AQSQID: 401431127

Site Name: Tulsa

Location: Tulsa (E 36th St N), OK

Reporting: True, Located: True

Current AQI: 57.0

Tulsa (E 36th St N) OK, US: 36.206699, -95.976402

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
March 25, 2019, 9 a.m. 2.8 ppb (3) 0.0 ppb (0) 2.9 ppb (3) 3.0 ppb (3) 2.7 ppb (3) 0.0 ppb (0) 25.0 ppb (19) 0.2 ppb (2) 19.0 μg/m3 (17) 15.3 μg/m3 (57) 57.0
 
March 25, 2019, 8 a.m. 3.4 ppb (3) 0.0 ppb (0) 3.1 ppb (3) 3.0 ppb (3) 2.8 ppb (3) 0.0 ppb (0) 27.0 ppb (21) 0.2 ppb (2) 15.0 μg/m3 (14) 11.4 μg/m3 (48) 48.0
 
March 25, 2019, 7 a.m. 3.7 ppb (3) 0.0 ppb (0) 3.3 ppb (3) 4.0 ppb (4) 3.1 ppb (3) 0.0 ppb (0) 28.0 ppb (22) 0.2 ppb (2) 14.0 μg/m3 (13) 10.3 μg/m3 (43) 43.0
 
March 25, 2019, 6 a.m. 7.5 ppb (7) 0.1 ppb (0) 4.7 ppb (4) 7.0 ppb (6) 4.6 ppb (4) 0.0 ppb (0) 24.0 ppb (18) 0.26 ppb (3) 15.0 μg/m3 (14) 11.5 μg/m3 (48) 48.0
 
March 25, 2019, 5 a.m. 11.1 ppb (10) 1.0 ppb (1) 7.0 ppb (6) 10.0 ppb (9) 6.7 ppb (6) 0.0 ppb (0) 18.0 ppb (14) 0.29 ppb (3) 17.0 μg/m3 (15) 10.5 μg/m3 (44) 44.0
 
March 25, 2019, 4 a.m. 5.9 ppb (5) 0.2 ppb (0) 4.8 ppb (4) 6.0 ppb (6) 4.4 ppb (4) 0.0 ppb (0) 32.0 ppb (25) 0.22 ppb (2) 15.0 μg/m3 (14) 10.2 μg/m3 (42) 42.0
 
March 25, 2019, 3 a.m. 4.6 ppb (4) 0.1 ppb (0) 4.2 ppb (4) 5.0 ppb (5) 3.8 ppb (4) 0.0 ppb (0) 38.0 ppb (29) 0.21 ppb (2) 17.0 μg/m3 (15) 11.6 μg/m3 (48) 48.0
 
March 25, 2019, 2 a.m. 3.5 ppb (3) 0.0 ppb (0) 3.1 ppb (3) 4.0 ppb (4) 2.8 ppb (3) 0.0 ppb (0) 44.0 ppb (34) 0.19 ppb (2) 13.0 μg/m3 (12) 8.0 μg/m3 (33) 34.0
 
March 25, 2019, 1 a.m. 6.1 ppb (6) 0.0 ppb (0) 5.4 ppb (5) 6.0 ppb (6) 5.1 ppb (5) 0.0 ppb (0) 40.0 ppb (31) 0.19 ppb (2) 11.0 μg/m3 (10) 6.2 μg/m3 (26) 31.0
 
March 25, 2019, midnight 4.2 ppb (4) 0.0 ppb (0) 3.8 ppb (4) 4.0 ppb (4) 3.6 ppb (3) 0.0 ppb (0) 46.0 ppb (35) 0.18 ppb (2) 10.0 μg/m3 (9) 5.7 μg/m3 (24) 35.0
 
March 24, 2019, 11 p.m. 2.9 ppb (3) 0.0 ppb (0) 2.7 ppb (3) 3.0 ppb (3) 2.4 ppb (2) 0.0 ppb (0) 50.0 ppb (38) 0.17 ppb (2) 10.0 μg/m3 (9) 5.9 μg/m3 (25) 38.0
 
March 24, 2019, 10 p.m. 2.5 ppb (2) 0.0 ppb (0) 2.3 ppb (2) 2.0 ppb (2) 2.0 ppb (2) 0.0 ppb (0) 50.0 ppb (38) 0.17 ppb (2) 10.0 μg/m3 (9) 6.8 μg/m3 (28) 38.0
 
March 24, 2019, 9 p.m. 2.4 ppb (2) 0.0 ppb (0) 2.0 ppb (2) 2.0 ppb (2) 1.7 ppb (2) 0.0 ppb (0) 48.0 ppb (37) 0.17 ppb (2) 11.0 μg/m3 (10) 7.7 μg/m3 (32) 37.0
 
March 24, 2019, 8 p.m. 2.6 ppb (2) 0.1 ppb (0) 2.3 ppb (2) 3.0 ppb (3) 1.9 ppb (2) 0.0 ppb (0) 41.0 ppb (32) 0.18 ppb (2) 15.0 μg/m3 (14) 10.6 μg/m3 (44) 44.0
 
March 24, 2019, 7 p.m. 2.6 ppb (2) 0.0 ppb (0) 2.2 ppb (2) 3.0 ppb (3) 1.9 ppb (2) 0.0 ppb (0) 38.0 ppb (29) 0.18 ppb (2) 15.0 μg/m3 (14) 10.9 μg/m3 (45) 45.0
 
March 24, 2019, 6 p.m. 2.7 ppb (3) 0.1 ppb (0) 2.7 ppb (3) 3.0 ppb (3) 2.2 ppb (2) 0.0 ppb (0) 28.0 ppb (22) 0.2 ppb (2) 22.0 μg/m3 (20) 15.8 μg/m3 (58) 58.0
 
March 24, 2019, 5 p.m. 3.0 ppb (3) 0.2 ppb (0) 3.0 ppb (3) 3.0 ppb (3) 2.4 ppb (2) 0.0 ppb (0) 24.0 ppb (18) 0.21 ppb (2) 24.0 μg/m3 (22) 16.2 μg/m3 (59) 59.0
 
March 24, 2019, 4 p.m. 5.5 ppb (5) 0.4 ppb (0) 4.5 ppb (4) 5.0 ppb (5) 3.8 ppb (4) 0.0 ppb (0) 26.0 ppb (20) 0.2 ppb (2) 27.0 μg/m3 (25) 15.8 μg/m3 (58) 58.0
 
March 24, 2019, 3 p.m. 13.1 ppb (12) 1.1 ppb (1) 11.9 ppb (11) 12.0 ppb (11) 9.9 ppb (9) 0.0 ppb (0) 26.0 ppb (20) 0.22 ppb (2) 24.0 μg/m3 (22) 15.7 μg/m3 (58) 58.0
 
March 24, 2019, 2 p.m. 12.6 ppb (12) 1.0 ppb (1) 11.9 ppb (11) 12.0 ppb (11) 10.2 ppb (9) 0.0 ppb (0) 23.0 ppb (18) 0.23 ppb (3) 23.0 μg/m3 (21) 15.7 μg/m3 (58) 58.0
 
