 ppb (12) 1.0 ppb (1) 26.0 ppb (20) N/A N/A N/A 23.0
 
Sept. 21, 2019, 3 p.m. 34.7 ppb (32) 13.8 ppb (13) 28.6 ppb (26) 21.0 ppb (19) 15.3 ppb (14) 0.0 ppb (0) 14.0 ppb (11) N/A N/A N/A 32.0
 
Sept. 21, 2019, 2 p.m. 51.7 ppb (48) 28.8 ppb (27) 39.6 ppb (37) 23.0 ppb (21) 15.6 ppb (14) 0.0 ppb (0) 4.0 ppb (3) N/A N/A N/A 48.0
 
Sept. 21, 2019, 1 p.m. 38.7 ppb (36) 18.5 ppb (17) 26.4 ppb (24) 20.0 ppb (19) 13.3 ppb (12) 0.0 ppb (0) 2.0 ppb (2) N/A N/A N/A 36.0
 
Sept. 21, 2019, noon 40.7 ppb (38) 20.6 ppb (19) 33.3 ppb (31) 20.0 ppb (19) 14.8 ppb (14) 0.0 ppb (0) 2.0 ppb (2) N/A N/A N/A 38.0
 
Sept. 21, 2019, 11 a.m. 47.2 ppb (44) 24.6 ppb (23) 38.8 ppb (36) 23.0 ppb (21) 12.7 ppb (12) 0.0 ppb (0) 2.0 ppb (2) N/A N/A N/A 44.0
 
Sept. 21, 2019, 10 a.m. 30.3 ppb (28) 8.2 ppb (8) 25.1 ppb (23) 22.0 ppb (20) 18.9 ppb (18) 0.0 ppb (0) 3.0 ppb (2) N/A N/A N/A 28.0
 
Sept. 21, 2019, 9 a.m. 31.1 ppb (29) 7.0 ppb (6) 23.2 ppb (21) 24.0 ppb (22) 18.3 ppb (17) 0.0 ppb (0) 3.0 ppb (2) N/A N/A N/A 29.0
 
Sept. 21, 2019, 8 a.m. 36.0 ppb (33) 8.9 ppb (8) 34.4 ppb (32) 27.0 ppb (25) 24.9 ppb (23) 0.0 ppb (0) 3.0 ppb (2) N/A N/A N/A 33.0
 
Sept. 21, 2019, 7 a.m. 33.1 ppb (31) 4.2 ppb (4) 27.6 ppb (26) 29.0 ppb (27) 25.0 ppb (23) 0.0 ppb (0) 5.0 ppb (4) N/A N/A N/A 31.0
 
Sept. 21, 2019, 6 a.m. 24.6 ppb (23) 2.3 ppb (2) 21.4 ppb (20) 22.0 ppb (20) 19.8 ppb (18) 1.0 ppb (1) 15.0 ppb (12) N/A N/A N/A 23.0
 
Sept. 21, 2019, 5 a.m. 20.5 ppb (19) 1.2 ppb (1) 17.1 ppb (16) 19.0 ppb (18) 16.9 ppb (16) 0.0 ppb (0) 19.0 ppb (15) N/A N/A N/A 19.0
 
Sept. 21, 2019, 4 a.m. 13.0 ppb (12) 1.0 ppb (1) 8.7 ppb (8) 12.0 ppb (11) 8.1 ppb (8) 0.0 ppb (0) 26.0 ppb (20) N/A N/A N/A 20.0
 
Sept. 21, 2019, 3 a.m. 11.3 ppb (10) 0.6 ppb (1) 7.1 ppb (7) 11.0 ppb (10) 6.9 ppb (6) 0.0 ppb (0) 29.0 ppb (22) N/A N/A N/A 22.0
 
Sept. 21, 2019, 2 a.m. 11.5 ppb (11) 0.5 ppb (0) 7.1 ppb (7) 11.0 ppb (10) 6.9 ppb (6) 0.0 ppb (0) 33.0 ppb (25) N/A N/A N/A 25.0
 
Sept. 21, 2019, 1 a.m. 7.9 ppb (7) 0.4 ppb (0) 3.9 ppb (4) 8.0 ppb (7) 3.6 ppb (3) 0.0 ppb (0) 40.0 ppb (31) N/A N/A N/A 31.0
 
Sept. 21, 2019, midnight 6.2 ppb (6) 0.7 ppb (1) 2.3 ppb (2) 5.0 ppb (5) 1.6 ppb (1) 0.0 ppb (0) 41.0 ppb (32) N/A N/A N/A 32.0
 
Sept. 20, 2019, 11 p.m. 7.1 ppb (7) 0.9 ppb (1) 3.3 ppb (3) 6.0 ppb (6) 2.3 ppb (2) 0.0 ppb (0) 47.0 ppb (36) N/A N/A N/A 36.0
 
Sept. 20, 2019, 10 p.m. 9.8 ppb (9) 1.6 ppb (1) 5.7 ppb (5) 8.0 ppb (7) 4.0 ppb (4) 1.0 ppb (1) 46.0 ppb (35) N/A N/A N/A 35.0
 
Sept. 20, 2019, 9 p.m. 12.8 ppb (12) 2.6 ppb (2) 8.6 ppb (8) 10.0 ppb (9) 5.9 ppb (5) 1.0 ppb (1) 42.0 ppb (32) N/A N/A N/A 32.0
 
Sept. 20, 2019, 8 p.m. 14.7 ppb (14) 3.0 ppb (3) 10.6 ppb (10) 12.0 ppb (11) 7.6 ppb (7) 1.0 ppb (1) 44.0 ppb (34) N/A N/A N/A 34.0
 
