AQSQID: 060371103

Site Name: Los Angeles - N. Main Street

Location: LA (Chavez Ravine Place), CA

Reporting: True, Located: True

Current AQI: 56.0

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
April 13, 2019, 10 a.m. 27.8 ppb (26) 3.1 ppb (3) 24.9 ppb (23) 25.0 ppb (23) 22.8 ppb (21) 0.0 ppb (0) 5.0 ppb (4) 0.41 ppb (5) 35.0 μg/m3 (32) 14.0 μg/m3 (54) 54.0
 
April 13, 2019, 9 a.m. 27.1 ppb (25) 1.0 ppb (1) 22.4 ppb (21) 26.0 ppb (24) 22.1 ppb (20) 0.0 ppb (0) 8.0 ppb (6) 0.37 ppb (4) 41.0 μg/m3 (37) 14.0 μg/m3 (54) 54.0
 
April 13, 2019, 8 a.m. 27.2 ppb (25) 1.5 ppb (1) 28.4 ppb (26) 26.0 ppb (24) 26.5 ppb (25) 0.0 ppb (0) 8.0 ppb (6) 0.39 ppb (4) 33.0 μg/m3 (30) 13.0 μg/m3 (52) 52.0
 
April 13, 2019, 7 a.m. 29.9 ppb (28) 2.8 ppb (3) 31.5 ppb (29) 27.0 ppb (25) 28.5 ppb (26) 0.0 ppb (0) 8.0 ppb (6) 0.4 ppb (4) 38.0 μg/m3 (35) 14.0 μg/m3 (54) 54.0
 
April 13, 2019, 6 a.m. 36.5 ppb (34) 4.3 ppb (4) 38.9 ppb (36) 32.0 ppb (30) 34.0 ppb (31) 0.0 ppb (0) 5.0 ppb (4) 0.47 ppb (5) 39.0 μg/m3 (35) 11.0 μg/m3 (46) 46.0
 
April 13, 2019, 5 a.m. 42.3 ppb (39) 5.7 ppb (5) 41.2 ppb (38) 37.0 ppb (34) 36.5 ppb (34) 0.0 ppb (0) 3.0 ppb (2) 0.59 ppb (7) 46.0 μg/m3 (42) 15.0 μg/m3 (56) 56.0
 
April 13, 2019, 4 a.m. 41.0 ppb (38) 4.4 ppb (4) 40.3 ppb (37) 37.0 ppb (34) 36.2 ppb (34) 0.0 ppb (0) 7.0 ppb (5) 0.43 ppb (5) 37.0 μg/m3 (34) 9.0 μg/m3 (38) 38.0
 
April 13, 2019, 3 a.m. 22.7 ppb (21) 0.6 ppb (1) 22.9 ppb (21) 22.0 ppb (20) 22.6 ppb (21) 0.0 ppb (0) 20.0 ppb (15) 0.3 ppb (3) 34.0 μg/m3 (31) 10.0 μg/m3 (42) 42.0
 
April 13, 2019, 2 a.m. 10.0 ppb (9) 0.1 ppb (0) 10.3 ppb (10) 10.0 ppb (9) 10.2 ppb (9) 0.0 ppb (0) 32.0 ppb (25) 0.25 ppb (3) 31.0 μg/m3 (28) 9.0 μg/m3 (38) 38.0
 
April 13, 2019, 1 a.m. 7.5 ppb (7) 0.4 ppb (0) 7.9 ppb (7) 7.0 ppb (6) 7.3 ppb (7) 0.0 ppb (0) 40.0 ppb (31) 0.2 ppb (2) 22.0 μg/m3 (20) 5.0 μg/m3 (21) 31.0
 
April 13, 2019, midnight 6.1 ppb (6) 0.6 ppb (1) 6.4 ppb (6) 5.0 ppb (5) 5.5 ppb (5) 0.0 ppb (0) 44.0 ppb (34) 0.19 ppb (2) 14.0 μg/m3 (13) 6.0 μg/m3 (25) 34.0
 
April 12, 2019, 11 p.m. 6.1 ppb (6) 0.8 ppb (1) 6.5 ppb (6) 5.0 ppb (5) 5.3 ppb (5) 0.0 ppb (0) 45.0 ppb (35) 0.19 ppb (2) 28.0 μg/m3 (25) 9.0 μg/m3 (38) 38.0
 
April 12, 2019, 10 p.m. 7.8 ppb (7) 1.3 ppb (1) 8.2 ppb (8) 6.0 ppb (6) 6.5 ppb (6) 0.0 ppb (0) 43.0 ppb (33) 0.19 ppb (2) 27.0 μg/m3 (25) 10.0 μg/m3 (42) 42.0
 
April 12, 2019, 9 p.m. 10.7 ppb (10) 2.2 ppb (2) 10.9 ppb (10) 9.0 ppb (8) 8.1 ppb (8) 0.0 ppb (0) 42.0 ppb (32) 0.2 ppb (2) 30.0 μg/m3 (27) 12.0 μg/m3 (50) 50.0
 
April 12, 2019, 8 p.m. 9.7 ppb (9) 2.0 ppb (2) 10.0 ppb (9) 8.0 ppb (7) 7.8 ppb (7) 0.0 ppb (0) 42.0 ppb (32) 0.21 ppb (2) 35.0 μg/m3 (32) 11.0 μg/m3 (46) 46.0
 
April 12, 2019, 7 p.m. 6.4 ppb (6) 1.1 ppb (1) 7.5 ppb (7) 5.0 ppb (5) 6.0 ppb (6) 0.0 ppb (0) 45.0 ppb (35) 0.18 ppb (2) 14.0 μg/m3 (13) 6.0 μg/m3 (25) 35.0
 
April 12, 2019, 6 p.m. 10.0 ppb (9) 2.2 ppb (2) 10.5 ppb (10) 8.0 ppb (7) 7.9 ppb (7) 0.0 ppb (0) 41.0 ppb (32) 0.2 ppb (2) 15.0 μg/m3 (14) 9.0 μg/m3 (38) 38.0
 