March 24, 2019, 1 p.m. 14.0 ppb (13) 2.0 ppb (2) 12.9 ppb (12) 12.0 ppb (11) 10.7 ppb (10) 0.0 ppb (0) 14.0 ppb (11) 0.29 ppb (3) 22.0 μg/m3 (20) 15.4 μg/m3 (57) 57.0
 
March 24, 2019, noon 11.2 ppb (10) 0.7 ppb (1) 10.7 ppb (10) 10.0 ppb (9) 9.7 ppb (9) 0.0 ppb (0) 15.0 ppb (12) 0.28 ppb (3) 20.0 μg/m3 (18) 14.7 μg/m3 (56) 56.0
 
March 24, 2019, 11 a.m. 11.5 ppb (11) 1.1 ppb (1) 9.0 ppb (8) 10.0 ppb (9) 8.4 ppb (8) 0.0 ppb (0) 18.0 ppb (14) 0.27 ppb (3) 20.0 μg/m3 (18) 14.3 μg/m3 (55) 55.0
 
March 24, 2019, 10 a.m. 6.2 ppb (6) 0.0 ppb (0) 5.7 ppb (5) 6.0 ppb (6) 5.7 ppb (5) 0.0 ppb (0) 31.0 ppb (24) 0.2 ppb (2) 18.0 μg/m3 (16) 13.6 μg/m3 (53) 53.0
 
March 24, 2019, 9 a.m. 4.3 ppb (4) 0.0 ppb (0) 4.0 ppb (4) 4.0 ppb (4) 3.9 ppb (4) 0.0 ppb (0) 35.0 ppb (27) 0.2 ppb (2) 19.0 μg/m3 (17) 14.6 μg/m3 (56) 56.0
 
March 24, 2019, 8 a.m. 3.4 ppb (3) 0.0 ppb (0) 3.0 ppb (3) 3.0 ppb (3) 3.0 ppb (3) 0.0 ppb (0) 41.0 ppb (32) 0.2 ppb (2) 19.0 μg/m3 (17) 14.4 μg/m3 (55) 55.0
 
March 24, 2019, 7 a.m. 3.5 ppb (3) 0.0 ppb (0) 3.0 ppb (3) 4.0 ppb (4) 3.0 ppb (3) 0.0 ppb (0) 44.0 ppb (34) 0.19 ppb (2) 18.0 μg/m3 (16) 14.1 μg/m3 (54) 54.0
 
March 24, 2019, 6 a.m. 4.2 ppb (4) 0.0 ppb (0) 3.6 ppb (3) 4.0 ppb (4) 3.6 ppb (3) 0.0 ppb (0) 44.0 ppb (34) 0.2 ppb (2) 20.0 μg/m3 (18) 15.2 μg/m3 (57) 57.0
 
March 24, 2019, 5 a.m. 5.4 ppb (5) 0.0 ppb (0) 4.5 ppb (4) 5.0 ppb (5) 4.4 ppb (4) 0.0 ppb (0) 42.0 ppb (32) 0.2 ppb (2) 18.0 μg/m3 (16) 13.9 μg/m3 (54) 54.0
 
March 24, 2019, 4 a.m. 8.0 ppb (7) 0.2 ppb (0) 6.8 ppb (6) 8.0 ppb (7) 6.6 ppb (6) 0.0 ppb (0) 31.0 ppb (24) 0.26 ppb (3) 20.0 μg/m3 (18) 15.4 μg/m3 (57) 57.0
 
March 24, 2019, 3 a.m. 7.0 ppb (6) 0.1 ppb (0) 6.3 ppb (6) 7.0 ppb (6) 6.0 ppb (6) 0.0 ppb (0) 34.0 ppb (26) 0.23 ppb (3) 19.0 μg/m3 (17) 14.4 μg/m3 (55) 55.0
 
March 24, 2019, 2 a.m. 5.7 ppb (5) 0.2 ppb (0) 5.0 ppb (5) 5.0 ppb (5) 4.7 ppb (4) 0.0 ppb (0) 39.0 ppb (30) 0.21 ppb (2) 21.0 μg/m3 (19) 15.5 μg/m3 (57) 57.0
 
March 24, 2019, 1 a.m. 6.1 ppb (6) 0.2 ppb (0) 5.3 ppb (5) 6.0 ppb (6) 5.0 ppb (5) 0.0 ppb (0) 42.0 ppb (32) 0.23 ppb (3) 22.0 μg/m3 (20) 15.7 μg/m3 (58) 58.0
 
March 24, 2019, midnight 5.5 ppb (5) 0.1 ppb (0) 4.9 ppb (5) 5.0 ppb (5) 4.5 ppb (4) 0.0 ppb (0) 44.0 ppb (34) 0.21 ppb (2) 19.0 μg/m3 (17) 14.4 μg/m3 (55) 55.0
 
March 23, 2019, 11 p.m. 5.1 ppb (5) 0.1 ppb (0) 4.5 ppb (4) 5.0 ppb (5) 4.3 ppb (4) 0.0 ppb (0) 46.0 ppb (35) 0.21 ppb (2) 18.0 μg/m3 (16) 14.2 μg/m3 (55) 55.0
 
March 23, 2019, 10 p.m. 4.9 ppb (5) 0.0 ppb (0) 4.3 ppb (4) 5.0 ppb (5) 4.0 ppb (4) 0.0 ppb (0) 49.0 ppb (38) 0.2 ppb (2) 17.0 μg/m3 (15) 13.1 μg/m3 (52) 52.0
 
March 23, 2019, 9 p.m. 5.4 ppb (5) 0.0 ppb (0) 4.5 ppb (4) 5.0 ppb (5) 4.4 ppb (4) 0.0 ppb (0) 47.0 ppb (36) 0.21 ppb (2) 16.0 μg/m3 (15) 11.5 μg/m3 (48) 48.0
 
March 23, 2019, 8 p.m. 6.2 ppb (6) 0.0 ppb (0) 5.7 ppb (5) 6.0 ppb (6) 5.5 ppb (5) 0.0 ppb (0) 44.0 ppb (34) 0.22 ppb (2) 18.0 μg/m3 (16) 13.4 μg/m3 (53) 53.0
 
March 23, 2019, 7 p.m. 5.6 ppb (5) 0.1 ppb (0) 4.8 ppb (4) 5.0 ppb (5) 4.5 ppb (4) 0.0 ppb (0) 45.0 ppb (35) 0.21 ppb (2) 19.0 μg/m3 (17) 14.3 μg/m3 (55) 55.0
 
March 23, 2019, 6 p.m. 6.5 ppb (6) 0.3 ppb (0) 5.8 ppb (5) 6.0 ppb (6) 5.2 ppb (5) 0.0 ppb (0) 41.0 ppb (32) 0.22 ppb (2) 20.0 μg/m3 (18) 14.9 μg/m3 (56) 56.0
 
March 23, 2019, 5 p.m. 6.7 ppb (6) 0.3 ppb (0) 5.6 ppb (5) 6.0 ppb (6) 4.9 ppb (5) 0.0 ppb (0) 42.0 ppb (32) 0.22 ppb (2) 22.0 μg/m3 (20) 16.7 μg/m3 (60) 60.0
 