Sept. 20, 2019, 7 p.m. 20.1 ppb (19) 5.0 ppb (5) 15.5 ppb (14) 15.0 ppb (14) 10.4 ppb (10) 0.0 ppb (0) 37.0 ppb (28) N/A N/A N/A 28.0
 
Sept. 20, 2019, 6 p.m. 22.6 ppb (21) 7.0 ppb (6) 17.3 ppb (16) 16.0 ppb (15) 10.2 ppb (9) 0.0 ppb (0) 29.0 ppb (22) N/A N/A N/A 22.0
 
Sept. 20, 2019, 5 p.m. 27.1 ppb (25) 9.8 ppb (9) 21.0 ppb (19) 17.0 ppb (16) 11.6 ppb (11) 0.0 ppb (0) 20.0 ppb (15) N/A N/A N/A 25.0
 
Sept. 20, 2019, 4 p.m. 30.6 ppb (28) 12.0 ppb (11) 22.8 ppb (21) 19.0 ppb (18) 12.8 ppb (12) 0.0 ppb (0) 16.0 ppb (12) N/A N/A N/A 28.0
 
Sept. 19, 2019, 4 p.m. 12.1 ppb (11) 3.9 ppb (4) 6.6 ppb (6) 8.0 ppb (7) 3.1 ppb (3) 0.0 ppb (0) 26.0 ppb (20) N/A 25.0 μg/m3 (23) 8.0 μg/m3 (33) 33.0
 
Sept. 19, 2019, 3 p.m. 16.8 ppb (16) 5.4 ppb (5) 11.5 ppb (11) 11.0 ppb (10) 6.0 ppb (6) 0.0 ppb (0) 21.0 ppb (16) N/A 23.0 μg/m3 (21) 11.0 μg/m3 (46) 46.0
 
Sept. 19, 2019, 2 p.m. 29.3 ppb (27) 10.3 ppb (10) 20.5 ppb (19) 19.0 ppb (18) 11.4 ppb (11) 0.0 ppb (0) 11.0 ppb (8) N/A 38.0 μg/m3 (35) 10.0 μg/m3 (42) 42.0
 
Sept. 19, 2019, 1 p.m. 20.3 ppb (19) 4.9 ppb (5) 11.6 ppb (11) 15.0 ppb (14) 9.0 ppb (8) 0.0 ppb (0) 11.0 ppb (8) N/A 27.0 μg/m3 (25) 7.0 μg/m3 (29) 29.0
 
Sept. 19, 2019, noon 20.1 ppb (19) 3.9 ppb (4) 14.2 ppb (13) 16.0 ppb (15) 11.8 ppb (11) 0.0 ppb (0) 10.0 ppb (8) N/A 22.0 μg/m3 (20) 7.0 μg/m3 (29) 29.0
 
Sept. 19, 2019, 11 a.m. 17.2 ppb (16) 1.9 ppb (2) 9.2 ppb (9) 15.0 ppb (14) 8.1 ppb (8) 0.0 ppb (0) 11.0 ppb (8) N/A 21.0 μg/m3 (19) 8.0 μg/m3 (33) 33.0
 
Sept. 19, 2019, 10 a.m. 25.4 ppb (24) 5.0 ppb (5) 17.1 ppb (16) 20.0 ppb (19) 13.4 ppb (12) 0.0 ppb (0) 8.0 ppb (6) N/A 24.0 μg/m3 (22) 11.0 μg/m3 (46) 46.0
 
Sept. 19, 2019, 9 a.m. 26.2 ppb (24) 4.5 ppb (4) 15.3 ppb (14) 22.0 ppb (20) 13.7 ppb (13) 0.0 ppb (0) 7.0 ppb (5) N/A 30.0 μg/m3 (27) 14.0 μg/m3 (54) 54.0
 
Sept. 19, 2019, 8 a.m. 25.1 ppb (23) 3.3 ppb (3) 18.9 ppb (18) 22.0 ppb (20) 18.4 ppb (17) 0.0 ppb (0) 10.0 ppb (8) N/A 30.0 μg/m3 (27) 14.0 μg/m3 (54) 54.0
 
Sept. 19, 2019, 7 a.m. 25.2 ppb (23) 2.1 ppb (2) 21.1 ppb (20) 23.0 ppb (21) 20.0 ppb (19) 0.0 ppb (0) 13.0 ppb (10) N/A 38.0 μg/m3 (35) N/A 35.0
 
Sept. 19, 2019, 6 a.m. 15.4 ppb (14) 1.5 ppb (1) 10.3 ppb (10) 14.0 ppb (13) 9.6 ppb (9) 0.0 ppb (0) 23.0 ppb (18) N/A 25.0 μg/m3 (23) 38.0 μg/m3 (106) 106.0
 
Sept. 19, 2019, 5 a.m. 13.9 ppb (13) 0.8 ppb (1) 8.8 ppb (8) 13.0 ppb (12) 8.7 ppb (8) 0.0 ppb (0) 25.0 ppb (19) N/A 25.0 μg/m3 (23) N/A 23.0
 
Sept. 19, 2019, 4 a.m. 12.5 ppb (12) 0.8 ppb (1) 7.6 ppb (7) 12.0 ppb (11) 7.4 ppb (7) 0.0 ppb (0) 26.0 ppb (20) N/A 24.0 μg/m3 (22) 20.0 μg/m3 (67) 67.0
 