April 12, 2019, 5 p.m. 7.8 ppb (7) 1.6 ppb (1) 9.4 ppb (9) 6.0 ppb (6) 7.5 ppb (7) 0.0 ppb (0) 39.0 ppb (30) 0.21 ppb (2) 22.0 μg/m3 (20) 6.0 μg/m3 (25) 30.0
 
April 12, 2019, 4 p.m. 34.9 ppb (32) 12.3 ppb (11) 34.4 ppb (32) 23.0 ppb (21) 21.1 ppb (20) 0.0 ppb (0) 20.0 ppb (15) 0.37 ppb (4) 49.0 μg/m3 (45) 21.0 μg/m3 (69) 69.0
 
April 12, 2019, 3 p.m. 41.1 ppb (38) 16.7 ppb (15) 37.6 ppb (35) 24.0 ppb (22) 21.3 ppb (20) 0.0 ppb (0) 15.0 ppb (12) 0.41 ppb (5) 45.0 μg/m3 (41) 17.0 μg/m3 (61) 61.0
 
April 12, 2019, 2 p.m. 45.1 ppb (42) 17.8 ppb (16) 41.9 ppb (39) 27.0 ppb (25) 25.2 ppb (23) 0.0 ppb (0) 10.0 ppb (8) 0.39 ppb (4) 45.0 μg/m3 (41) 16.0 μg/m3 (59) 59.0
 
April 12, 2019, 1 p.m. 37.4 ppb (35) 9.1 ppb (8) 35.7 ppb (33) 28.0 ppb (26) 26.7 ppb (25) 0.0 ppb (0) 7.0 ppb (5) 0.42 ppb (5) 37.0 μg/m3 (34) 15.0 μg/m3 (56) 56.0
 
April 12, 2019, noon 17.7 ppb (16) 1.2 ppb (1) 15.1 ppb (14) 17.0 ppb (16) 14.9 ppb (14) 0.0 ppb (0) 19.0 ppb (15) 0.25 ppb (3) 33.0 μg/m3 (30) 12.0 μg/m3 (50) 50.0
 
April 12, 2019, 11 a.m. 14.4 ppb (13) 1.0 ppb (1) 13.1 ppb (12) 13.0 ppb (12) 12.2 ppb (11) 0.0 ppb (0) 22.0 ppb (17) 0.19 ppb (2) 35.0 μg/m3 (32) 12.0 μg/m3 (50) 50.0
 
April 12, 2019, 10 a.m. 10.5 ppb (10) 0.3 ppb (0) 7.7 ppb (7) 10.0 ppb (9) 7.7 ppb (7) 0.0 ppb (0) 28.0 ppb (22) 0.18 ppb (2) 26.0 μg/m3 (24) 7.0 μg/m3 (29) 29.0
 
April 12, 2019, 9 a.m. 19.1 ppb (18) 2.1 ppb (2) 14.7 ppb (14) 17.0 ppb (16) 13.4 ppb (12) 0.0 ppb (0) 18.0 ppb (14) 0.24 ppb (3) 33.0 μg/m3 (30) 12.0 μg/m3 (50) 50.0
 
April 12, 2019, 8 a.m. 21.7 ppb (20) 0.9 ppb (1) 25.9 ppb (24) 21.0 ppb (19) 25.2 ppb (23) 0.0 ppb (0) 16.0 ppb (12) 0.25 ppb (3) 52.0 μg/m3 (47) 15.0 μg/m3 (56) 56.0
 
April 12, 2019, 7 a.m. 23.7 ppb (22) 0.8 ppb (1) 25.6 ppb (24) 23.0 ppb (21) 25.1 ppb (23) 0.0 ppb (0) 16.0 ppb (12) 0.25 ppb (3) 46.0 μg/m3 (42) 17.0 μg/m3 (61) 61.0
 
April 12, 2019, 6 a.m. 26.5 ppb (25) 2.9 ppb (3) 25.0 ppb (23) 24.0 ppb (22) 22.8 ppb (21) 0.0 ppb (0) 17.0 ppb (13) 0.26 ppb (3) 45.0 μg/m3 (41) 16.0 μg/m3 (59) 59.0
 
April 12, 2019, 5 a.m. 21.3 ppb (20) 0.6 ppb (1) 21.9 ppb (20) 21.0 ppb (19) 21.8 ppb (20) 0.0 ppb (0) 20.0 ppb (15) 0.24 ppb (3) 46.0 μg/m3 (42) 16.0 μg/m3 (59) 59.0
 
April 12, 2019, 4 a.m. 31.1 ppb (29) 2.3 ppb (2) 30.8 ppb (29) 29.0 ppb (27) 28.8 ppb (27) 0.0 ppb (0) 14.0 ppb (11) 0.32 ppb (4) 45.0 μg/m3 (41) 17.0 μg/m3 (61) 61.0
 
April 12, 2019, 3 a.m. 27.6 ppb (26) 1.1 ppb (1) 27.0 ppb (25) 26.0 ppb (24) 26.3 ppb (24) 0.0 ppb (0) 17.0 ppb (13) 0.3 ppb (3) 53.0 μg/m3 (48) 18.0 μg/m3 (63) 63.0
 
April 12, 2019, 2 a.m. 29.2 ppb (27) 0.9 ppb (1) 28.8 ppb (27) 28.0 ppb (26) 28.1 ppb (26) 1.0 ppb (1) 18.0 ppb (14) 0.32 ppb (4) 49.0 μg/m3 (45) 15.0 μg/m3 (56) 56.0
 
April 12, 2019, 1 a.m. 27.5 ppb (25) 2.6 ppb (2) 26.9 ppb (25) 25.0 ppb (23) 24.4 ppb (23) 0.0 ppb (0) 22.0 ppb (17) 0.3 ppb (3) 41.0 μg/m3 (37) 15.0 μg/m3 (56) 56.0
 