March 23, 2019, 4 p.m. 10.1 ppb (9) 0.5 ppb (0) 8.8 ppb (8) 10.0 ppb (9) 8.1 ppb (8) 0.0 ppb (0) 32.0 ppb (25) 0.27 ppb (3) 33.0 μg/m3 (30) 26.2 μg/m3 (80) 80.0
 
March 23, 2019, 3 p.m. 12.1 ppb (11) 0.9 ppb (1) 11.3 ppb (10) 11.0 ppb (10) 10.2 ppb (9) 0.0 ppb (0) 22.0 ppb (17) 0.32 ppb (4) 45.0 μg/m3 (41) 37.4 μg/m3 (105) 105.0
 
March 23, 2019, 2 p.m. 10.8 ppb (10) 0.7 ppb (1) 10.2 ppb (9) 10.0 ppb (9) 9.1 ppb (8) 0.0 ppb (0) 26.0 ppb (20) 0.32 ppb (4) 47.0 μg/m3 (43) 39.3 μg/m3 (110) 110.0
 
March 23, 2019, 1 p.m. 14.1 ppb (13) 0.6 ppb (1) 12.9 ppb (12) 14.0 ppb (13) 12.0 ppb (11) 0.0 ppb (0) 28.0 ppb (22) 0.34 ppb (4) 57.0 μg/m3 (51) 45.9 μg/m3 (126) 126.0
 
March 23, 2019, noon 15.3 ppb (14) 1.3 ppb (1) 15.1 ppb (14) 14.0 ppb (13) 13.5 ppb (12) 0.0 ppb (0) 24.0 ppb (18) 0.34 ppb (4) 59.0 μg/m3 (52) 45.1 μg/m3 (124) 124.0
 
March 23, 2019, 11 a.m. 8.6 ppb (8) 0.3 ppb (0) 9.4 ppb (9) 8.0 ppb (7) 9.0 ppb (8) 0.0 ppb (0) 25.0 ppb (19) 0.32 ppb (4) 52.0 μg/m3 (47) 40.9 μg/m3 (114) 114.0
 
March 23, 2019, 10 a.m. 6.9 ppb (6) 0.3 ppb (0) 6.7 ppb (6) 7.0 ppb (6) 6.2 ppb (6) 0.0 ppb (0) 36.0 ppb (28) 0.28 ppb (3) 47.0 μg/m3 (43) 34.4 μg/m3 (98) 98.0
 
March 23, 2019, 9 a.m. 6.2 ppb (6) 0.1 ppb (0) 6.1 ppb (6) 6.0 ppb (6) 5.9 ppb (5) 0.0 ppb (0) 41.0 ppb (32) 0.26 ppb (3) 41.0 μg/m3 (37) 30.1 μg/m3 (89) 89.0
 
March 23, 2019, 8 a.m. 7.2 ppb (7) 0.1 ppb (0) 6.8 ppb (6) 7.0 ppb (6) 6.6 ppb (6) 0.0 ppb (0) 40.0 ppb (31) 0.26 ppb (3) 34.0 μg/m3 (31) 23.0 μg/m3 (73) 73.0
 
March 23, 2019, 7 a.m. 18.0 ppb (17) 1.2 ppb (1) 13.1 ppb (12) 17.0 ppb (16) 12.6 ppb (12) 0.0 ppb (0) 23.0 ppb (18) 0.39 ppb (4) 39.0 μg/m3 (35) 20.7 μg/m3 (69) 69.0
 
March 23, 2019, 6 a.m. 34.7 ppb (32) 9.1 ppb (8) 34.2 ppb (32) 26.0 ppb (24) 24.5 ppb (23) 0.0 ppb (0) 1.0 ppb (1) 0.57 ppb (6) 42.0 μg/m3 (38) 16.9 μg/m3 (60) 60.0
 
March 23, 2019, 5 a.m. 32.4 ppb (30) 4.7 ppb (4) 34.1 ppb (32) 28.0 ppb (26) 27.7 ppb (26) 0.0 ppb (0) 2.0 ppb (2) 0.58 ppb (6) 55.0 μg/m3 (50) 17.1 μg/m3 (61) 61.0
 
March 23, 2019, 4 a.m. 40.4 ppb (37) 10.9 ppb (10) 33.6 ppb (31) 29.0 ppb (27) 26.5 ppb (25) 0.0 ppb (0) 4.0 ppb (3) 0.59 ppb (7) 44.0 μg/m3 (40) 15.6 μg/m3 (58) 58.0
 
March 23, 2019, 3 a.m. 49.4 ppb (46) 11.3 ppb (10) 50.1 ppb (46) 38.0 ppb (35) 36.7 ppb (34) 0.0 ppb (0) 2.0 ppb (2) 0.65 ppb (7) 34.0 μg/m3 (31) 13.9 μg/m3 (54) 54.0
 
March 23, 2019, 2 a.m. 38.5 ppb (36) 5.4 ppb (5) 50.4 ppb (47) 33.0 ppb (31) 39.9 ppb (37) 0.0 ppb (0) 11.0 ppb (8) 0.54 ppb (6) 29.0 μg/m3 (26) 13.2 μg/m3 (53) 53.0
 
March 23, 2019, 1 a.m. 27.5 ppb (25) 1.1 ppb (1) 20.8 ppb (19) 26.0 ppb (24) 20.0 ppb (19) 0.0 ppb (0) 22.0 ppb (17) 0.44 ppb (5) 28.0 μg/m3 (25) 10.9 μg/m3 (45) 45.0
 
March 23, 2019, midnight 12.6 ppb (12) 0.4 ppb (0) 10.0 ppb (9) 12.0 ppb (11) 9.2 ppb (9) 0.0 ppb (0) 46.0 ppb (35) 0.27 ppb (3) 23.0 μg/m3 (21) 9.0 μg/m3 (38) 38.0
 
March 22, 2019, 11 p.m. 6.6 ppb (6) 0.2 ppb (0) 6.5 ppb (6) 6.0 ppb (6) 5.7 ppb (5) 0.0 ppb (0) 57.0 ppb (44) 0.23 ppb (3) 20.0 μg/m3 (18) 10.4 μg/m3 (43) 44.0
 
March 22, 2019, 10 p.m. 7.2 ppb (7) 0.2 ppb (0) 7.2 ppb (7) 7.0 ppb (6) 6.3 ppb (6) 0.0 ppb (0) 62.0 ppb (48) 0.23 ppb (3) 24.0 μg/m3 (22) 11.5 μg/m3 (48) 48.0
 
March 22, 2019, 9 p.m. 8.0 ppb (7) 0.2 ppb (0) 8.2 ppb (8) 8.0 ppb (7) 7.2 ppb (7) 0.0 ppb (0) 66.0 ppb (51) 0.24 ppb (3) 28.0 μg/m3 (25) 15.6 μg/m3 (58) 58.0
 
March 22, 2019, 8 p.m. 8.1 ppb (8) 0.2 ppb (0) 9.1 ppb (8) 8.0 ppb (7) 7.8 ppb (7) 0.0 ppb (0) 71.0 ppb (55) 0.24 ppb (3) 33.0 μg/m3 (30) 22.5 μg/m3 (72) 72.0
 