Sept. 19, 2019, 3 a.m. 11.5 ppb (11) 0.5 ppb (0) 6.6 ppb (6) 11.0 ppb (10) 6.5 ppb (6) 0.0 ppb (0) 29.0 ppb (22) N/A 24.0 μg/m3 (22) 10.0 μg/m3 (42) 42.0
 
Sept. 19, 2019, 2 a.m. 11.5 ppb (11) 0.4 ppb (0) 6.5 ppb (6) 11.0 ppb (10) 6.3 ppb (6) 0.0 ppb (0) 28.0 ppb (22) N/A 18.0 μg/m3 (16) 6.0 μg/m3 (25) 25.0
 
Sept. 19, 2019, 1 a.m. 8.1 ppb (8) 0.6 ppb (1) 3.8 ppb (4) 8.0 ppb (7) 3.1 ppb (3) 0.0 ppb (0) 33.0 ppb (25) N/A 19.0 μg/m3 (17) 5.0 μg/m3 (21) 25.0
 
Sept. 19, 2019, midnight 7.7 ppb (7) 0.9 ppb (1) 3.6 ppb (3) 7.0 ppb (6) 2.7 ppb (3) 0.0 ppb (0) 39.0 ppb (30) N/A 24.0 μg/m3 (22) 7.0 μg/m3 (29) 30.0
 
Sept. 18, 2019, 11 p.m. N/A N/A 4.6 ppb (4) N/A 3.2 ppb (3) 0.0 ppb (0) N/A N/A N/A N/A 4.0
 
Sept. 18, 2019, 10 p.m. N/A N/A 8.0 ppb (7) N/A 5.6 ppb (5) 1.0 ppb (1) N/A N/A N/A N/A 7.0
 
Sept. 18, 2019, 9 p.m. 13.2 ppb (12) 2.7 ppb (3) 9.3 ppb (9) 11.0 ppb (10) 6.6 ppb (6) 1.0 ppb (1) 41.0 ppb (32) N/A 36.0 μg/m3 (33) 18.0 μg/m3 (63) 63.0
 
Sept. 18, 2019, 8 p.m. 13.9 ppb (13) 2.8 ppb (3) 10.2 ppb (9) 11.0 ppb (10) 7.3 ppb (7) 1.0 ppb (1) 42.0 ppb (32) N/A 35.0 μg/m3 (32) 16.0 μg/m3 (59) 59.0
 
Sept. 18, 2019, 7 p.m. N/A N/A 10.7 ppb (10) N/A 7.5 ppb (7) 1.0 ppb (1) N/A N/A N/A N/A 10.0
 
Sept. 18, 2019, 6 p.m. 23.9 ppb (22) 6.7 ppb (6) 17.9 ppb (17) 17.0 ppb (16) 10.9 ppb (10) 1.0 ppb (1) 32.0 ppb (25) N/A 39.0 μg/m3 (35) 17.0 μg/m3 (61) 61.0
 
Sept. 18, 2019, 5 p.m. 27.9 ppb (26) 9.3 ppb (9) N/A 19.0 ppb (18) N/A 1.0 ppb (1) 27.0 ppb (21) N/A 38.0 μg/m3 (35) N/A 35.0
 
Sept. 18, 2019, 4 p.m. 20.6 ppb (19) 6.8 ppb (6) 14.7 ppb (14) 14.0 ppb (13) 8.4 ppb (8) 1.0 ppb (1) 26.0 ppb (20) N/A N/A N/A 20.0
 
Sept. 18, 2019, 3 p.m. 26.9 ppb (25) 9.1 ppb (8) 19.4 ppb (18) 18.0 ppb (17) 11.9 ppb (11) 1.0 ppb (1) 17.0 ppb (13) N/A 35.0 μg/m3 (32) 15.0 μg/m3 (56) 56.0
 
Sept. 18, 2019, 2 p.m. 71.0 ppb (68) 44.9 ppb (42) 56.6 ppb (53) 26.0 ppb (24) 16.3 ppb (15) 1.0 ppb (1) 4.0 ppb (3) N/A 46.0 μg/m3 (42) 16.0 μg/m3 (59) 68.0
 
Sept. 18, 2019, 1 p.m. 68.7 ppb (66) 42.0 ppb (39) 57.8 ppb (54) 27.0 ppb (25) 12.9 ppb (12) 0.0 ppb (0) 2.0 ppb (2) N/A 39.0 μg/m3 (35) 15.0 μg/m3 (56) 66.0
 
Sept. 18, 2019, noon 41.8 ppb (39) 16.7 ppb (15) 31.8 ppb (29) 25.0 ppb (23) 19.8 ppb (18) 0.0 ppb (0) 2.0 ppb (2) N/A 30.0 μg/m3 (27) 9.0 μg/m3 (38) 39.0
 
Sept. 18, 2019, 11 a.m. 39.4 ppb (36) 13.7 ppb (13) 30.2 ppb (28) 26.0 ppb (24) 18.4 ppb (17) 0.0 ppb (0) 2.0 ppb (2) N/A 27.0 μg/m3 (25) 13.0 μg/m3 (52) 52.0
 
Sept. 18, 2019, 10 a.m. 33.7 ppb (31) 6.8 ppb (6) 28.8 ppb (27) 27.0 ppb (25) 23.6 ppb (22) 0.0 ppb (0) 3.0 ppb (2) N/A 34.0 μg/m3 (31) 13.0 μg/m3 (52) 52.0
 
Sept. 18, 2019, 9 a.m. 31.3 ppb (29) 4.0 ppb (4) 24.4 ppb (23) 27.0 ppb (25) 21.5 ppb (20) 0.0 ppb (0) 4.0 ppb (3) N/A 28.0 μg/m3 (25) 13.0 μg/m3 (52) 52.0
 
