ID: 688

AQSQID: 401091037

Site Name: North Okc

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

Updated: April 11, 2021, 3:43 a.m.

Location: Edmond (University House), OK

Reporting: True, Located: True

Current AQI: 44.0

Edmond (University House) OK, US: 35.612801, -97.472198

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
April 11, 2021, 2 a.m. 13.0 ppb (13) 0.0 ppb (0) N/A 13.0 ppb (13) N/A 0.0 ppb (0) 25.0 ppb (24) 0.5 ppb (6) 21.0 μg/m3 (20) 10.5 μg/m3 (44) 44.0
 
April 11, 2021, 1 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 43.0 ppb (40) 0.3 ppb (4) 21.0 μg/m3 (20) 7.9 μg/m3 (33) 40.0
 
April 11, 2021, midnight 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 50.0 ppb (47) 0.3 ppb (4) 18.0 μg/m3 (17) 6.9 μg/m3 (29) 47.0
 
April 10, 2021, 11 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 51.0 ppb (48) 0.3 ppb (4) 17.0 μg/m3 (16) 6.5 μg/m3 (28) 48.0
 
April 10, 2021, 10 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 50.0 ppb (47) 0.3 ppb (4) 18.0 μg/m3 (17) 7.1 μg/m3 (30) 47.0
 
April 10, 2021, 9 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 49.0 ppb (46) 0.3 ppb (4) 18.0 μg/m3 (17) 6.8 μg/m3 (29) 46.0
 
April 10, 2021, 8 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 47.0 ppb (44) 0.3 ppb (4) 16.0 μg/m3 (15) 6.5 μg/m3 (28) 44.0
 
April 10, 2021, 7 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 45.0 ppb (42) 0.3 ppb (4) 16.0 μg/m3 (15) 6.3 μg/m3 (27) 42.0
 
April 10, 2021, 6 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 44.0 ppb (41) 0.3 ppb (4) 14.0 μg/m3 (13) 6.3 μg/m3 (27) 41.0
 
April 10, 2021, 5 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 44.0 ppb (41) 0.3 ppb (4) 17.0 μg/m3 (16) 6.9 μg/m3 (29) 41.0
 
April 10, 2021, 4 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 42.0 ppb (39) 0.3 ppb (4) 17.0 μg/m3 (16) 6.7 μg/m3 (28) 39.0
 
April 10, 2021, 3 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 38.0 ppb (36) 0.3 ppb (4) 13.0 μg/m3 (13) 5.4 μg/m3 (23) 36.0
 
April 10, 2021, 2 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 35.0 ppb (33) 0.3 ppb (4) 9.0 μg/m3 (9) 4.2 μg/m3 (18) 33.0
 
April 10, 2021, 1 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 33.0 ppb (31) 0.3 ppb (4) 8.0 μg/m3 (8) 3.6 μg/m3 (16) 31.0
 
April 10, 2021, noon 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 33.0 ppb (31) 0.3 ppb (4) 7.0 μg/m3 (7) 3.3 μg/m3 (14) 31.0
 
April 10, 2021, 11 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 31.0 ppb (29) 0.3 ppb (4) 6.0 μg/m3 (6) 3.3 μg/m3 (14) 29.0
 
April 10, 2021, 10 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 25.0 ppb (24) 0.3 ppb (4) 7.0 μg/m3 (7) 3.8 μg/m3 (16) 24.0
 
April 10, 2021, 9 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 25.0 ppb (24) 0.3 ppb (4) 8.0 μg/m3 (8) 4.0 μg/m3 (17) 24.0
 
April 10, 2021, 8 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 26.0 ppb (25) 0.3 ppb (4) 9.0 μg/m3 (9) 4.4 μg/m3 (19) 25.0
 
April 10, 2021, 7 a.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 30.0 ppb (28) 0.3 ppb (4) 9.0 μg/m3 (9) 5.1 μg/m3 (22) 28.0
 
April 10, 2021, 6 a.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 33.0 ppb (31) 0.3 ppb (4) 9.0 μg/m3 (9) 4.7 μg/m3 (20) 31.0
 
April 10, 2021, 5 a.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 39.0 ppb (37) 0.3 ppb (4) 12.0 μg/m3 (12) 5.4 μg/m3 (23) 37.0
 
April 10, 2021, 4 a.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 44.0 ppb (41) 0.3 ppb (4) 13.0 μg/m3 (13) 5.3 μg/m3 (23) 41.0
 