April 12, 2019, midnight 18.1 ppb (17) 2.0 ppb (2) 18.0 ppb (17) 16.0 ppb (15) 15.5 ppb (14) 0.0 ppb (0) 31.0 ppb (24) 0.23 ppb (3) 34.0 μg/m3 (31) 5.0 μg/m3 (21) 31.0
 
April 11, 2019, 11 p.m. 7.9 ppb (7) 0.6 ppb (1) 8.7 ppb (8) 7.0 ppb (6) 7.7 ppb (7) 0.0 ppb (0) 45.0 ppb (35) 0.2 ppb (2) 20.0 μg/m3 (18) 6.0 μg/m3 (25) 35.0
 
April 11, 2019, 10 p.m. 10.5 ppb (10) 1.6 ppb (1) 10.9 ppb (10) 9.0 ppb (8) 8.9 ppb (8) 0.0 ppb (0) 44.0 ppb (34) 0.19 ppb (2) 20.0 μg/m3 (18) 9.0 μg/m3 (38) 38.0
 
April 11, 2019, 9 p.m. 17.0 ppb (16) 3.0 ppb (3) 17.4 ppb (16) 14.0 ppb (13) 13.7 ppb (13) 1.0 ppb (1) 42.0 ppb (32) 0.21 ppb (2) 27.0 μg/m3 (25) 8.0 μg/m3 (33) 33.0
 
April 11, 2019, 8 p.m. 18.7 ppb (17) 3.4 ppb (3) 19.1 ppb (18) 15.0 ppb (14) 14.9 ppb (14) 1.0 ppb (1) 40.0 ppb (31) 0.22 ppb (2) 27.0 μg/m3 (25) 9.0 μg/m3 (38) 38.0
 
April 11, 2019, 7 p.m. 33.0 ppb (31) 8.5 ppb (8) 33.1 ppb (31) 24.0 ppb (22) 23.4 ppb (22) 1.0 ppb (1) 30.0 ppb (23) 0.36 ppb (4) 48.0 μg/m3 (44) 14.0 μg/m3 (54) 54.0
 
April 11, 2019, 6 p.m. 41.7 ppb (39) 12.8 ppb (12) 42.0 ppb (39) 29.0 ppb (27) 27.7 ppb (26) 1.0 ppb (1) 26.0 ppb (20) 0.39 ppb (4) 44.0 μg/m3 (40) 15.0 μg/m3 (56) 56.0
 
April 11, 2019, 5 p.m. 47.9 ppb (44) 17.4 ppb (16) 47.6 ppb (44) 31.0 ppb (29) 28.5 ppb (26) 0.0 ppb (0) 20.0 ppb (15) 0.39 ppb (4) 48.0 μg/m3 (44) 15.0 μg/m3 (56) 56.0
 
April 11, 2019, 4 p.m. 59.4 ppb (56) 24.4 ppb (23) 57.3 ppb (54) 35.0 ppb (32) 31.7 ppb (29) 0.0 ppb (0) 14.0 ppb (11) 0.44 ppb (5) 48.0 μg/m3 (44) 16.0 μg/m3 (59) 59.0
 
April 11, 2019, 3 p.m. 68.7 ppb (66) 33.6 ppb (31) 66.9 ppb (64) 35.0 ppb (32) 32.0 ppb (30) 1.0 ppb (1) 10.0 ppb (8) 0.56 ppb (6) 45.0 μg/m3 (41) 13.0 μg/m3 (52) 66.0
 
April 11, 2019, 2 p.m. 91.5 ppb (90) 51.4 ppb (48) 89.6 ppb (88) 40.0 ppb (37) 35.9 ppb (33) 1.0 ppb (1) 3.0 ppb (2) 0.73 ppb (8) 46.0 μg/m3 (42) 9.0 μg/m3 (38) 90.0
 
April 11, 2019, 1 p.m. 76.4 ppb (74) 36.9 ppb (34) 81.8 ppb (80) 40.0 ppb (37) 36.3 ppb (34) 0.0 ppb (0) 2.0 ppb (2) 0.59 ppb (7) 34.0 μg/m3 (31) 12.0 μg/m3 (50) 80.0
 
April 11, 2019, noon 58.0 ppb (54) 18.9 ppb (18) 55.5 ppb (52) 39.0 ppb (36) 39.9 ppb (37) 0.0 ppb (0) 2.0 ppb (2) 0.79 ppb (9) 34.0 μg/m3 (31) 9.0 μg/m3 (38) 54.0
 
April 11, 2019, 11 a.m. 64.0 ppb (61) 26.9 ppb (25) 61.1 ppb (58) 37.0 ppb (34) 35.6 ppb (33) 0.0 ppb (0) 4.0 ppb (3) 0.63 ppb (7) 27.0 μg/m3 (25) 10.0 μg/m3 (42) 61.0
 
April 11, 2019, 10 a.m. 34.9 ppb (32) 3.6 ppb (3) 35.0 ppb (32) 31.0 ppb (29) 30.7 ppb (28) 0.0 ppb (0) 11.0 ppb (8) 0.27 ppb (3) 30.0 μg/m3 (27) 11.0 μg/m3 (46) 46.0
 
April 11, 2019, 9 a.m. 5.3 ppb (5) -0.2 ppb (0) 10.1 ppb (9) 6.0 ppb (6) 10.0 ppb (9) 0.0 ppb (0) 41.0 ppb (32) 0.14 ppb (2) 16.0 μg/m3 (15) 5.0 μg/m3 (21) 32.0
 
April 11, 2019, 8 a.m. 5.4 ppb (5) 0.1 ppb (0) 7.0 ppb (6) 5.0 ppb (5) 6.4 ppb (6) 0.0 ppb (0) 41.0 ppb (32) 0.2 ppb (2) 21.0 μg/m3 (19) 6.0 μg/m3 (25) 32.0
 