Sept. 18, 2019, 8 a.m. 46.8 ppb (43) 13.0 ppb (12) 43.4 ppb (40) 34.0 ppb (31) 30.1 ppb (28) 1.0 ppb (1) 2.0 ppb (2) N/A 35.0 μg/m3 (32) 9.0 μg/m3 (38) 43.0
 
Sept. 18, 2019, 7 a.m. 36.7 ppb (34) 2.4 ppb (2) 33.5 ppb (31) 34.0 ppb (31) 30.2 ppb (28) 1.0 ppb (1) 7.0 ppb (5) N/A 36.0 μg/m3 (33) 8.0 μg/m3 (33) 34.0
 
Sept. 18, 2019, 6 a.m. 25.4 ppb (24) 1.4 ppb (1) 20.2 ppb (19) 24.0 ppb (22) 19.7 ppb (18) 1.0 ppb (1) 17.0 ppb (13) N/A 31.0 μg/m3 (28) 9.0 μg/m3 (38) 38.0
 
Sept. 18, 2019, 5 a.m. 22.2 ppb (21) 1.8 ppb (2) 18.1 ppb (17) 20.0 ppb (19) 16.7 ppb (15) 0.0 ppb (0) 19.0 ppb (15) N/A 30.0 μg/m3 (27) 8.0 μg/m3 (33) 33.0
 
Sept. 18, 2019, 4 a.m. 13.2 ppb (12) 0.7 ppb (1) 9.2 ppb (9) 13.0 ppb (12) 9.2 ppb (9) 0.0 ppb (0) 28.0 ppb (22) N/A 24.0 μg/m3 (22) 11.0 μg/m3 (46) 46.0
 
Sept. 18, 2019, 3 a.m. 11.9 ppb (11) 1.0 ppb (1) 7.2 ppb (7) 11.0 ppb (10) 6.6 ppb (6) 0.0 ppb (0) 28.0 ppb (22) N/A 24.0 μg/m3 (22) 11.0 μg/m3 (46) 46.0
 
Sept. 18, 2019, 2 a.m. 12.0 ppb (11) 1.5 ppb (1) 7.4 ppb (7) 11.0 ppb (10) 6.1 ppb (6) 0.0 ppb (0) 29.0 ppb (22) N/A 24.0 μg/m3 (22) 10.0 μg/m3 (42) 42.0
 
Sept. 18, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 26.0 μg/m3 (24) 33.0 μg/m3 (95) 95.0
 
Sept. 18, 2019, midnight 9.4 ppb (9) 0.7 ppb (1) 6.1 ppb (6) 9.0 ppb (8) 5.3 ppb (5) 1.0 ppb (1) 51.0 ppb (39) N/A 30.0 μg/m3 (27) N/A 39.0
 
Sept. 17, 2019, 11 p.m. 10.2 ppb (9) 1.5 ppb (1) 6.8 ppb (6) 9.0 ppb (8) 5.3 ppb (5) 1.0 ppb (1) 46.0 ppb (35) N/A 27.0 μg/m3 (25) 37.0 μg/m3 (104) 104.0
 
Sept. 17, 2019, 10 p.m. 11.5 ppb (11) 1.9 ppb (2) 8.4 ppb (8) 10.0 ppb (9) 6.4 ppb (6) 1.0 ppb (1) 45.0 ppb (35) N/A 23.0 μg/m3 (21) N/A 35.0
 
Sept. 17, 2019, 9 p.m. 14.9 ppb (14) 2.7 ppb (3) 12.2 ppb (11) 12.0 ppb (11) 9.3 ppb (9) 1.0 ppb (1) 44.0 ppb (34) N/A 37.0 μg/m3 (34) 10.0 μg/m3 (42) 42.0
 
Sept. 17, 2019, 8 p.m. 19.4 ppb (18) 3.6 ppb (3) 16.2 ppb (15) 16.0 ppb (15) 12.4 ppb (11) 1.0 ppb (1) 45.0 ppb (35) N/A 38.0 μg/m3 (35) 41.0 μg/m3 (114) 114.0
 
Sept. 17, 2019, 7 p.m. 20.3 ppb (19) 4.4 ppb (4) 17.2 ppb (16) 16.0 ppb (15) 12.5 ppb (12) 1.0 ppb (1) 42.0 ppb (32) N/A 35.0 μg/m3 (32) 12.0 μg/m3 (50) 50.0
 
Sept. 17, 2019, 6 p.m. 28.4 ppb (26) 8.0 ppb (7) 24.4 ppb (23) 20.0 ppb (19) 16.1 ppb (15) 1.0 ppb (1) 32.0 ppb (25) N/A 41.0 μg/m3 (37) 20.0 μg/m3 (67) 67.0
 
Sept. 17, 2019, 5 p.m. 29.4 ppb (27) 9.4 ppb (9) 25.8 ppb (24) 20.0 ppb (19) 16.0 ppb (15) 1.0 ppb (1) 26.0 ppb (20) N/A 38.0 μg/m3 (35) 16.0 μg/m3 (59) 59.0
 
Sept. 17, 2019, 4 p.m. 26.0 ppb (24) 9.0 ppb (8) 22.0 ppb (20) 17.0 ppb (16) 13.1 ppb (12) 1.0 ppb (1) 21.0 ppb (16) N/A 37.0 μg/m3 (34) 21.0 μg/m3 (69) 69.0
 
Sept. 17, 2019, 3 p.m. 28.4 ppb (26) 12.6 ppb (12) 24.6 ppb (23) 16.0 ppb (15) 13.2 ppb (12) 0.0 ppb (0) 15.0 ppb (12) N/A 33.0 μg/m3 (30) 11.0 μg/m3 (46) 46.0
 