April 10, 2021, 3 a.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 47.0 ppb (44) 0.3 ppb (4) 16.0 μg/m3 (15) 5.5 μg/m3 (23) 44.0
 
April 10, 2021, 2 a.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 46.0 ppb (43) 0.3 ppb (4) 27.0 μg/m3 (25) 7.4 μg/m3 (31) 43.0
 
April 10, 2021, 1 a.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 44.0 ppb (41) 0.3 ppb (4) 39.0 μg/m3 (37) 8.8 μg/m3 (37) 41.0
 
April 10, 2021, midnight 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 39.0 ppb (37) 0.3 ppb (4) 78.0 μg/m3 (63) 12.1 μg/m3 (51) 63.0
 
April 9, 2021, 11 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 37.0 ppb (35) 0.3 ppb (4) 86.0 μg/m3 (67) 19.9 μg/m3 (68) 68.0
 
April 9, 2021, 10 p.m. 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 41.0 ppb (38) 0.4 ppb (5) 53.0 μg/m3 (50) 29.1 μg/m3 (87) 87.0
 
April 9, 2021, 9 p.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 42.0 ppb (39) 0.4 ppb (5) 50.0 μg/m3 (47) 29.0 μg/m3 (87) 87.0
 
April 9, 2021, 8 p.m. 3.0 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 38.0 ppb (36) 0.4 ppb (5) 48.0 μg/m3 (45) 28.1 μg/m3 (85) 85.0
 
April 9, 2021, 7 p.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 36.0 ppb (34) 0.4 ppb (5) 47.0 μg/m3 (44) 27.8 μg/m3 (85) 85.0
 
April 9, 2021, 6 p.m. 4.0 ppb (4) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 38.0 ppb (36) 0.4 ppb (5) 55.0 μg/m3 (51) 28.4 μg/m3 (86) 86.0
 
April 9, 2021, 5 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 38.0 ppb (36) 0.4 ppb (5) 45.0 μg/m3 (42) 27.7 μg/m3 (84) 84.0
 
April 9, 2021, 4 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.4 ppb (5) 47.0 μg/m3 (44) 26.6 μg/m3 (82) 82.0
 
April 9, 2021, 3 p.m. 4.0 ppb (4) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A 44.0 μg/m3 (41) 23.9 μg/m3 (76) 76.0
 
April 9, 2021, 2 p.m. 10.0 ppb (10) 1.0 ppb (1) N/A 8.0 ppb (8) N/A 0.0 ppb (0) 31.0 ppb (29) 0.5 ppb (6) 42.0 μg/m3 (39) 19.0 μg/m3 (66) 66.0
 
April 9, 2021, 1 p.m. 11.0 ppb (11) 1.0 ppb (1) N/A 10.0 ppb (10) N/A 0.0 ppb (0) 31.0 ppb (29) 0.5 ppb (6) 38.0 μg/m3 (36) 16.1 μg/m3 (60) 60.0
 
April 9, 2021, noon 6.0 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 39.0 ppb (37) 0.4 ppb (5) 32.0 μg/m3 (30) 14.0 μg/m3 (55) 55.0
 
April 9, 2021, 11 a.m. 8.0 ppb (8) 0.0 ppb (0) N/A 8.0 ppb (8) N/A 0.0 ppb (0) 39.0 ppb (37) 0.4 ppb (5) 30.0 μg/m3 (28) 13.3 μg/m3 (54) 54.0
 
April 9, 2021, 10 a.m. 6.0 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 43.0 ppb (40) 0.4 ppb (5) 33.0 μg/m3 (31) 12.7 μg/m3 (53) 53.0
 
April 9, 2021, 9 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 48.0 ppb (45) 0.3 ppb (4) 33.0 μg/m3 (31) 11.4 μg/m3 (48) 48.0
 
April 9, 2021, 8 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 51.0 ppb (48) 0.3 ppb (4) 34.0 μg/m3 (32) 10.2 μg/m3 (43) 48.0
 
April 9, 2021, 7 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 55.0 ppb (51) 0.3 ppb (4) 37.0 μg/m3 (35) 9.5 μg/m3 (40) 51.0
 
April 9, 2021, 6 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 55.0 ppb (51) 0.3 ppb (4) 38.0 μg/m3 (36) 10.2 μg/m3 (43) 51.0
 