April 11, 2019, 7 a.m. 4.3 ppb (4) -0.3 ppb (0) 5.5 ppb (5) 5.0 ppb (5) 5.4 ppb (5) 0.0 ppb (0) 42.0 ppb (32) 0.16 ppb (2) 17.0 μg/m3 (15) 5.0 μg/m3 (21) 32.0
 
April 11, 2019, 6 a.m. 5.1 ppb (5) -0.2 ppb (0) 5.9 ppb (5) 5.0 ppb (5) 5.9 ppb (5) 0.0 ppb (0) 42.0 ppb (32) 0.17 ppb (2) 28.0 μg/m3 (25) 5.0 μg/m3 (21) 32.0
 
April 11, 2019, 5 a.m. 4.5 ppb (4) -0.2 ppb (0) 5.5 ppb (5) 5.0 ppb (5) 5.4 ppb (5) 0.0 ppb (0) 44.0 ppb (34) 0.16 ppb (2) 26.0 μg/m3 (24) 5.0 μg/m3 (21) 34.0
 
April 11, 2019, 4 a.m. 5.2 ppb (5) -0.2 ppb (0) 6.0 ppb (6) 5.0 ppb (5) 6.0 ppb (6) 0.0 ppb (0) 44.0 ppb (34) 0.19 ppb (2) 30.0 μg/m3 (27) 4.0 μg/m3 (17) 34.0
 
April 11, 2019, 3 a.m. 3.4 ppb (3) -0.3 ppb (0) 4.2 ppb (4) 4.0 ppb (4) 4.1 ppb (4) 0.0 ppb (0) 47.0 ppb (36) 0.14 ppb (2) 23.0 μg/m3 (21) 3.0 μg/m3 (12) 36.0
 
April 11, 2019, 2 a.m. 3.7 ppb (3) 0.0 ppb (0) 4.1 ppb (4) 4.0 ppb (4) 3.8 ppb (4) 0.0 ppb (0) 48.0 ppb (37) 0.15 ppb (2) 25.0 μg/m3 (23) 1.0 μg/m3 (4) 37.0
 
April 11, 2019, 1 a.m. 2.6 ppb (2) 0.0 ppb (0) 3.3 ppb (3) 3.0 ppb (3) 3.0 ppb (3) 0.0 ppb (0) 50.0 ppb (38) 0.15 ppb (2) 19.0 μg/m3 (17) 2.0 μg/m3 (8) 38.0
 
April 11, 2019, midnight 2.4 ppb (2) 0.0 ppb (0) 3.1 ppb (3) 2.0 ppb (2) 2.8 ppb (3) 0.0 ppb (0) 51.0 ppb (39) 0.15 ppb (2) 15.0 μg/m3 (14) 5.0 μg/m3 (21) 39.0
 
April 10, 2019, 11 p.m. 3.0 ppb (3) 0.3 ppb (0) 3.4 ppb (3) 3.0 ppb (3) 2.8 ppb (3) 0.0 ppb (0) 51.0 ppb (39) 0.16 ppb (2) 13.0 μg/m3 (12) 2.0 μg/m3 (8) 39.0
 
April 10, 2019, 10 p.m. 3.6 ppb (3) 0.5 ppb (0) 3.8 ppb (4) 3.0 ppb (3) 3.1 ppb (3) 0.0 ppb (0) 52.0 ppb (40) 0.18 ppb (2) 18.0 μg/m3 (16) 3.0 μg/m3 (12) 40.0
 
April 10, 2019, 9 p.m. 3.3 ppb (3) 0.4 ppb (0) 3.9 ppb (4) 3.0 ppb (3) 3.2 ppb (3) 0.0 ppb (0) 52.0 ppb (40) 0.17 ppb (2) 19.0 μg/m3 (17) 3.0 μg/m3 (12) 40.0
 
April 10, 2019, 8 p.m. 4.0 ppb (4) 0.6 ppb (1) 4.5 ppb (4) 3.0 ppb (3) 3.6 ppb (3) 0.0 ppb (0) 49.0 ppb (38) 0.15 ppb (2) 23.0 μg/m3 (21) 3.0 μg/m3 (12) 38.0
 
April 10, 2019, 7 p.m. 4.5 ppb (4) 0.9 ppb (1) 5.2 ppb (5) 4.0 ppb (4) 4.2 ppb (4) 0.0 ppb (0) 47.0 ppb (36) 0.15 ppb (2) 12.0 μg/m3 (11) 4.0 μg/m3 (17) 36.0
 
April 10, 2019, 6 p.m. 4.9 ppb (5) 0.8 ppb (1) 5.7 ppb (5) 4.0 ppb (4) 4.4 ppb (4) 0.0 ppb (0) 45.0 ppb (35) 0.16 ppb (2) 13.0 μg/m3 (12) 6.0 μg/m3 (25) 35.0
 
April 10, 2019, 5 p.m. 4.7 ppb (4) 0.8 ppb (1) 5.2 ppb (5) 4.0 ppb (4) 4.0 ppb (4) 0.0 ppb (0) 43.0 ppb (33) 0.16 ppb (2) N/A N/A 33.0
 
April 10, 2019, 4 p.m. 7.8 ppb (7) 1.5 ppb (1) 8.2 ppb (8) 6.0 ppb (6) 6.0 ppb (6) 0.0 ppb (0) 39.0 ppb (30) 0.18 ppb (2) N/A N/A 30.0
 
April 10, 2019, 3 p.m. 10.2 ppb (9) 1.7 ppb (2) 10.4 ppb (10) 8.0 ppb (7) 7.8 ppb (7) 0.0 ppb (0) 37.0 ppb (28) 0.18 ppb (2) N/A N/A 28.0
 
April 10, 2019, 2 p.m. 12.0 ppb (11) 2.3 ppb (2) 10.6 ppb (10) 10.0 ppb (9) 8.2 ppb (8) 0.0 ppb (0) 35.0 ppb (27) 0.19 ppb (2) 17.0 μg/m3 (15) 5.0 μg/m3 (21) 27.0
 