Sept. 17, 2019, 2 p.m. 50.8 ppb (47) 29.8 ppb (28) 39.5 ppb (37) 21.0 ppb (19) 13.7 ppb (13) 0.0 ppb (0) 6.0 ppb (5) N/A 38.0 μg/m3 (35) 17.0 μg/m3 (61) 61.0
 
Sept. 17, 2019, 1 p.m. 51.1 ppb (47) 26.5 ppb (25) 37.4 ppb (35) 25.0 ppb (23) 14.8 ppb (14) 0.0 ppb (0) 2.0 ppb (2) N/A 31.0 μg/m3 (28) 14.0 μg/m3 (54) 54.0
 
Sept. 17, 2019, noon 40.3 ppb (37) 17.6 ppb (16) 28.4 ppb (26) 23.0 ppb (21) 18.6 ppb (17) 0.0 ppb (0) 2.0 ppb (2) N/A 28.0 μg/m3 (25) 11.0 μg/m3 (46) 46.0
 
Sept. 17, 2019, 11 a.m. 36.2 ppb (34) 12.6 ppb (12) 24.3 ppb (23) 24.0 ppb (22) 16.0 ppb (15) 0.0 ppb (0) 3.0 ppb (2) N/A 27.0 μg/m3 (25) 15.0 μg/m3 (56) 56.0
 
Sept. 17, 2019, 10 a.m. 31.2 ppb (29) 8.9 ppb (8) 22.3 ppb (21) 22.0 ppb (20) 18.1 ppb (17) 0.0 ppb (0) 3.0 ppb (2) N/A 22.0 μg/m3 (20) 10.0 μg/m3 (42) 42.0
 
Sept. 17, 2019, 9 a.m. 25.3 ppb (23) 2.9 ppb (3) 18.1 ppb (17) 22.0 ppb (20) 16.6 ppb (15) 0.0 ppb (0) 8.0 ppb (6) N/A 48.0 μg/m3 (44) 13.0 μg/m3 (52) 52.0
 
Sept. 17, 2019, 8 a.m. 27.6 ppb (26) 2.6 ppb (2) 24.7 ppb (23) 25.0 ppb (23) 23.7 ppb (22) 0.0 ppb (0) 9.0 ppb (7) N/A 33.0 μg/m3 (30) 17.0 μg/m3 (61) 61.0
 
Sept. 17, 2019, 7 a.m. 26.6 ppb (25) 2.0 ppb (2) 22.5 ppb (21) 25.0 ppb (23) 22.1 ppb (20) 0.0 ppb (0) 11.0 ppb (8) N/A 41.0 μg/m3 (37) 17.0 μg/m3 (61) 61.0
 
Sept. 17, 2019, 6 a.m. 24.6 ppb (23) 2.5 ppb (2) 19.3 ppb (18) 22.0 ppb (20) 18.2 ppb (17) 1.0 ppb (1) 14.0 ppb (11) N/A 40.0 μg/m3 (36) 10.0 μg/m3 (42) 42.0
 
Sept. 17, 2019, 5 a.m. 13.0 ppb (12) 1.0 ppb (1) 10.8 ppb (10) 12.0 ppb (11) 10.0 ppb (9) 0.0 ppb (0) 21.0 ppb (16) N/A 22.0 μg/m3 (20) 6.0 μg/m3 (25) 25.0
 
Sept. 17, 2019, 4 a.m. 10.2 ppb (9) 1.1 ppb (1) 6.7 ppb (6) 9.0 ppb (8) 5.8 ppb (5) 0.0 ppb (0) 24.0 ppb (18) N/A 19.0 μg/m3 (17) 6.0 μg/m3 (25) 25.0
 
Sept. 17, 2019, 3 a.m. 8.7 ppb (8) 0.6 ppb (1) 5.2 ppb (5) 8.0 ppb (7) 4.9 ppb (5) 0.0 ppb (0) 31.0 ppb (24) N/A 21.0 μg/m3 (19) 11.0 μg/m3 (46) 46.0
 
Sept. 17, 2019, 2 a.m. 7.4 ppb (7) 0.8 ppb (1) 3.7 ppb (3) 7.0 ppb (6) 3.3 ppb (3) 0.0 ppb (0) 36.0 ppb (28) N/A 25.0 μg/m3 (23) 14.0 μg/m3 (54) 54.0
 
Sept. 17, 2019, 1 a.m. 10.5 ppb (10) 1.3 ppb (1) 6.4 ppb (6) 9.0 ppb (8) 5.4 ppb (5) 0.0 ppb (0) 38.0 ppb (29) N/A 27.0 μg/m3 (25) 13.0 μg/m3 (52) 52.0
 
Sept. 17, 2019, midnight 11.7 ppb (11) 1.5 ppb (1) 8.6 ppb (8) 10.0 ppb (9) 7.1 ppb (7) 0.0 ppb (0) 44.0 ppb (34) N/A 28.0 μg/m3 (25) 14.0 μg/m3 (54) 54.0
 
Sept. 16, 2019, 11 p.m. 11.1 ppb (10) 1.3 ppb (1) 8.5 ppb (8) 10.0 ppb (9) 7.0 ppb (6) 0.0 ppb (0) 52.0 ppb (40) N/A 30.0 μg/m3 (27) 16.0 μg/m3 (59) 59.0
 