April 9, 2021, 5 a.m. 6.0 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 51.0 ppb (48) 0.3 ppb (4) 44.0 μg/m3 (41) 14.8 μg/m3 (57) 57.0
 
April 9, 2021, 4 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 50.0 ppb (47) 0.3 ppb (4) 39.0 μg/m3 (37) 13.2 μg/m3 (54) 54.0
 
April 9, 2021, 3 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 50.0 ppb (47) 0.3 ppb (4) 41.0 μg/m3 (38) 9.1 μg/m3 (38) 47.0
 
April 9, 2021, 2 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 50.0 ppb (47) 0.3 ppb (4) 35.0 μg/m3 (33) 7.7 μg/m3 (33) 47.0
 
April 9, 2021, 1 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 52.0 ppb (49) 0.3 ppb (4) 31.0 μg/m3 (29) 7.3 μg/m3 (31) 49.0
 
April 9, 2021, midnight 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 53.0 ppb (50) 0.3 ppb (4) 30.0 μg/m3 (28) 7.7 μg/m3 (33) 50.0
 
April 8, 2021, 11 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 55.0 ppb (51) 0.3 ppb (4) 32.0 μg/m3 (30) 8.0 μg/m3 (34) 51.0
 
April 8, 2021, 10 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 54.0 ppb (50) 0.3 ppb (4) 30.0 μg/m3 (28) 7.3 μg/m3 (31) 50.0
 
April 8, 2021, 9 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 55.0 ppb (51) 0.3 ppb (4) 26.0 μg/m3 (25) 7.0 μg/m3 (30) 51.0
 
April 8, 2021, 8 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 55.0 ppb (51) 0.3 ppb (4) 31.0 μg/m3 (29) 6.9 μg/m3 (29) 51.0
 
April 8, 2021, 7 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 55.0 ppb (51) 0.3 ppb (4) 27.0 μg/m3 (25) 6.7 μg/m3 (28) 51.0
 
April 8, 2021, 6 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 52.0 ppb (49) 0.3 ppb (4) 28.0 μg/m3 (26) 6.8 μg/m3 (29) 49.0
 
April 8, 2021, 5 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 51.0 ppb (48) 0.2 ppb (3) 36.0 μg/m3 (34) 7.3 μg/m3 (31) 48.0
 
April 8, 2021, 4 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 48.0 ppb (45) 0.2 ppb (3) 33.0 μg/m3 (31) 7.8 μg/m3 (33) 45.0
 
April 8, 2021, 3 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (42) 0.3 ppb (4) 33.0 μg/m3 (31) 8.0 μg/m3 (34) 42.0
 
April 8, 2021, 2 p.m. 3.0 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 38.0 ppb (36) 0.3 ppb (4) 40.0 μg/m3 (38) 8.5 μg/m3 (36) 38.0
 
April 8, 2021, 1 p.m. 8.0 ppb (8) 1.0 ppb (1) N/A 7.0 ppb (7) N/A 0.0 ppb (0) 32.0 ppb (30) 0.3 ppb (4) 31.0 μg/m3 (29) 7.4 μg/m3 (31) 31.0
 
April 8, 2021, noon 9.0 ppb (9) 0.0 ppb (0) N/A 8.0 ppb (8) N/A 0.0 ppb (0) 29.0 ppb (27) 0.3 ppb (4) 23.0 μg/m3 (22) 6.8 μg/m3 (29) 29.0
 
April 8, 2021, 11 a.m. 5.0 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 34.0 ppb (32) 0.3 ppb (4) 18.0 μg/m3 (17) 6.1 μg/m3 (26) 32.0
 
April 8, 2021, 10 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 36.0 ppb (34) 0.3 ppb (4) 19.0 μg/m3 (18) 6.3 μg/m3 (27) 34.0
 
April 8, 2021, 9 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 36.0 ppb (34) 0.3 ppb (4) 17.0 μg/m3 (16) 6.0 μg/m3 (25) 34.0
 
April 8, 2021, 8 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 37.0 ppb (35) 0.3 ppb (4) 18.0 μg/m3 (17) 6.3 μg/m3 (27) 35.0
 
April 8, 2021, 7 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 39.0 ppb (37) 0.3 ppb (4) 18.0 μg/m3 (17) 6.3 μg/m3 (27) 37.0
 