March 22, 2019, 7 p.m. 7.2 ppb (7) 0.1 ppb (0) 8.3 ppb (8) 7.0 ppb (6) 7.3 ppb (7) 1.0 ppb (1) 71.0 ppb (55) 0.23 ppb (3) 35.0 μg/m3 (32) 25.2 μg/m3 (78) 78.0
 
March 22, 2019, 6 p.m. 6.6 ppb (6) 0.1 ppb (0) 7.0 ppb (6) 6.0 ppb (6) 6.0 ppb (6) 1.0 ppb (1) 63.0 ppb (48) 0.22 ppb (2) 33.0 μg/m3 (30) 23.0 μg/m3 (73) 73.0
 
March 22, 2019, 5 p.m. 6.7 ppb (6) 0.3 ppb (0) 7.5 ppb (7) 6.0 ppb (6) 6.0 ppb (6) 1.0 ppb (1) 56.0 ppb (43) 0.22 ppb (2) 30.0 μg/m3 (27) 17.4 μg/m3 (61) 61.0
 
March 22, 2019, 4 p.m. 21.4 ppb (20) 2.8 ppb (3) 20.0 ppb (19) 19.0 ppb (18) 14.1 ppb (13) 0.0 ppb (0) 39.0 ppb (30) 0.31 ppb (3) 35.0 μg/m3 (32) 18.4 μg/m3 (64) 64.0
 
March 22, 2019, 3 p.m. 27.9 ppb (26) 5.4 ppb (5) 28.1 ppb (26) 22.0 ppb (20) 18.9 ppb (18) 1.0 ppb (1) 24.0 ppb (18) 0.38 ppb (4) 52.0 μg/m3 (47) 24.5 μg/m3 (77) 77.0
 
March 22, 2019, 2 p.m. 31.1 ppb (29) 11.6 ppb (11) 28.7 ppb (27) 20.0 ppb (19) 15.2 ppb (14) 0.0 ppb (0) 13.0 ppb (10) 0.44 ppb (5) 42.0 μg/m3 (38) 19.0 μg/m3 (65) 65.0
 
March 22, 2019, 1 p.m. 76.9 ppb (74) 57.1 ppb (53) 76.9 ppb (74) 20.0 ppb (19) 20.5 ppb (19) 1.0 ppb (1) 1.0 ppb (1) 0.77 ppb (9) 41.0 μg/m3 (37) 17.5 μg/m3 (62) 74.0
 
March 22, 2019, noon 46.5 ppb (43) 30.7 ppb (28) 52.4 ppb (49) 16.0 ppb (15) 17.4 ppb (16) 0.0 ppb (0) 0.0 ppb (0) 0.68 ppb (8) 32.0 μg/m3 (29) 15.1 μg/m3 (57) 57.0
 
March 22, 2019, 11 a.m. 28.7 ppb (27) 13.8 ppb (13) 29.7 ppb (28) 15.0 ppb (14) 17.0 ppb (16) 0.0 ppb (0) 0.0 ppb (0) 0.44 ppb (5) 28.0 μg/m3 (25) 15.1 μg/m3 (57) 57.0
 
March 22, 2019, 10 a.m. 28.7 ppb (27) 13.8 ppb (13) 29.8 ppb (28) 15.0 ppb (14) 14.6 ppb (14) 0.0 ppb (0) 0.0 ppb (0) 0.55 ppb (6) 27.0 μg/m3 (25) 14.8 μg/m3 (56) 56.0
 
March 22, 2019, 9 a.m. 28.7 ppb (27) 13.0 ppb (12) 28.8 ppb (27) 16.0 ppb (15) 15.9 ppb (15) 0.0 ppb (0) 0.0 ppb (0) 0.53 ppb (6) 25.0 μg/m3 (23) 12.8 μg/m3 (52) 52.0
 
March 22, 2019, 8 a.m. 22.6 ppb (21) 5.8 ppb (5) 23.9 ppb (22) 17.0 ppb (16) 17.4 ppb (16) 0.0 ppb (0) 1.0 ppb (1) 0.39 ppb (4) 26.0 μg/m3 (24) 13.2 μg/m3 (53) 53.0
 
March 22, 2019, 7 a.m. 25.9 ppb (24) 9.5 ppb (9) 25.8 ppb (24) 16.0 ppb (15) 16.3 ppb (15) 0.0 ppb (0) 3.0 ppb (2) 0.45 ppb (5) 27.0 μg/m3 (25) 12.6 μg/m3 (51) 51.0
 
March 22, 2019, 6 a.m. 43.5 ppb (40) 20.4 ppb (19) 38.7 ppb (36) 23.0 ppb (21) 21.5 ppb (20) 0.0 ppb (0) 0.0 ppb (0) 0.57 ppb (6) 27.0 μg/m3 (25) 11.3 μg/m3 (47) 47.0
 
March 22, 2019, 5 a.m. 38.2 ppb (35) 14.4 ppb (13) 39.9 ppb (37) 24.0 ppb (22) 24.1 ppb (22) 0.0 ppb (0) 1.0 ppb (1) 0.52 ppb (6) 25.0 μg/m3 (23) 11.0 μg/m3 (46) 46.0
 
March 22, 2019, 4 a.m. 26.7 ppb (25) 5.8 ppb (5) 31.5 ppb (29) 21.0 ppb (19) 22.2 ppb (21) 0.0 ppb (0) 4.0 ppb (3) 0.4 ppb (4) 29.0 μg/m3 (26) 11.5 μg/m3 (48) 48.0
 
March 22, 2019, 3 a.m. 29.0 ppb (27) 5.9 ppb (5) 28.8 ppb (27) 23.0 ppb (21) 21.8 ppb (20) 0.0 ppb (0) 5.0 ppb (4) 0.41 ppb (5) 25.0 μg/m3 (23) 11.6 μg/m3 (48) 48.0
 
March 22, 2019, 2 a.m. 30.2 ppb (28) 1.5 ppb (1) 33.5 ppb (31) 29.0 ppb (27) 27.9 ppb (26) 0.0 ppb (0) 8.0 ppb (6) 0.46 ppb (5) 29.0 μg/m3 (26) 11.4 μg/m3 (48) 48.0
 
March 22, 2019, 1 a.m. 26.6 ppb (25) 2.4 ppb (2) 34.4 ppb (32) 24.0 ppb (22) 26.9 ppb (25) 0.0 ppb (0) 21.0 ppb (16) 0.38 ppb (4) 22.0 μg/m3 (20) 9.0 μg/m3 (38) 38.0
 
March 22, 2019, midnight 16.9 ppb (16) 0.9 ppb (1) 16.0 ppb (15) 16.0 ppb (15) 14.2 ppb (13) 0.0 ppb (0) 34.0 ppb (26) 0.29 ppb (3) 18.0 μg/m3 (16) 6.9 μg/m3 (29) 29.0
 
March 21, 2019, 11 p.m. 5.4 ppb (5) 0.2 ppb (0) 6.0 ppb (6) 5.0 ppb (5) 5.0 ppb (5) 0.0 ppb (0) 52.0 ppb (40) 0.22 ppb (2) 22.0 μg/m3 (20) 13.6 μg/m3 (53) 53.0
 