Sept. 16, 2019, 10 p.m. 13.2 ppb (12) 1.7 ppb (2) 11.0 ppb (10) 12.0 ppb (11) 9.2 ppb (9) 1.0 ppb (1) 55.0 ppb (42) N/A 38.0 μg/m3 (35) 18.0 μg/m3 (63) 63.0
 
Sept. 16, 2019, 9 p.m. 16.9 ppb (16) 2.5 ppb (2) 14.5 ppb (13) 14.0 ppb (13) 11.9 ppb (11) 1.0 ppb (1) 54.0 ppb (42) N/A 43.0 μg/m3 (39) 19.0 μg/m3 (65) 65.0
 
Sept. 16, 2019, 8 p.m. 21.7 ppb (20) 5.1 ppb (5) 18.5 ppb (17) 17.0 ppb (16) 13.3 ppb (12) 1.0 ppb (1) 39.0 ppb (30) N/A 36.0 μg/m3 (33) 13.0 μg/m3 (52) 52.0
 
Sept. 16, 2019, 7 p.m. 24.1 ppb (22) 5.9 ppb (5) 21.7 ppb (20) 18.0 ppb (17) 15.5 ppb (14) 1.0 ppb (1) 39.0 ppb (30) N/A 43.0 μg/m3 (39) 15.0 μg/m3 (56) 56.0
 
Sept. 16, 2019, 6 p.m. 28.0 ppb (26) 8.1 ppb (8) 25.5 ppb (24) 20.0 ppb (19) 17.1 ppb (16) 1.0 ppb (1) 32.0 ppb (25) N/A 43.0 μg/m3 (39) 21.0 μg/m3 (69) 69.0
 
Sept. 16, 2019, 5 p.m. 42.0 ppb (39) 15.8 ppb (15) 38.9 ppb (36) 26.0 ppb (24) 22.4 ppb (21) 1.0 ppb (1) 20.0 ppb (15) N/A 47.0 μg/m3 (43) 24.0 μg/m3 (76) 76.0
 
Sept. 16, 2019, 4 p.m. 48.2 ppb (45) 19.6 ppb (18) 44.1 ppb (41) 29.0 ppb (27) 24.8 ppb (23) 1.0 ppb (1) 11.0 ppb (8) N/A 44.0 μg/m3 (40) 26.0 μg/m3 (80) 80.0
 
Sept. 16, 2019, 3 p.m. 48.3 ppb (45) 22.0 ppb (20) 42.7 ppb (40) 26.0 ppb (24) 21.7 ppb (20) 0.0 ppb (0) 7.0 ppb (5) N/A 48.0 μg/m3 (44) 23.0 μg/m3 (73) 73.0
 
Sept. 16, 2019, 2 p.m. 42.7 ppb (40) 17.2 ppb (16) 36.2 ppb (34) 26.0 ppb (24) 21.3 ppb (20) 0.0 ppb (0) 5.0 ppb (4) N/A 48.0 μg/m3 (44) 21.0 μg/m3 (69) 69.0
 
Sept. 16, 2019, 1 p.m. 39.1 ppb (36) 12.1 ppb (11) 29.9 ppb (28) 27.0 ppb (25) 19.5 ppb (18) 0.0 ppb (0) 2.0 ppb (2) N/A 48.0 μg/m3 (44) 20.0 μg/m3 (67) 67.0
 
Sept. 16, 2019, noon 35.5 ppb (33) 7.3 ppb (7) 26.9 ppb (25) 28.0 ppb (26) 23.8 ppb (22) 0.0 ppb (0) 3.0 ppb (2) N/A 36.0 μg/m3 (33) 17.0 μg/m3 (61) 61.0
 
Sept. 16, 2019, 11 a.m. 33.4 ppb (31) 9.2 ppb (9) 23.1 ppb (21) 24.0 ppb (22) 18.8 ppb (17) 0.0 ppb (0) 4.0 ppb (3) N/A 36.0 μg/m3 (33) 20.0 μg/m3 (67) 67.0
 
Sept. 16, 2019, 10 a.m. 39.1 ppb (36) 14.0 ppb (13) 27.9 ppb (26) 25.0 ppb (23) 22.3 ppb (21) 0.0 ppb (0) 4.0 ppb (3) N/A 31.0 μg/m3 (28) 22.0 μg/m3 (71) 71.0
 
Sept. 16, 2019, 9 a.m. 12.9 ppb (12) 1.8 ppb (2) 11.2 ppb (10) 11.0 ppb (10) 10.7 ppb (10) 0.0 ppb (0) 17.0 ppb (13) N/A 30.0 μg/m3 (27) 19.0 μg/m3 (65) 65.0
 
Sept. 16, 2019, 8 a.m. 16.6 ppb (15) 1.9 ppb (2) 15.8 ppb (15) 15.0 ppb (14) 15.7 ppb (15) 0.0 ppb (0) 17.0 ppb (13) N/A 38.0 μg/m3 (35) 17.0 μg/m3 (61) 61.0
 
Sept. 16, 2019, 7 a.m. 15.3 ppb (14) 1.6 ppb (1) 12.6 ppb (12) 14.0 ppb (13) 12.5 ppb (12) 0.0 ppb (0) 17.0 ppb (13) N/A 31.0 μg/m3 (28) 15.0 μg/m3 (56) 56.0
 
Sept. 16, 2019, 6 a.m. 16.7 ppb (15) 1.5 ppb (1) 15.8 ppb (15) 15.0 ppb (14) 14.8 ppb (14) 0.0 ppb (0) 20.0 ppb (15) N/A 33.0 μg/m3 (30) 15.0 μg/m3 (56) 56.0
 