April 8, 2021, 6 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 40.0 ppb (38) 0.3 ppb (4) 15.0 μg/m3 (14) 5.8 μg/m3 (25) 38.0
 
April 8, 2021, 5 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 37.0 ppb (35) 0.3 ppb (4) 18.0 μg/m3 (17) 6.2 μg/m3 (26) 35.0
 
April 8, 2021, 4 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 38.0 ppb (36) 0.3 ppb (4) 17.0 μg/m3 (16) 6.0 μg/m3 (25) 36.0
 
April 8, 2021, 3 a.m. 5.0 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 31.0 ppb (29) 0.3 ppb (4) 25.0 μg/m3 (24) 8.9 μg/m3 (38) 38.0
 
April 8, 2021, 2 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 33.0 ppb (31) 0.3 ppb (4) 26.0 μg/m3 (25) 8.7 μg/m3 (37) 37.0
 
April 8, 2021, 1 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 34.0 ppb (32) 0.3 ppb (4) 19.0 μg/m3 (18) 6.5 μg/m3 (28) 32.0
 
April 8, 2021, midnight 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 39.0 ppb (37) 0.3 ppb (4) 15.0 μg/m3 (14) 5.8 μg/m3 (25) 37.0
 
April 7, 2021, 11 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 41.0 ppb (38) 0.3 ppb (4) 13.0 μg/m3 (13) 4.7 μg/m3 (20) 38.0
 
April 7, 2021, 10 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 39.0 ppb (37) 0.3 ppb (4) 17.0 μg/m3 (16) 4.6 μg/m3 (20) 37.0
 
April 7, 2021, 9 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 39.0 ppb (37) 0.3 ppb (4) 21.0 μg/m3 (20) 4.8 μg/m3 (20) 37.0
 
April 7, 2021, 8 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 40.0 ppb (38) 0.3 ppb (4) 23.0 μg/m3 (22) 4.0 μg/m3 (17) 38.0
 
April 7, 2021, 7 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 41.0 ppb (38) 0.3 ppb (4) 25.0 μg/m3 (24) 4.1 μg/m3 (18) 38.0
 
April 7, 2021, 6 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 43.0 ppb (40) 0.3 ppb (4) 34.0 μg/m3 (32) 5.2 μg/m3 (22) 40.0
 
April 7, 2021, 5 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 43.0 ppb (40) 0.3 ppb (4) 28.0 μg/m3 (26) 4.3 μg/m3 (18) 40.0
 
April 7, 2021, 4 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 41.0 ppb (38) 0.3 ppb (4) 27.0 μg/m3 (25) 3.9 μg/m3 (17) 38.0
 
April 7, 2021, 3 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 37.0 ppb (35) 0.3 ppb (4) 21.0 μg/m3 (20) 4.0 μg/m3 (17) 35.0
 
April 7, 2021, 2 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 30.0 ppb (28) 0.3 ppb (4) 20.0 μg/m3 (19) 4.0 μg/m3 (17) 28.0
 
April 7, 2021, 1 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 27.0 ppb (25) 0.3 ppb (4) 20.0 μg/m3 (19) 3.8 μg/m3 (16) 25.0
 
April 7, 2021, noon 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 27.0 ppb (25) 0.3 ppb (4) 22.0 μg/m3 (21) 4.5 μg/m3 (19) 25.0
 
April 7, 2021, 11 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 26.0 ppb (25) 0.3 ppb (4) 33.0 μg/m3 (31) 6.1 μg/m3 (26) 31.0
 
April 7, 2021, 10 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 23.0 ppb (22) 0.3 ppb (4) 42.0 μg/m3 (39) 9.4 μg/m3 (40) 40.0
 
April 7, 2021, 9 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 23.0 ppb (22) 0.3 ppb (4) 53.0 μg/m3 (50) 12.6 μg/m3 (53) 53.0
 
April 7, 2021, 8 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 29.0 ppb (27) 0.3 ppb (4) 39.0 μg/m3 (37) 15.7 μg/m3 (59) 59.0
 
April 7, 2021, 7 a.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 32.0 ppb (30) 0.4 ppb (5) 30.0 μg/m3 (28) 14.4 μg/m3 (56) 56.0
 
April 7, 2021, 6 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 34.0 ppb (32) 0.4 ppb (5) 29.0 μg/m3 (27) 13.1 μg/m3 (54) 54.0
 