April 10, 2019, 1 p.m. 2.1 ppb (2) -0.1 ppb (0) 2.5 ppb (2) 2.0 ppb (2) 2.2 ppb (2) 0.0 ppb (0) 41.0 ppb (32) 0.15 ppb (2) 30.0 μg/m3 (27) 4.0 μg/m3 (17) 32.0
 
April 10, 2019, noon 3.8 ppb (4) 0.2 ppb (0) 4.1 ppb (4) 4.0 ppb (4) 3.4 ppb (3) 0.0 ppb (0) 39.0 ppb (30) 0.17 ppb (2) 22.0 μg/m3 (20) 4.0 μg/m3 (17) 30.0
 
April 10, 2019, 11 a.m. 2.9 ppb (3) 0.3 ppb (0) 2.8 ppb (3) 3.0 ppb (3) 2.2 ppb (2) 0.0 ppb (0) 40.0 ppb (31) 0.16 ppb (2) 13.0 μg/m3 (12) 5.0 μg/m3 (21) 31.0
 
April 10, 2019, 10 a.m. 1.2 ppb (1) -0.2 ppb (0) 1.8 ppb (2) 1.0 ppb (1) 1.8 ppb (2) 0.0 ppb (0) 42.0 ppb (32) 0.13 ppb (1) 24.0 μg/m3 (22) 5.0 μg/m3 (21) 32.0
 
April 10, 2019, 9 a.m. 1.1 ppb (1) -0.3 ppb (0) 2.0 ppb (2) 1.0 ppb (1) 1.9 ppb (2) 0.0 ppb (0) 43.0 ppb (33) 0.13 ppb (1) 20.0 μg/m3 (18) 7.0 μg/m3 (29) 33.0
 
April 10, 2019, 8 a.m. 1.7 ppb (2) -0.2 ppb (0) 2.7 ppb (3) 2.0 ppb (2) 2.6 ppb (2) 0.0 ppb (0) 43.0 ppb (33) 0.15 ppb (2) 26.0 μg/m3 (24) 6.0 μg/m3 (25) 33.0
 
April 10, 2019, 7 a.m. 1.5 ppb (1) -0.3 ppb (0) 2.5 ppb (2) 2.0 ppb (2) 2.5 ppb (2) 0.0 ppb (0) 45.0 ppb (35) 0.14 ppb (2) 52.0 μg/m3 (47) 5.0 μg/m3 (21) 47.0
 
April 10, 2019, 6 a.m. 2.1 ppb (2) -0.2 ppb (0) 3.7 ppb (3) 2.0 ppb (2) 3.4 ppb (3) 0.0 ppb (0) 45.0 ppb (35) 0.17 ppb (2) 86.0 μg/m3 (66) 8.0 μg/m3 (33) 66.0
 
April 10, 2019, 5 a.m. 2.8 ppb (3) 0.0 ppb (0) 4.5 ppb (4) 3.0 ppb (3) 3.9 ppb (4) 0.0 ppb (0) 47.0 ppb (36) 0.15 ppb (2) 137.0 μg/m3 (91) 8.0 μg/m3 (33) 91.0
 
April 10, 2019, 4 a.m. 2.0 ppb (2) -0.2 ppb (0) 2.8 ppb (3) 2.0 ppb (2) 2.8 ppb (3) 0.0 ppb (0) 47.0 ppb (36) 0.16 ppb (2) 98.0 μg/m3 (72) 5.0 μg/m3 (21) 72.0
 
April 10, 2019, 3 a.m. 2.4 ppb (2) -0.2 ppb (0) 3.2 ppb (3) 3.0 ppb (3) 3.0 ppb (3) 0.0 ppb (0) 46.0 ppb (35) 0.14 ppb (2) 86.0 μg/m3 (66) 4.0 μg/m3 (17) 66.0
 
April 10, 2019, 2 a.m. 2.9 ppb (3) -0.1 ppb (0) 3.5 ppb (3) 3.0 ppb (3) 3.3 ppb (3) 0.0 ppb (0) 47.0 ppb (36) 0.15 ppb (2) 109.0 μg/m3 (77) 3.0 μg/m3 (12) 77.0
 
April 10, 2019, 1 a.m. 3.4 ppb (3) 0.1 ppb (0) 3.8 ppb (4) 3.0 ppb (3) 3.4 ppb (3) 0.0 ppb (0) 48.0 ppb (37) 0.15 ppb (2) 91.0 μg/m3 (68) 2.0 μg/m3 (8) 68.0
 
April 10, 2019, midnight 3.1 ppb (3) 0.2 ppb (0) 3.6 ppb (3) 3.0 ppb (3) 3.1 ppb (3) 0.0 ppb (0) 49.0 ppb (38) 0.15 ppb (2) 73.0 μg/m3 (59) 1.0 μg/m3 (4) 59.0
 
April 9, 2019, 11 p.m. 2.9 ppb (3) 0.3 ppb (0) 3.5 ppb (3) 3.0 ppb (3) 3.0 ppb (3) 0.0 ppb (0) 50.0 ppb (38) 0.16 ppb (2) 69.0 μg/m3 (57) 2.0 μg/m3 (8) 57.0
 
April 9, 2019, 10 p.m. 3.5 ppb (3) 0.5 ppb (0) 4.5 ppb (4) 3.0 ppb (3) 3.9 ppb (4) 0.0 ppb (0) 47.0 ppb (36) 0.16 ppb (2) 42.0 μg/m3 (38) 5.0 μg/m3 (21) 38.0
 
April 9, 2019, 9 p.m. 7.3 ppb (7) 1.3 ppb (1) 8.5 ppb (8) 6.0 ppb (6) 7.0 ppb (6) 0.0 ppb (0) 43.0 ppb (33) 0.22 ppb (2) 34.0 μg/m3 (31) 10.0 μg/m3 (42) 42.0
 