March 21, 2019, 10 p.m. 4.9 ppb (5) 0.1 ppb (0) 6.0 ppb (6) 5.0 ppb (5) 5.3 ppb (5) 1.0 ppb (1) 62.0 ppb (48) 0.23 ppb (3) 30.0 μg/m3 (27) 21.5 μg/m3 (70) 70.0
 
March 21, 2019, 9 p.m. 2.3 ppb (2) 0.0 ppb (0) 2.9 ppb (3) 2.0 ppb (2) 2.5 ppb (2) 0.0 ppb (0) 56.0 ppb (43) 0.18 ppb (2) 17.0 μg/m3 (15) 10.1 μg/m3 (42) 43.0
 
March 21, 2019, 8 p.m. 1.7 ppb (2) 0.0 ppb (0) 2.2 ppb (2) 2.0 ppb (2) 1.9 ppb (2) 0.0 ppb (0) 53.0 ppb (41) 0.17 ppb (2) 12.0 μg/m3 (11) 5.8 μg/m3 (24) 41.0
 
March 21, 2019, 7 p.m. 1.6 ppb (1) 0.0 ppb (0) 1.9 ppb (2) 2.0 ppb (2) 1.7 ppb (2) 0.0 ppb (0) 51.0 ppb (39) 0.17 ppb (2) 13.0 μg/m3 (12) 7.5 μg/m3 (31) 39.0
 
March 21, 2019, 6 p.m. 2.4 ppb (2) 0.1 ppb (0) 2.8 ppb (3) 2.0 ppb (2) 2.4 ppb (2) 0.0 ppb (0) 50.0 ppb (38) 0.17 ppb (2) 14.0 μg/m3 (13) 8.7 μg/m3 (36) 38.0
 
March 21, 2019, 5 p.m. 3.2 ppb (3) 0.3 ppb (0) 3.6 ppb (3) 3.0 ppb (3) 2.8 ppb (3) 0.0 ppb (0) 46.0 ppb (35) 0.17 ppb (2) 12.0 μg/m3 (11) 6.0 μg/m3 (25) 35.0
 
March 21, 2019, 4 p.m. 3.9 ppb (4) 0.4 ppb (0) 4.0 ppb (4) 4.0 ppb (4) 3.0 ppb (3) 0.0 ppb (0) 43.0 ppb (33) 0.17 ppb (2) 12.0 μg/m3 (11) 7.4 μg/m3 (31) 33.0
 
March 21, 2019, 3 p.m. 5.8 ppb (5) 0.8 ppb (1) 5.4 ppb (5) 5.0 ppb (5) 3.5 ppb (3) 0.0 ppb (0) 39.0 ppb (30) 0.18 ppb (2) 14.0 μg/m3 (13) 8.0 μg/m3 (33) 33.0
 
March 21, 2019, 2 p.m. 12.0 ppb (11) 4.5 ppb (4) 8.2 ppb (8) 7.0 ppb (6) 2.7 ppb (3) 0.0 ppb (0) 33.0 ppb (25) 0.18 ppb (2) 17.0 μg/m3 (15) 8.9 μg/m3 (37) 37.0
 
March 21, 2019, 1 p.m. 7.4 ppb (7) 0.7 ppb (1) 6.4 ppb (6) 7.0 ppb (6) 5.3 ppb (5) 0.0 ppb (0) 33.0 ppb (25) 0.19 ppb (2) 17.0 μg/m3 (15) 8.9 μg/m3 (37) 37.0
 
March 21, 2019, noon 5.2 ppb (5) 0.3 ppb (0) 4.9 ppb (5) 5.0 ppb (5) 4.3 ppb (4) 0.0 ppb (0) 34.0 ppb (26) 0.2 ppb (2) 15.0 μg/m3 (14) 8.0 μg/m3 (33) 33.0
 
March 21, 2019, 11 a.m. 3.2 ppb (3) 0.0 ppb (0) 3.0 ppb (3) 3.0 ppb (3) 2.8 ppb (3) 0.0 ppb (0) 37.0 ppb (28) 0.18 ppb (2) 14.0 μg/m3 (13) 7.0 μg/m3 (29) 29.0
 
March 21, 2019, 10 a.m. 4.0 ppb (4) 0.0 ppb (0) 3.5 ppb (3) 4.0 ppb (4) 3.3 ppb (3) 0.0 ppb (0) 38.0 ppb (29) 0.18 ppb (2) 15.0 μg/m3 (14) 8.9 μg/m3 (37) 37.0
 
March 21, 2019, 9 a.m. 4.7 ppb (4) 0.0 ppb (0) 4.5 ppb (4) 5.0 ppb (5) 4.4 ppb (4) 0.0 ppb (0) 38.0 ppb (29) 0.21 ppb (2) 19.0 μg/m3 (17) 11.6 μg/m3 (48) 48.0
 
March 21, 2019, 8 a.m. 5.8 ppb (5) 0.0 ppb (0) 4.9 ppb (5) 6.0 ppb (6) 4.8 ppb (4) 0.0 ppb (0) 40.0 ppb (31) 0.19 ppb (2) 16.0 μg/m3 (15) 7.9 μg/m3 (33) 33.0
 
March 21, 2019, 7 a.m. 14.7 ppb (14) 2.9 ppb (3) 11.4 ppb (11) 12.0 ppb (11) 10.5 ppb (10) 0.0 ppb (0) 26.0 ppb (20) 0.25 ppb (3) 16.0 μg/m3 (15) 7.7 μg/m3 (32) 32.0
 
March 21, 2019, 6 a.m. 8.1 ppb (8) 0.0 ppb (0) 7.5 ppb (7) 8.0 ppb (7) 7.4 ppb (7) 0.0 ppb (0) 34.0 ppb (26) 0.22 ppb (2) 14.0 μg/m3 (13) 7.0 μg/m3 (29) 29.0
 
March 21, 2019, 5 a.m. 11.8 ppb (11) 0.0 ppb (0) 9.6 ppb (9) 12.0 ppb (11) 9.5 ppb (9) 0.0 ppb (0) 30.0 ppb (23) 0.28 ppb (3) 17.0 μg/m3 (15) 7.9 μg/m3 (33) 33.0
 
March 21, 2019, 4 a.m. 23.3 ppb (22) 0.7 ppb (1) 16.5 ppb (15) 23.0 ppb (21) 16.4 ppb (15) 0.0 ppb (0) 16.0 ppb (12) 0.4 ppb (4) 18.0 μg/m3 (16) 10.0 μg/m3 (42) 42.0
 
March 21, 2019, 3 a.m. 30.4 ppb (28) 0.9 ppb (1) 25.9 ppb (24) 29.0 ppb (27) 25.4 ppb (24) 0.0 ppb (0) 8.0 ppb (6) 0.43 ppb (5) 17.0 μg/m3 (15) 7.3 μg/m3 (30) 30.0
 
March 21, 2019, 2 a.m. 17.7 ppb (16) 0.1 ppb (0) 13.8 ppb (13) 18.0 ppb (17) 13.7 ppb (13) 0.0 ppb (0) 23.0 ppb (18) 0.35 ppb (4) 13.0 μg/m3 (12) 7.3 μg/m3 (30) 30.0
 