April 7, 2021, 5 a.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 36.0 ppb (34) 0.4 ppb (5) 33.0 μg/m3 (31) 12.4 μg/m3 (52) 52.0
 
April 7, 2021, 4 a.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 37.0 ppb (35) 0.4 ppb (5) 31.0 μg/m3 (29) 12.4 μg/m3 (52) 52.0
 
April 7, 2021, 3 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 40.0 ppb (38) 0.4 ppb (5) 33.0 μg/m3 (31) 13.2 μg/m3 (54) 54.0
 
April 7, 2021, 2 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 43.0 ppb (40) 0.4 ppb (5) 36.0 μg/m3 (34) 14.2 μg/m3 (56) 56.0
 
April 7, 2021, 1 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (42) 0.4 ppb (5) 39.0 μg/m3 (37) 13.8 μg/m3 (55) 55.0
 
April 7, 2021, midnight 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 46.0 ppb (43) 0.4 ppb (5) 41.0 μg/m3 (38) 14.1 μg/m3 (56) 56.0
 
April 6, 2021, 11 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 46.0 ppb (43) 0.4 ppb (5) 51.0 μg/m3 (48) 14.6 μg/m3 (57) 57.0
 
April 6, 2021, 10 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 47.0 ppb (44) 0.4 ppb (5) 59.0 μg/m3 (53) 15.2 μg/m3 (58) 58.0
 
April 6, 2021, 9 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (42) 0.4 ppb (5) 67.0 μg/m3 (57) 15.0 μg/m3 (58) 58.0
 
April 6, 2021, 8 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 44.0 ppb (41) 0.3 ppb (4) 51.0 μg/m3 (48) 13.9 μg/m3 (55) 55.0
 
April 6, 2021, 7 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 43.0 ppb (40) 0.4 ppb (5) 75.0 μg/m3 (61) 14.7 μg/m3 (57) 61.0
 
April 6, 2021, 6 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 42.0 ppb (39) 0.4 ppb (5) 46.0 μg/m3 (43) 12.1 μg/m3 (51) 51.0
 
April 6, 2021, 5 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 38.0 ppb (36) 0.4 ppb (5) 50.0 μg/m3 (47) 11.7 μg/m3 (49) 49.0
 
April 6, 2021, 4 p.m. 3.0 ppb (3) 1.0 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 35.0 ppb (33) 0.4 ppb (5) N/A N/A 33.0
 
April 6, 2021, 3 p.m. 3.0 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 32.0 ppb (30) 0.3 ppb (4) 27.0 μg/m3 (25) 9.6 μg/m3 (40) 40.0
 
April 6, 2021, 2 p.m. 3.0 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 31.0 ppb (29) 0.4 ppb (5) 31.0 μg/m3 (29) 10.1 μg/m3 (43) 43.0
 
April 6, 2021, 1 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 31.0 ppb (29) 0.3 ppb (4) 25.0 μg/m3 (24) 10.1 μg/m3 (43) 43.0
 
April 6, 2021, noon 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 31.0 ppb (29) 0.3 ppb (4) 21.0 μg/m3 (20) 9.8 μg/m3 (41) 41.0
 
April 6, 2021, 11 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 31.0 ppb (29) 0.3 ppb (4) 19.0 μg/m3 (18) 9.7 μg/m3 (41) 41.0
 
April 6, 2021, 10 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 33.0 ppb (31) 0.3 ppb (4) 20.0 μg/m3 (19) 9.7 μg/m3 (41) 41.0
 
April 6, 2021, 9 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 35.0 ppb (33) 0.3 ppb (4) 20.0 μg/m3 (19) 9.7 μg/m3 (41) 41.0
 
April 6, 2021, 8 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 37.0 ppb (35) 0.3 ppb (4) 20.0 μg/m3 (19) 9.8 μg/m3 (41) 41.0
 
April 6, 2021, 7 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 38.0 ppb (36) 0.3 ppb (4) 23.0 μg/m3 (22) 10.2 μg/m3 (43) 43.0
 
April 6, 2021, 6 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 41.0 ppb (38) 0.3 ppb (4) 23.0 μg/m3 (22) 10.8 μg/m3 (46) 46.0
 
April 6, 2021, 5 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (42) 0.3 ppb (4) 24.0 μg/m3 (23) 11.0 μg/m3 (46) 46.0
 