Sept. 16, 2019, 5 a.m. 14.7 ppb (14) 1.3 ppb (1) 11.8 ppb (11) 13.0 ppb (12) 11.7 ppb (11) 0.0 ppb (0) 18.0 ppb (14) N/A 33.0 μg/m3 (30) 18.0 μg/m3 (63) 63.0
 
Sept. 16, 2019, 4 a.m. 15.2 ppb (14) 1.2 ppb (1) 11.6 ppb (11) 14.0 ppb (13) 11.3 ppb (10) 0.0 ppb (0) 20.0 ppb (15) N/A 34.0 μg/m3 (31) 17.0 μg/m3 (61) 61.0
 
Sept. 16, 2019, 3 a.m. 13.8 ppb (13) 1.0 ppb (1) 10.1 ppb (9) 13.0 ppb (12) 9.9 ppb (9) 0.0 ppb (0) 24.0 ppb (18) N/A 35.0 μg/m3 (32) 15.0 μg/m3 (56) 56.0
 
Sept. 16, 2019, 2 a.m. 12.0 ppb (11) 0.8 ppb (1) 7.8 ppb (7) 11.0 ppb (10) 7.8 ppb (7) 0.0 ppb (0) 31.0 ppb (24) N/A 38.0 μg/m3 (35) 18.0 μg/m3 (63) 63.0
 
Sept. 16, 2019, 1 a.m. 10.8 ppb (10) 0.6 ppb (1) 6.7 ppb (6) 10.0 ppb (9) 6.4 ppb (6) 0.0 ppb (0) 38.0 ppb (29) N/A 42.0 μg/m3 (38) 16.0 μg/m3 (59) 59.0
 
Sept. 16, 2019, midnight 9.5 ppb (9) 0.8 ppb (1) 4.6 ppb (4) 9.0 ppb (8) 3.8 ppb (4) 1.0 ppb (1) 44.0 ppb (34) N/A 34.0 μg/m3 (31) 21.0 μg/m3 (69) 69.0
 
Sept. 15, 2019, 11 p.m. 7.6 ppb (7) 1.0 ppb (1) N/A 7.0 ppb (6) N/A 1.0 ppb (1) 47.0 ppb (36) N/A 33.0 μg/m3 (30) 16.0 μg/m3 (59) 59.0
 
Sept. 15, 2019, 10 p.m. 10.1 ppb (9) 1.0 ppb (1) 8.8 ppb (8) 9.0 ppb (8) 7.8 ppb (7) 1.0 ppb (1) 51.0 ppb (39) N/A 39.0 μg/m3 (35) 24.0 μg/m3 (76) 76.0
 
Sept. 15, 2019, 9 p.m. 24.8 ppb (23) 3.0 ppb (3) 22.5 ppb (21) 22.0 ppb (20) 19.2 ppb (18) 1.0 ppb (1) 55.0 ppb (42) N/A 44.0 μg/m3 (40) 55.0 μg/m3 (149) 149.0
 
Sept. 15, 2019, 8 p.m. 18.1 ppb (17) 2.0 ppb (2) 16.0 ppb (15) 16.0 ppb (15) 13.7 ppb (13) 1.0 ppb (1) 67.0 ppb (52) N/A 40.0 μg/m3 (36) 18.0 μg/m3 (63) 63.0
 
Sept. 15, 2019, 7 p.m. 18.3 ppb (17) 2.5 ppb (2) 16.1 ppb (15) 16.0 ppb (15) 13.6 ppb (13) 1.0 ppb (1) 57.0 ppb (44) N/A 34.0 μg/m3 (31) 20.0 μg/m3 (67) 67.0
 
Sept. 15, 2019, 6 p.m. 28.1 ppb (26) 5.8 ppb (5) 26.0 ppb (24) 22.0 ppb (20) 20.0 ppb (19) 1.0 ppb (1) 45.0 ppb (35) N/A 48.0 μg/m3 (44) 22.0 μg/m3 (71) 71.0
 
Sept. 15, 2019, 5 p.m. 44.3 ppb (41) 14.3 ppb (13) 40.5 ppb (38) 30.0 ppb (28) 26.2 ppb (24) 1.0 ppb (1) 23.0 ppb (18) N/A 61.0 μg/m3 (53) 27.0 μg/m3 (82) 82.0
 
Sept. 15, 2019, 4 p.m. 44.9 ppb (42) 15.6 ppb (14) 40.2 ppb (37) 29.0 ppb (27) 25.3 ppb (23) 1.0 ppb (1) 13.0 ppb (10) N/A 53.0 μg/m3 (48) 26.0 μg/m3 (80) 80.0
 
Sept. 15, 2019, 3 p.m. 53.3 ppb (49) 23.0 ppb (21) 47.2 ppb (44) 30.0 ppb (28) 25.0 ppb (23) 1.0 ppb (1) 7.0 ppb (5) N/A 43.0 μg/m3 (39) 22.0 μg/m3 (71) 71.0
 
Sept. 15, 2019, 2 p.m. 47.2 ppb (44) 21.4 ppb (20) 39.8 ppb (37) 26.0 ppb (24) 21.3 ppb (20) 0.0 ppb (0) 4.0 ppb (3) N/A 52.0 μg/m3 (47) 17.0 μg/m3 (61) 61.0
 
Sept. 15, 2019, 1 p.m. 32.8 ppb (30) 7.6 ppb (7) 25.6 ppb (24) 25.0 ppb (23) 20.5 ppb (19) 0.0 ppb (0) 4.0 ppb (3) N/A 30.0 μg/m3 (27) 16.0 μg/m3 (59) 59.0
 