April 9, 2019, 8 p.m. 10.9 ppb (10) 2.4 ppb (2) 12.0 ppb (11) 8.0 ppb (7) 9.2 ppb (9) 0.0 ppb (0) 37.0 ppb (28) 0.23 ppb (3) N/A N/A 28.0
 
April 9, 2019, 7 p.m. 14.1 ppb (13) 3.7 ppb (3) 15.2 ppb (14) 10.0 ppb (9) 11.2 ppb (10) 0.0 ppb (0) 32.0 ppb (25) 0.24 ppb (3) N/A N/A 25.0
 
April 9, 2019, 6 p.m. 23.1 ppb (21) 7.6 ppb (7) 23.9 ppb (22) 16.0 ppb (15) 15.9 ppb (15) 1.0 ppb (1) 25.0 ppb (19) 0.3 ppb (3) N/A N/A 22.0
 
April 9, 2019, 5 p.m. 39.9 ppb (37) 17.3 ppb (16) 40.7 ppb (38) 23.0 ppb (21) 23.2 ppb (21) 1.0 ppb (1) 16.0 ppb (12) 0.44 ppb (5) 58.0 μg/m3 (52) 21.0 μg/m3 (69) 69.0
 
April 9, 2019, 4 p.m. 46.9 ppb (43) 21.3 ppb (20) 46.6 ppb (43) 26.0 ppb (24) 24.8 ppb (23) 1.0 ppb (1) 12.0 ppb (9) 0.51 ppb (6) 53.0 μg/m3 (48) 21.0 μg/m3 (69) 69.0
 
April 9, 2019, 3 p.m. 54.9 ppb (51) 27.9 ppb (26) 52.9 ppb (49) 27.0 ppb (25) 25.4 ppb (24) 1.0 ppb (1) 8.0 ppb (6) 0.53 ppb (6) 49.0 μg/m3 (45) 16.0 μg/m3 (59) 59.0
 
April 9, 2019, 2 p.m. 112.6 ppb (102) 83.4 ppb (81) 108.6 ppb (101) 29.0 ppb (27) 23.5 ppb (22) 1.0 ppb (1) 1.0 ppb (1) 1.06 ppb (12) 50.0 μg/m3 (45) 21.0 μg/m3 (69) 102.0
 
April 9, 2019, 1 p.m. 64.7 ppb (61) 40.6 ppb (38) 62.2 ppb (59) 24.0 ppb (22) 19.6 ppb (18) 0.0 ppb (0) 1.0 ppb (1) 0.74 ppb (8) 34.0 μg/m3 (31) 17.0 μg/m3 (61) 61.0
 
April 9, 2019, noon 53.3 ppb (49) 29.5 ppb (27) 48.9 ppb (45) 24.0 ppb (22) 22.7 ppb (21) 0.0 ppb (0) 1.0 ppb (1) 0.62 ppb (7) 33.0 μg/m3 (30) 20.0 μg/m3 (67) 67.0
 
April 9, 2019, 11 a.m. 58.7 ppb (55) 32.4 ppb (30) 54.5 ppb (51) 26.0 ppb (24) 22.1 ppb (20) 0.0 ppb (0) 1.0 ppb (1) 0.6 ppb (7) 28.0 μg/m3 (25) 14.0 μg/m3 (54) 55.0
 
April 9, 2019, 10 a.m. 35.3 ppb (33) 10.8 ppb (10) 35.9 ppb (33) 24.0 ppb (22) 25.9 ppb (24) 0.0 ppb (0) 1.0 ppb (1) 0.49 ppb (5) 30.0 μg/m3 (27) 15.0 μg/m3 (56) 56.0
 
April 9, 2019, 9 a.m. 39.6 ppb (37) 14.3 ppb (13) 38.3 ppb (35) 25.0 ppb (23) 24.2 ppb (22) 0.0 ppb (0) 1.0 ppb (1) 0.56 ppb (6) 30.0 μg/m3 (27) 15.0 μg/m3 (56) 56.0
 
April 9, 2019, 8 a.m. 47.3 ppb (44) 20.4 ppb (19) 45.1 ppb (42) 27.0 ppb (25) 28.7 ppb (27) 0.0 ppb (0) 1.0 ppb (1) 0.64 ppb (7) 29.0 μg/m3 (26) 17.0 μg/m3 (61) 61.0
 
April 9, 2019, 7 a.m. 46.9 ppb (43) 16.6 ppb (15) 46.2 ppb (43) 30.0 ppb (28) 31.9 ppb (30) 0.0 ppb (0) 0.0 ppb (0) 0.74 ppb (8) 33.0 μg/m3 (30) 18.0 μg/m3 (63) 63.0
 
April 9, 2019, 6 a.m. 63.6 ppb (60) 30.0 ppb (28) 61.0 ppb (57) 34.0 ppb (31) 35.4 ppb (33) 0.0 ppb (0) 1.0 ppb (1) 0.8 ppb (9) 43.0 μg/m3 (39) 18.0 μg/m3 (63) 63.0
 
April 9, 2019, 5 a.m. 56.2 ppb (52) 18.6 ppb (17) 54.6 ppb (51) 38.0 ppb (35) 37.4 ppb (35) 0.0 ppb (0) 0.0 ppb (0) 0.55 ppb (6) 50.0 μg/m3 (45) 16.0 μg/m3 (59) 59.0
 
April 9, 2019, 4 a.m. 49.4 ppb (46) 11.1 ppb (10) 50.4 ppb (47) 38.0 ppb (35) 39.0 ppb (36) 1.0 ppb (1) 1.0 ppb (1) 0.57 ppb (6) 46.0 μg/m3 (42) 13.0 μg/m3 (52) 52.0
 
April 9, 2019, 3 a.m. 36.2 ppb (34) 1.8 ppb (2) 37.0 ppb (34) 34.0 ppb (31) 35.7 ppb (33) 0.0 ppb (0) 7.0 ppb (5) 0.34 ppb (4) 37.0 μg/m3 (34) 13.0 μg/m3 (52) 52.0
 