April 6, 2021, 4 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 48.0 ppb (45) 0.3 ppb (4) 25.0 μg/m3 (24) 10.6 μg/m3 (45) 45.0
 
April 6, 2021, 3 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 51.0 ppb (48) 0.3 ppb (4) 26.0 μg/m3 (25) 10.5 μg/m3 (44) 48.0
 
April 6, 2021, 2 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 53.0 ppb (50) 0.3 ppb (4) 26.0 μg/m3 (25) 10.5 μg/m3 (44) 50.0
 
April 6, 2021, 1 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 53.0 ppb (50) 0.3 ppb (4) 27.0 μg/m3 (25) 10.8 μg/m3 (46) 50.0
 
April 6, 2021, midnight 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 52.0 ppb (49) 0.3 ppb (4) 29.0 μg/m3 (27) 10.3 μg/m3 (43) 49.0
 
April 5, 2021, 11 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 49.0 ppb (46) 0.3 ppb (4) 31.0 μg/m3 (29) 10.2 μg/m3 (43) 46.0
 
April 5, 2021, 10 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 47.0 ppb (44) 0.3 ppb (4) 31.0 μg/m3 (29) 10.5 μg/m3 (44) 44.0
 
April 5, 2021, 9 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 46.0 ppb (43) 0.3 ppb (4) 49.0 μg/m3 (46) 11.3 μg/m3 (48) 48.0
 
April 5, 2021, 8 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 44.0 ppb (41) 0.3 ppb (4) 37.0 μg/m3 (35) 10.7 μg/m3 (45) 45.0
 
April 5, 2021, 7 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (42) 0.3 ppb (4) 33.0 μg/m3 (31) 10.8 μg/m3 (46) 46.0
 
April 5, 2021, 6 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 44.0 ppb (41) 0.3 ppb (4) 32.0 μg/m3 (30) 10.7 μg/m3 (45) 45.0
 
April 5, 2021, 5 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (42) 0.3 ppb (4) 29.0 μg/m3 (27) 10.8 μg/m3 (46) 46.0
 
April 5, 2021, 4 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 44.0 ppb (41) 0.4 ppb (5) 33.0 μg/m3 (31) 11.4 μg/m3 (48) 48.0
 
April 5, 2021, 3 p.m. 3.0 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 41.0 ppb (38) 0.4 ppb (5) 28.0 μg/m3 (26) 12.1 μg/m3 (51) 51.0
 
April 5, 2021, 2 p.m. 5.0 ppb (5) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 38.0 ppb (36) 0.4 ppb (5) 25.0 μg/m3 (24) 10.8 μg/m3 (46) 46.0
 
April 5, 2021, 1 p.m. 6.0 ppb (6) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A 0.3 ppb (4) 22.0 μg/m3 (21) 10.7 μg/m3 (45) 45.0
 
April 5, 2021, noon 5.0 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 25.0 ppb (24) 0.3 ppb (4) 19.0 μg/m3 (18) 10.1 μg/m3 (43) 43.0
 
April 5, 2021, 11 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 27.0 ppb (25) 0.3 ppb (4) 19.0 μg/m3 (18) 10.1 μg/m3 (43) 43.0
 
April 5, 2021, 10 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 29.0 ppb (27) 0.3 ppb (4) 19.0 μg/m3 (18) 9.8 μg/m3 (41) 41.0
 
April 5, 2021, 9 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 32.0 ppb (30) 0.3 ppb (4) 20.0 μg/m3 (19) 10.1 μg/m3 (43) 43.0
 
April 5, 2021, 8 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 35.0 ppb (33) 0.3 ppb (4) 22.0 μg/m3 (21) 11.0 μg/m3 (46) 46.0
 
April 5, 2021, 7 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 37.0 ppb (35) 0.3 ppb (4) 21.0 μg/m3 (20) 11.5 μg/m3 (48) 48.0
 
April 5, 2021, 6 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 40.0 ppb (38) 0.3 ppb (4) 24.0 μg/m3 (23) 11.4 μg/m3 (48) 48.0
 
April 5, 2021, 5 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 41.0 ppb (38) 0.3 ppb (4) 21.0 μg/m3 (20) 10.4 μg/m3 (44) 44.0
 
April 5, 2021, 4 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 39.0 ppb (37) 0.3 ppb (4) 22.0 μg/m3 (21) 9.7 μg/m3 (41) 41.0
 