March 21, 2019, 1 a.m. 5.5 ppb (5) 0.0 ppb (0) 5.5 ppb (5) 6.0 ppb (6) 5.4 ppb (5) 0.0 ppb (0) 45.0 ppb (35) 0.2 ppb (2) 11.0 μg/m3 (10) 6.1 μg/m3 (25) 35.0
 
March 21, 2019, midnight 2.8 ppb (3) 0.0 ppb (0) 3.0 ppb (3) 3.0 ppb (3) 2.9 ppb (3) 0.0 ppb (0) 51.0 ppb (39) 0.17 ppb (2) 11.0 μg/m3 (10) 6.0 μg/m3 (25) 39.0
 
March 20, 2019, 11 p.m. 2.2 ppb (2) 0.0 ppb (0) 2.5 ppb (2) 2.0 ppb (2) 2.3 ppb (2) 0.0 ppb (0) 53.0 ppb (41) 0.17 ppb (2) 10.0 μg/m3 (9) 5.7 μg/m3 (24) 41.0
 
March 20, 2019, 10 p.m. 2.1 ppb (2) 0.0 ppb (0) 2.4 ppb (2) 2.0 ppb (2) 2.0 ppb (2) 0.0 ppb (0) 53.0 ppb (41) 0.17 ppb (2) 9.0 μg/m3 (8) 4.8 μg/m3 (20) 41.0
 
March 20, 2019, 9 p.m. 2.1 ppb (2) 0.0 ppb (0) 2.2 ppb (2) 2.0 ppb (2) 1.9 ppb (2) 0.0 ppb (0) 52.0 ppb (40) 0.17 ppb (2) 9.0 μg/m3 (8) 4.9 μg/m3 (20) 40.0
 
March 20, 2019, 8 p.m. 2.1 ppb (2) 0.0 ppb (0) 2.2 ppb (2) 2.0 ppb (2) 1.9 ppb (2) 0.0 ppb (0) 52.0 ppb (40) 0.17 ppb (2) 8.0 μg/m3 (7) 4.6 μg/m3 (19) 40.0
 
March 20, 2019, 7 p.m. 2.0 ppb (2) 0.0 ppb (0) 2.0 ppb (2) 2.0 ppb (2) 1.7 ppb (2) 0.0 ppb (0) 51.0 ppb (39) 0.17 ppb (2) 7.0 μg/m3 (6) 3.9 μg/m3 (16) 39.0
 
March 20, 2019, 6 p.m. 2.2 ppb (2) 0.0 ppb (0) 2.2 ppb (2) 2.0 ppb (2) 1.9 ppb (2) 0.0 ppb (0) 50.0 ppb (38) 0.17 ppb (2) 8.0 μg/m3 (7) 4.2 μg/m3 (18) 38.0
 
March 20, 2019, 5 p.m. 2.3 ppb (2) 0.0 ppb (0) 2.3 ppb (2) 2.0 ppb (2) 2.0 ppb (2) 0.0 ppb (0) 47.0 ppb (36) 0.17 ppb (2) 8.0 μg/m3 (7) 5.4 μg/m3 (23) 36.0
 
March 20, 2019, 4 p.m. 2.6 ppb (2) 0.1 ppb (0) 2.5 ppb (2) 3.0 ppb (3) 2.1 ppb (2) 0.0 ppb (0) 43.0 ppb (33) 0.18 ppb (2) 9.0 μg/m3 (8) 6.4 μg/m3 (27) 33.0
 
March 20, 2019, 3 p.m. 3.7 ppb (3) 0.2 ppb (0) 3.6 ppb (3) 4.0 ppb (4) 3.1 ppb (3) 0.0 ppb (0) 36.0 ppb (28) 0.18 ppb (2) 14.0 μg/m3 (13) 10.8 μg/m3 (45) 45.0
 
March 20, 2019, 2 p.m. 3.7 ppb (3) 0.1 ppb (0) 3.6 ppb (3) 4.0 ppb (4) 3.2 ppb (3) 0.0 ppb (0) 33.0 ppb (25) 0.19 ppb (2) 16.0 μg/m3 (15) 13.0 μg/m3 (52) 52.0
 
March 20, 2019, 1 p.m. 4.2 ppb (4) 0.1 ppb (0) 4.0 ppb (4) 4.0 ppb (4) 3.7 ppb (3) 0.0 ppb (0) 31.0 ppb (24) 0.21 ppb (2) 19.0 μg/m3 (17) 14.1 μg/m3 (54) 54.0
 
March 20, 2019, noon 4.1 ppb (4) 0.0 ppb (0) 4.3 ppb (4) 4.0 ppb (4) 4.1 ppb (4) 0.0 ppb (0) 28.0 ppb (22) 0.2 ppb (2) 19.0 μg/m3 (17) 16.1 μg/m3 (59) 59.0
 
March 20, 2019, 11 a.m. 3.6 ppb (3) 0.0 ppb (0) 3.7 ppb (3) 4.0 ppb (4) 3.5 ppb (3) 0.0 ppb (0) 28.0 ppb (22) 0.2 ppb (2) 20.0 μg/m3 (18) 16.8 μg/m3 (60) 60.0
 
March 20, 2019, 10 a.m. 3.0 ppb (3) 0.0 ppb (0) 3.2 ppb (3) 3.0 ppb (3) 3.0 ppb (3) 0.0 ppb (0) 30.0 ppb (23) 0.19 ppb (2) 19.0 μg/m3 (17) 15.9 μg/m3 (58) 58.0
 
March 20, 2019, 9 a.m. 2.6 ppb (2) 0.0 ppb (0) 2.6 ppb (2) 3.0 ppb (3) 2.5 ppb (2) 0.0 ppb (0) 33.0 ppb (25) 0.17 ppb (2) 19.0 μg/m3 (17) 15.2 μg/m3 (57) 57.0
 
March 20, 2019, 8 a.m. 2.6 ppb (2) 0.0 ppb (0) 2.5 ppb (2) 3.0 ppb (3) 2.5 ppb (2) 0.0 ppb (0) 35.0 ppb (27) 0.17 ppb (2) 20.0 μg/m3 (18) 15.6 μg/m3 (58) 58.0
 
March 20, 2019, 7 a.m. 3.0 ppb (3) 0.0 ppb (0) 2.7 ppb (3) 3.0 ppb (3) 2.6 ppb (2) 0.0 ppb (0) 31.0 ppb (24) 0.16 ppb (2) 14.0 μg/m3 (13) 10.3 μg/m3 (43) 43.0
 
March 20, 2019, 6 a.m. 4.6 ppb (4) 0.0 ppb (0) 4.2 ppb (4) 5.0 ppb (5) 4.1 ppb (4) 0.0 ppb (0) 39.0 ppb (30) 0.18 ppb (2) 14.0 μg/m3 (13) 7.1 μg/m3 (30) 30.0
 
March 20, 2019, 5 a.m. 5.1 ppb (5) 0.0 ppb (0) 4.4 ppb (4) 5.0 ppb (5) 4.3 ppb (4) 0.0 ppb (0) 43.0 ppb (33) 0.17 ppb (2) 14.0 μg/m3 (13) 7.0 μg/m3 (29) 33.0
 