April 9, 2019, 2 a.m. 22.1 ppb (20) 0.9 ppb (1) 22.6 ppb (21) 21.0 ppb (19) 21.8 ppb (20) 0.0 ppb (0) 19.0 ppb (15) 0.28 ppb (3) 33.0 μg/m3 (30) 14.0 μg/m3 (54) 54.0
 
April 9, 2019, 1 a.m. 17.7 ppb (16) 1.6 ppb (1) 18.2 ppb (17) 16.0 ppb (15) 16.3 ppb (15) 0.0 ppb (0) 26.0 ppb (20) 0.25 ppb (3) 26.0 μg/m3 (24) 10.0 μg/m3 (42) 42.0
 
April 9, 2019, midnight 16.0 ppb (15) 2.3 ppb (2) 16.8 ppb (16) 14.0 ppb (13) 13.8 ppb (13) 0.0 ppb (0) 29.0 ppb (22) 0.24 ppb (3) 20.0 μg/m3 (18) 8.0 μg/m3 (33) 33.0
 
April 8, 2019, 11 p.m. 7.7 ppb (7) 0.7 ppb (1) 9.0 ppb (8) 7.0 ppb (6) 7.9 ppb (7) 0.0 ppb (0) 40.0 ppb (31) 0.2 ppb (2) 17.0 μg/m3 (15) 8.0 μg/m3 (33) 33.0
 
April 8, 2019, 10 p.m. 10.0 ppb (9) 0.7 ppb (1) 11.7 ppb (11) 9.0 ppb (8) 10.6 ppb (10) 0.0 ppb (0) 57.0 ppb (44) 0.27 ppb (3) 24.0 μg/m3 (22) 11.0 μg/m3 (46) 46.0
 
April 8, 2019, 9 p.m. 12.8 ppb (12) 1.1 ppb (1) 14.4 ppb (13) 12.0 ppb (11) 13.0 ppb (12) 0.0 ppb (0) 60.0 ppb (46) 0.33 ppb (4) 29.0 μg/m3 (26) 9.0 μg/m3 (38) 46.0
 
April 8, 2019, 8 p.m. 20.5 ppb (19) 2.3 ppb (2) 22.2 ppb (21) 18.0 ppb (17) 19.5 ppb (18) 0.0 ppb (0) 60.0 ppb (46) 0.46 ppb (5) 41.0 μg/m3 (37) 19.0 μg/m3 (65) 65.0
 
April 8, 2019, 7 p.m. 25.5 ppb (24) 4.2 ppb (4) 27.3 ppb (25) 21.0 ppb (19) 21.9 ppb (20) 0.0 ppb (0) 50.0 ppb (38) 0.37 ppb (4) 31.0 μg/m3 (28) 10.0 μg/m3 (42) 42.0
 
April 8, 2019, 6 p.m. 26.3 ppb (24) 5.6 ppb (5) 26.9 ppb (25) 21.0 ppb (19) 20.5 ppb (19) 0.0 ppb (0) 40.0 ppb (31) 0.3 ppb (3) 34.0 μg/m3 (31) 11.0 μg/m3 (46) 46.0
 
April 8, 2019, 5 p.m. 24.5 ppb (23) 6.0 ppb (6) 25.2 ppb (23) 18.0 ppb (17) 18.8 ppb (17) 0.0 ppb (0) 35.0 ppb (27) 0.29 ppb (3) 20.0 μg/m3 (18) 9.0 μg/m3 (38) 38.0
 
April 8, 2019, 4 p.m. 48.5 ppb (45) 18.3 ppb (17) 48.6 ppb (45) 30.0 ppb (28) 29.4 ppb (27) 0.0 ppb (0) 21.0 ppb (16) 0.59 ppb (7) 25.0 μg/m3 (23) 13.0 μg/m3 (52) 52.0
 
April 8, 2019, 3 p.m. 98.6 ppb (97) 58.2 ppb (54) 98.0 ppb (97) 40.0 ppb (37) 37.7 ppb (35) 1.0 ppb (1) 6.0 ppb (5) 0.96 ppb (11) 42.0 μg/m3 (38) 20.0 μg/m3 (67) 97.0
 
April 8, 2019, 2 p.m. 121.1 ppb (104) 82.8 ppb (81) 117.2 ppb (103) 38.0 ppb (35) 32.4 ppb (30) 1.0 ppb (1) 2.0 ppb (2) 1.11 ppb (12) 43.0 μg/m3 (39) 21.0 μg/m3 (69) 104.0
 
April 8, 2019, 1 p.m. 100.5 ppb (99) 66.6 ppb (63) 92.1 ppb (91) 34.0 ppb (31) 25.3 ppb (23) 0.0 ppb (0) 1.0 ppb (1) 0.93 ppb (10) 33.0 μg/m3 (30) 13.0 μg/m3 (52) 99.0
 
April 8, 2019, noon 74.0 ppb (71) 41.5 ppb (38) 63.7 ppb (60) 32.0 ppb (30) 30.6 ppb (28) 0.0 ppb (0) 1.0 ppb (1) 0.8 ppb (9) 30.0 μg/m3 (27) 19.0 μg/m3 (65) 71.0
 
April 8, 2019, 11 a.m. 52.8 ppb (49) 20.0 ppb (19) 50.9 ppb (47) 33.0 ppb (31) 30.4 ppb (28) 0.0 ppb (0) 1.0 ppb (1) 0.65 ppb (7) 30.0 μg/m3 (27) 16.0 μg/m3 (59) 59.0
 
April 8, 2019, 10 a.m. 43.5 ppb (40) 12.8 ppb (12) 40.6 ppb (38) 31.0 ppb (29) 31.2 ppb (29) 0.0 ppb (0) 1.0 ppb (1) 0.65 ppb (7) 26.0 μg/m3 (24) 14.0 μg/m3 (54) 54.0
 