April 5, 2021, 3 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 40.0 ppb (38) 0.3 ppb (4) 22.0 μg/m3 (21) 9.3 μg/m3 (39) 39.0
 
April 5, 2021, 2 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 39.0 ppb (37) 0.3 ppb (4) 22.0 μg/m3 (21) 9.5 μg/m3 (40) 40.0
 
April 5, 2021, 1 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 42.0 ppb (39) 0.3 ppb (4) 22.0 μg/m3 (21) 8.8 μg/m3 (37) 39.0
 
April 5, 2021, midnight 0.0 ppb (0) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 44.0 ppb (41) 0.3 ppb (4) 23.0 μg/m3 (22) 9.1 μg/m3 (38) 41.0
 
April 4, 2021, 11 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 47.0 ppb (44) 0.3 ppb (4) 26.0 μg/m3 (25) 10.5 μg/m3 (44) 44.0
 
April 4, 2021, 10 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 48.0 ppb (45) 0.3 ppb (4) 27.0 μg/m3 (25) 11.1 μg/m3 (47) 47.0
 
April 4, 2021, 9 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 49.0 ppb (46) 0.3 ppb (4) 24.0 μg/m3 (23) 10.3 μg/m3 (43) 46.0
 
April 4, 2021, 8 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 49.0 ppb (46) 0.3 ppb (4) 24.0 μg/m3 (23) 10.0 μg/m3 (42) 46.0
 
April 4, 2021, 7 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 47.0 ppb (44) 0.3 ppb (4) 21.0 μg/m3 (20) 10.0 μg/m3 (42) 44.0
 
April 4, 2021, 6 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 46.0 ppb (43) 0.3 ppb (4) 22.0 μg/m3 (21) 10.2 μg/m3 (43) 43.0
 
April 4, 2021, 5 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (42) 0.3 ppb (4) 21.0 μg/m3 (20) 9.7 μg/m3 (41) 42.0
 
April 4, 2021, 4 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 44.0 ppb (41) 0.3 ppb (4) 17.0 μg/m3 (16) 9.1 μg/m3 (38) 41.0
 
April 4, 2021, 3 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 43.0 ppb (40) 0.3 ppb (4) 20.0 μg/m3 (19) 10.0 μg/m3 (42) 42.0
 
April 4, 2021, 2 p.m. 3.0 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 39.0 ppb (37) 0.3 ppb (4) 23.0 μg/m3 (22) 11.8 μg/m3 (50) 50.0
 
April 4, 2021, 1 p.m. 5.0 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 30.0 ppb (28) 0.3 ppb (4) 26.0 μg/m3 (25) 15.4 μg/m3 (58) 58.0
 
April 4, 2021, noon 5.0 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 26.0 ppb (25) 0.3 ppb (4) 26.0 μg/m3 (25) 16.2 μg/m3 (60) 60.0
 
April 4, 2021, 11 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 27.0 ppb (25) 0.3 ppb (4) 26.0 μg/m3 (25) 16.1 μg/m3 (60) 60.0
 
April 4, 2021, 10 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 27.0 ppb (25) 0.3 ppb (4) 25.0 μg/m3 (24) 14.4 μg/m3 (56) 56.0
 
April 4, 2021, 9 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 31.0 ppb (29) 0.3 ppb (4) 24.0 μg/m3 (23) 13.3 μg/m3 (54) 54.0
 
April 4, 2021, 8 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 35.0 ppb (33) 0.3 ppb (4) 25.0 μg/m3 (24) 13.5 μg/m3 (54) 54.0
 
April 4, 2021, 7 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 39.0 ppb (37) 0.3 ppb (4) 25.0 μg/m3 (24) 12.6 μg/m3 (53) 53.0
 
April 4, 2021, 6 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 45.0 ppb (42) 0.3 ppb (4) 27.0 μg/m3 (25) 13.1 μg/m3 (54) 54.0
 
April 4, 2021, 5 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 49.0 ppb (46) 0.3 ppb (4) 27.0 μg/m3 (25) 14.0 μg/m3 (55) 55.0
 
April 4, 2021, 4 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 53.0 ppb (50) 0.3 ppb (4) 30.0 μg/m3 (28) 14.7 μg/m3 (57) 57.0
 
April 4, 2021, 3 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 57.0 ppb (58) 0.3 ppb (4) 32.0 μg/m3 (30) 14.3 μg/m3 (56) 58.0