March 20, 2019, 4 a.m. 4.0 ppb (4) 0.0 ppb (0) 3.5 ppb (3) 4.0 ppb (4) 3.5 ppb (3) 0.0 ppb (0) 45.0 ppb (35) 0.17 ppb (2) 16.0 μg/m3 (15) 7.1 μg/m3 (30) 35.0
 
March 20, 2019, 3 a.m. 4.7 ppb (4) 0.0 ppb (0) 3.8 ppb (4) 5.0 ppb (5) 3.7 ppb (3) 0.0 ppb (0) 48.0 ppb (37) 0.19 ppb (2) 24.0 μg/m3 (22) 11.6 μg/m3 (48) 48.0
 
March 20, 2019, 2 a.m. 7.3 ppb (7) 0.0 ppb (0) 7.2 ppb (7) 7.0 ppb (6) 7.1 ppb (7) 0.0 ppb (0) 56.0 ppb (43) 0.24 ppb (3) 30.0 μg/m3 (27) 16.8 μg/m3 (60) 60.0
 
March 20, 2019, 1 a.m. 8.4 ppb (8) 0.0 ppb (0) 8.2 ppb (8) 8.0 ppb (7) 8.2 ppb (8) 0.0 ppb (0) 56.0 ppb (43) 0.26 ppb (3) 31.0 μg/m3 (28) 18.5 μg/m3 (64) 64.0
 
March 20, 2019, midnight 6.1 ppb (6) 0.0 ppb (0) 6.2 ppb (6) 6.0 ppb (6) 6.2 ppb (6) 0.0 ppb (0) 59.0 ppb (45) 0.23 ppb (3) 27.0 μg/m3 (25) 14.6 μg/m3 (56) 56.0
 
March 19, 2019, 11 p.m. 4.9 ppb (5) 0.0 ppb (0) 4.8 ppb (4) 5.0 ppb (5) 4.7 ppb (4) 1.0 ppb (1) 61.0 ppb (47) 0.2 ppb (2) 28.0 μg/m3 (25) 13.1 μg/m3 (52) 52.0
 
March 19, 2019, 10 p.m. 4.4 ppb (4) 0.0 ppb (0) 4.2 ppb (4) 4.0 ppb (4) 4.0 ppb (4) 1.0 ppb (1) 61.0 ppb (47) 0.2 ppb (2) 30.0 μg/m3 (27) 13.8 μg/m3 (54) 54.0
 
March 19, 2019, 9 p.m. 4.2 ppb (4) 0.0 ppb (0) 4.1 ppb (4) 4.0 ppb (4) 3.7 ppb (3) 1.0 ppb (1) 60.0 ppb (46) 0.19 ppb (2) 32.0 μg/m3 (29) 12.6 μg/m3 (51) 51.0
 
March 19, 2019, 8 p.m. 3.5 ppb (3) 0.0 ppb (0) 3.5 ppb (3) 4.0 ppb (4) 3.1 ppb (3) 1.0 ppb (1) 60.0 ppb (46) 0.19 ppb (2) 35.0 μg/m3 (32) 12.8 μg/m3 (52) 52.0
 
March 19, 2019, 7 p.m. 5.9 ppb (5) 2.3 ppb (2) N/A 4.0 ppb (4) N/A N/A 59.0 ppb (45) 0.18 ppb (2) 49.0 μg/m3 (45) 13.0 μg/m3 (52) 52.0
 
March 19, 2019, 6 p.m. 7.0 ppb (6) 2.6 ppb (2) N/A 4.0 ppb (4) N/A N/A 57.0 ppb (44) 0.19 ppb (2) 34.0 μg/m3 (31) 12.9 μg/m3 (52) 52.0
 
March 19, 2019, 5 p.m. 5.3 ppb (5) 0.2 ppb (0) N/A 5.0 ppb (5) N/A N/A 54.0 ppb (42) 0.2 ppb (2) 33.0 μg/m3 (30) 13.8 μg/m3 (54) 54.0
 
March 19, 2019, 4 p.m. 5.8 ppb (5) 0.3 ppb (0) N/A 5.0 ppb (5) N/A N/A 47.0 ppb (36) 0.21 ppb (2) 39.0 μg/m3 (35) 15.9 μg/m3 (58) 58.0
 
March 19, 2019, 3 p.m. 8.5 ppb (8) 0.9 ppb (1) N/A 8.0 ppb (7) N/A N/A 42.0 ppb (32) 0.21 ppb (2) 41.0 μg/m3 (37) 16.9 μg/m3 (60) 60.0
 
March 19, 2019, 2 p.m. 12.9 ppb (12) 1.1 ppb (1) N/A 12.0 ppb (11) N/A N/A 35.0 ppb (27) 0.26 ppb (3) 35.0 μg/m3 (32) 21.5 μg/m3 (70) 70.0
 
March 19, 2019, 1 p.m. 31.0 ppb (29) 5.5 ppb (5) 24.4 ppb (23) 26.0 ppb (24) 20.0 ppb (19) 1.0 ppb (1) 19.0 ppb (15) 0.38 ppb (4) 54.0 μg/m3 (49) 32.9 μg/m3 (94) 94.0
 
March 19, 2019, noon 29.7 ppb (28) 5.6 ppb (5) 18.9 ppb (18) 24.0 ppb (22) 17.7 ppb (16) 1.0 ppb (1) 14.0 ppb (11) 0.45 ppb (5) 61.0 μg/m3 (53) 42.7 μg/m3 (118) 118.0
 
March 19, 2019, 11 a.m. 26.5 ppb (25) 4.3 ppb (4) 17.5 ppb (16) 22.0 ppb (20) 17.1 ppb (16) 1.0 ppb (1) 16.0 ppb (12) 0.42 ppb (5) 62.0 μg/m3 (54) 45.4 μg/m3 (125) 125.0
 
March 19, 2019, 10 a.m. 9.5 ppb (9) 0.1 ppb (0) 9.9 ppb (9) 9.0 ppb (8) 9.7 ppb (9) 1.0 ppb (1) 34.0 ppb (26) 0.31 ppb (3) 58.0 μg/m3 (52) 45.7 μg/m3 (126) 126.0
 
March 19, 2019, 9 a.m. 21.0 ppb (19) 4.6 ppb (4) 17.9 ppb (17) 16.0 ppb (15) 14.3 ppb (13) 1.0 ppb (1) 10.0 ppb (8) 0.41 ppb (5) 40.0 μg/m3 (36) 28.9 μg/m3 (86) 86.0
 
March 19, 2019, 8 a.m. 25.0 ppb (23) 7.3 ppb (7) 22.0 ppb (20) 18.0 ppb (17) 17.5 ppb (16) 1.0 ppb (1) 1.0 ppb (1) 0.4 ppb (4) 39.0 μg/m3 (35) 26.3 μg/m3 (80) 80.0
 
March 19, 2019, 7 a.m. 21.0 ppb (19) 1.6 ppb (1) 22.9 ppb (21) 19.0 ppb (18) 19.9 ppb (18) 1.0 ppb (1) 4.0 ppb (3) 0.38 ppb (4) 41.0 μg/m3 (37) 27.2 μg/m3 (82) 82.0
 