Sept. 15, 2019, noon 36.8 ppb (34) 8.8 ppb (8) 30.3 ppb (28) 28.0 ppb (26) 24.6 ppb (23) 0.0 ppb (0) 2.0 ppb (2) N/A 32.0 μg/m3 (29) 10.0 μg/m3 (42) 42.0
 
Sept. 15, 2019, 11 a.m. 30.6 ppb (28) 4.9 ppb (5) 23.1 ppb (21) 26.0 ppb (24) 20.5 ppb (19) 0.0 ppb (0) 5.0 ppb (4) N/A 30.0 μg/m3 (27) 39.0 μg/m3 (109) 109.0
 
Sept. 15, 2019, 10 a.m. 42.1 ppb (39) 12.0 ppb (11) 37.1 ppb (34) 30.0 ppb (28) 25.9 ppb (24) 0.0 ppb (0) 2.0 ppb (2) N/A 33.0 μg/m3 (30) 4.0 μg/m3 (17) 39.0
 
Sept. 15, 2019, 9 a.m. 34.5 ppb (32) 5.6 ppb (5) 26.5 ppb (25) 29.0 ppb (27) 23.8 ppb (22) 0.0 ppb (0) 4.0 ppb (3) N/A 34.0 μg/m3 (31) 17.0 μg/m3 (61) 61.0
 
Sept. 15, 2019, 8 a.m. 33.1 ppb (31) 6.0 ppb (6) 27.9 ppb (26) 27.0 ppb (25) 25.0 ppb (23) 0.0 ppb (0) 3.0 ppb (2) N/A 48.0 μg/m3 (44) 18.0 μg/m3 (63) 63.0
 
Sept. 15, 2019, 7 a.m. 31.0 ppb (29) 7.0 ppb (6) 26.1 ppb (24) 24.0 ppb (22) 22.2 ppb (21) 0.0 ppb (0) 5.0 ppb (4) N/A 51.0 μg/m3 (46) 17.0 μg/m3 (61) 61.0
 
Sept. 15, 2019, 6 a.m. 26.0 ppb (24) 2.9 ppb (3) 20.2 ppb (19) 23.0 ppb (21) 19.3 ppb (18) 0.0 ppb (0) 10.0 ppb (8) N/A 45.0 μg/m3 (41) 15.0 μg/m3 (56) 56.0
 
Sept. 15, 2019, 5 a.m. 16.7 ppb (15) 2.5 ppb (2) 13.4 ppb (12) 14.0 ppb (13) 11.7 ppb (11) 0.0 ppb (0) 18.0 ppb (14) N/A 66.0 μg/m3 (56) 12.0 μg/m3 (50) 56.0
 
Sept. 15, 2019, 4 a.m. 14.4 ppb (13) 0.9 ppb (1) 10.3 ppb (10) 13.0 ppb (12) 10.3 ppb (10) 0.0 ppb (0) 24.0 ppb (18) N/A 28.0 μg/m3 (25) 13.0 μg/m3 (52) 52.0
 
Sept. 15, 2019, 3 a.m. 13.1 ppb (12) 0.6 ppb (1) 9.5 ppb (9) 13.0 ppb (12) 9.5 ppb (9) 1.0 ppb (1) 42.0 ppb (32) N/A 36.0 μg/m3 (33) 14.0 μg/m3 (54) 54.0
 
Sept. 15, 2019, 2 a.m. 8.7 ppb (8) 0.3 ppb (0) 5.9 ppb (5) 8.0 ppb (7) 5.9 ppb (5) 1.0 ppb (1) 59.0 ppb (45) N/A 33.0 μg/m3 (30) 10.0 μg/m3 (42) 45.0
 
Sept. 15, 2019, 1 a.m. 7.9 ppb (7) 0.2 ppb (0) 5.0 ppb (5) 8.0 ppb (7) 4.8 ppb (4) 1.0 ppb (1) 61.0 ppb (47) N/A 27.0 μg/m3 (25) 10.0 μg/m3 (42) 47.0
 
Sept. 15, 2019, midnight 7.1 ppb (7) 0.3 ppb (0) 4.8 ppb (4) 7.0 ppb (6) 4.4 ppb (4) 1.0 ppb (1) 71.0 ppb (55) N/A 32.0 μg/m3 (29) 9.0 μg/m3 (38) 55.0
 
Sept. 14, 2019, 11 p.m. 7.2 ppb (7) 0.4 ppb (0) 5.5 ppb (5) 7.0 ppb (6) 5.0 ppb (5) 1.0 ppb (1) 79.0 ppb (62) N/A 29.0 μg/m3 (26) 6.0 μg/m3 (25) 62.0
 
Sept. 14, 2019, 10 p.m. 11.2 ppb (10) 0.7 ppb (1) 9.6 ppb (9) 10.0 ppb (9) 8.8 ppb (8) 1.0 ppb (1) 86.0 ppb (68) N/A 37.0 μg/m3 (34) 17.0 μg/m3 (61) 68.0
 
Sept. 14, 2019, 9 p.m. 14.4 ppb (13) 1.2 ppb (1) 12.4 ppb (11) 13.0 ppb (12) 11.3 ppb (10) 1.0 ppb (1) 79.0 ppb (62) N/A 43.0 μg/m3 (39) 21.0 μg/m3 (69) 69.0
 
Sept. 14, 2019, 8 p.m. 20.4 ppb (19) 1.9 ppb (2) 18.6 ppb (17) 19.0 ppb (18) 16.7 ppb (15) 1.0 ppb (1) 77.0 ppb (60) N/A 52.0 μg/m3 (47) 21.0 μg/m3 (69) 69.0