March 19, 2019, 6 a.m. 19.9 ppb (18) 0.9 ppb (1) 18.9 ppb (18) 19.0 ppb (18) 18.1 ppb (17) 1.0 ppb (1) 5.0 ppb (4) 0.37 ppb (4) 45.0 μg/m3 (41) 29.3 μg/m3 (87) 87.0
 
March 19, 2019, 5 a.m. 23.7 ppb (22) 1.4 ppb (1) 24.4 ppb (23) 22.0 ppb (20) 22.7 ppb (21) 1.0 ppb (1) 8.0 ppb (6) 0.42 ppb (5) 47.0 μg/m3 (43) 31.9 μg/m3 (92) 92.0
 
March 19, 2019, 4 a.m. 22.8 ppb (21) 0.8 ppb (1) 27.3 ppb (25) 22.0 ppb (20) 24.0 ppb (22) 1.0 ppb (1) 16.0 ppb (12) 0.43 ppb (5) 49.0 μg/m3 (45) 33.4 μg/m3 (96) 96.0
 
March 19, 2019, 3 a.m. 21.3 ppb (20) 0.2 ppb (0) 20.8 ppb (19) 21.0 ppb (19) 20.1 ppb (19) 1.0 ppb (1) 24.0 ppb (18) 0.39 ppb (4) 54.0 μg/m3 (49) 37.5 μg/m3 (105) 105.0
 
March 19, 2019, 2 a.m. 17.1 ppb (16) 0.3 ppb (0) 20.3 ppb (19) 17.0 ppb (16) 19.1 ppb (18) 1.0 ppb (1) 39.0 ppb (30) 0.36 ppb (4) 50.0 μg/m3 (45) 33.2 μg/m3 (95) 95.0
 
March 19, 2019, 1 a.m. 21.1 ppb (20) 0.9 ppb (1) 18.4 ppb (17) 20.0 ppb (19) 16.9 ppb (16) 1.0 ppb (1) 36.0 ppb (28) 0.37 ppb (4) 33.0 μg/m3 (30) 17.7 μg/m3 (62) 62.0
 
March 19, 2019, midnight 12.8 ppb (12) 0.3 ppb (0) 10.9 ppb (10) 13.0 ppb (12) 10.2 ppb (9) 1.0 ppb (1) 48.0 ppb (37) 0.25 ppb (3) 23.0 μg/m3 (21) 12.5 μg/m3 (51) 51.0
 
March 18, 2019, 11 p.m. 7.5 ppb (7) 0.2 ppb (0) 6.9 ppb (6) 7.0 ppb (6) 6.0 ppb (6) 1.0 ppb (1) 58.0 ppb (45) 0.23 ppb (3) 23.0 μg/m3 (21) 12.5 μg/m3 (51) 51.0
 
March 18, 2019, 10 p.m. 5.0 ppb (5) 0.1 ppb (0) 5.4 ppb (5) 5.0 ppb (5) 4.8 ppb (4) 1.0 ppb (1) 61.0 ppb (47) 0.21 ppb (2) 21.0 μg/m3 (19) 12.3 μg/m3 (51) 51.0
 
March 18, 2019, 9 p.m. 4.3 ppb (4) 0.1 ppb (0) 4.8 ppb (4) 4.0 ppb (4) 4.3 ppb (4) 1.0 ppb (1) 61.0 ppb (47) 0.21 ppb (2) 22.0 μg/m3 (20) 12.7 μg/m3 (51) 51.0
 
March 18, 2019, 8 p.m. 4.7 ppb (4) 0.1 ppb (0) 5.2 ppb (5) 5.0 ppb (5) 4.4 ppb (4) 1.0 ppb (1) 59.0 ppb (45) 0.2 ppb (2) 23.0 μg/m3 (21) 12.8 μg/m3 (52) 52.0
 
March 18, 2019, 7 p.m. 4.9 ppb (5) 0.2 ppb (0) 5.1 ppb (5) 5.0 ppb (5) 4.2 ppb (4) 1.0 ppb (1) 57.0 ppb (44) 0.2 ppb (2) 24.0 μg/m3 (22) 13.2 μg/m3 (53) 53.0
 
March 18, 2019, 6 p.m. 5.2 ppb (5) 0.2 ppb (0) 5.3 ppb (5) 5.0 ppb (5) 4.3 ppb (4) 1.0 ppb (1) 56.0 ppb (43) 0.22 ppb (2) 26.0 μg/m3 (24) 16.2 μg/m3 (59) 59.0
 
March 18, 2019, 5 p.m. 5.7 ppb (5) 0.3 ppb (0) 6.1 ppb (6) 5.0 ppb (5) 5.0 ppb (5) 1.0 ppb (1) 52.0 ppb (40) 0.23 ppb (3) 28.0 μg/m3 (25) 17.5 μg/m3 (62) 62.0
 
March 18, 2019, 4 p.m. 7.0 ppb (6) 0.6 ppb (1) 7.2 ppb (7) 6.0 ppb (6) 5.8 ppb (5) 1.0 ppb (1) 46.0 ppb (35) 0.23 ppb (3) 29.0 μg/m3 (26) 17.9 μg/m3 (63) 63.0
 
March 18, 2019, 3 p.m. 11.8 ppb (11) 1.6 ppb (1) 10.9 ppb (10) 10.0 ppb (9) 7.9 ppb (7) 1.0 ppb (1) 36.0 ppb (28) 0.23 ppb (3) 46.0 μg/m3 (42) 15.0 μg/m3 (56) 56.0
 
March 15, 2019, 11 a.m. 2.1 ppb (2) 0.0 ppb (0) 1.8 ppb (2) 2.0 ppb (2) 1.7 ppb (2) 1.0 ppb (1) 37.0 ppb (28) 0.19 ppb (2) 5.0 μg/m3 (5) 1.7 μg/m3 (7) 28.0
 
March 15, 2019, 10 a.m. 1.5 ppb (1) 0.0 ppb (0) 1.3 ppb (1) 2.0 ppb (2) 1.2 ppb (1) 1.0 ppb (1) 39.0 ppb (30) 0.19 ppb (2) 3.0 μg/m3 (3) 1.6 μg/m3 (7) 30.0
 
March 15, 2019, 9 a.m. 1.5 ppb (1) 0.0 ppb (0) 1.3 ppb (1) 2.0 ppb (2) 1.2 ppb (1) 1.0 ppb (1) 40.0 ppb (31) 0.19 ppb (2) 5.0 μg/m3 (5) 1.7 μg/m3 (7) 31.0
 
March 15, 2019, 8 a.m. 1.5 ppb (1) 0.0 ppb (0) 1.3 ppb (1) 2.0 ppb (2) 1.2 ppb (1) 1.0 ppb (1) 41.0 ppb (32) 0.18 ppb (2) 5.0 μg/m3 (5) 1.7 μg/m3 (7) 32.0
 
March 15, 2019, 7 a.m. 1.4 ppb (1) 0.0 ppb (0) 1.1 ppb (1) 1.0 ppb (1) 1.1 ppb (1) 1.0 ppb (1) 42.0 ppb (32) 0.18 ppb (2) 5.0 μg/m3 (5) 1.8 μg/m3 (8) 32.0