April 8, 2019, 9 a.m. 42.0 ppb (39) 11.8 ppb (11) 37.5 ppb (35) 30.0 ppb (28) 29.3 ppb (27) 0.0 ppb (0) 1.0 ppb (1) 0.7 ppb (8) 27.0 μg/m3 (25) 16.0 μg/m3 (59) 59.0
 
April 8, 2019, 8 a.m. 47.8 ppb (44) 18.9 ppb (18) 47.2 ppb (44) 29.0 ppb (27) 30.6 ppb (28) 0.0 ppb (0) 1.0 ppb (1) 0.86 ppb (10) 28.0 μg/m3 (25) 16.0 μg/m3 (59) 59.0
 
April 8, 2019, 7 a.m. 46.8 ppb (43) 16.7 ppb (15) 46.4 ppb (43) 30.0 ppb (28) 32.3 ppb (30) 0.0 ppb (0) 1.0 ppb (1) 0.95 ppb (11) 32.0 μg/m3 (29) 16.0 μg/m3 (59) 59.0
 
April 8, 2019, 6 a.m. 44.2 ppb (41) 13.8 ppb (13) 44.0 ppb (41) 30.0 ppb (28) 32.6 ppb (30) 0.0 ppb (0) 1.0 ppb (1) 0.9 ppb (10) 32.0 μg/m3 (29) 17.0 μg/m3 (61) 61.0
 
April 8, 2019, 5 a.m. 28.8 ppb (27) 3.3 ppb (3) 31.3 ppb (29) 26.0 ppb (24) 28.7 ppb (27) 0.0 ppb (0) 6.0 ppb (5) 0.62 ppb (7) 33.0 μg/m3 (30) 16.0 μg/m3 (59) 59.0
 
April 8, 2019, 4 a.m. 25.5 ppb (24) 1.3 ppb (1) 26.3 ppb (24) 24.0 ppb (22) 26.0 ppb (24) 0.0 ppb (0) 11.0 ppb (8) 0.51 ppb (6) 31.0 μg/m3 (28) 17.0 μg/m3 (61) 61.0
 
April 8, 2019, 3 a.m. 23.2 ppb (21) 1.1 ppb (1) 23.1 ppb (21) 22.0 ppb (20) 22.9 ppb (21) 1.0 ppb (1) 14.0 ppb (11) 0.49 ppb (5) 43.0 μg/m3 (39) 11.0 μg/m3 (46) 46.0
 
April 8, 2019, 2 a.m. 13.1 ppb (12) 0.5 ppb (0) 12.8 ppb (12) 13.0 ppb (12) 12.8 ppb (12) 0.0 ppb (0) 27.0 ppb (21) 0.32 ppb (4) 40.0 μg/m3 (36) 9.0 μg/m3 (38) 38.0
 
April 8, 2019, 1 a.m. 8.8 ppb (8) 0.4 ppb (0) 9.3 ppb (9) 8.0 ppb (7) 8.8 ppb (8) 0.0 ppb (0) 36.0 ppb (28) 0.25 ppb (3) 29.0 μg/m3 (26) 12.0 μg/m3 (50) 50.0
 
April 8, 2019, midnight 9.9 ppb (9) 0.6 ppb (1) 9.5 ppb (9) 9.0 ppb (8) 8.8 ppb (8) 0.0 ppb (0) 50.0 ppb (38) 0.28 ppb (3) 27.0 μg/m3 (25) 13.0 μg/m3 (52) 52.0
 
April 7, 2019, 11 p.m. 10.1 ppb (9) 0.8 ppb (1) N/A 9.0 ppb (8) N/A 1.0 ppb (1) 53.0 ppb (41) 0.28 ppb (3) 25.0 μg/m3 (23) 13.0 μg/m3 (52) 52.0
 
April 7, 2019, 10 p.m. 8.9 ppb (8) 0.7 ppb (1) 10.9 ppb (10) 8.0 ppb (7) 10.0 ppb (9) 1.0 ppb (1) 55.0 ppb (42) 0.29 ppb (3) 29.0 μg/m3 (26) 14.0 μg/m3 (54) 54.0
 
April 7, 2019, 9 p.m. 11.8 ppb (11) 1.1 ppb (1) 13.9 ppb (13) 11.0 ppb (10) 12.5 ppb (12) 1.0 ppb (1) 58.0 ppb (45) 0.38 ppb (4) 33.0 μg/m3 (30) 13.0 μg/m3 (52) 52.0
 
April 7, 2019, 8 p.m. 16.0 ppb (15) 2.3 ppb (2) 17.8 ppb (16) 14.0 ppb (13) 15.1 ppb (14) 0.0 ppb (0) 50.0 ppb (38) 0.38 ppb (4) 29.0 μg/m3 (26) 13.0 μg/m3 (52) 52.0
 
April 7, 2019, 7 p.m. 12.3 ppb (11) 1.6 ppb (1) 13.9 ppb (13) 11.0 ppb (10) 12.1 ppb (11) 0.0 ppb (0) 46.0 ppb (35) 0.35 ppb (4) 23.0 μg/m3 (21) 12.0 μg/m3 (50) 50.0
 
April 7, 2019, 6 p.m. 18.0 ppb (17) 3.8 ppb (4) 19.6 ppb (18) 14.0 ppb (13) 15.2 ppb (14) 0.0 ppb (0) 38.0 ppb (29) 0.38 ppb (4) 24.0 μg/m3 (22) 15.0 μg/m3 (56) 56.0
 
April 7, 2019, 5 p.m. 16.8 ppb (16) 4.3 ppb (4) 18.3 ppb (17) 12.0 ppb (11) 13.5 ppb (12) 0.0 ppb (0) 31.0 ppb (24) 0.27 ppb (3) 24.0 μg/m3 (22) 11.0 μg/m3 (46) 46.0
 
April 7, 2019, 4 p.m. 17.6 ppb (16) 5.2 ppb (5) 18.7 ppb (17) 12.0 ppb (11) 13.2 ppb (12) 0.0 ppb (0) 23.0 ppb (18) 0.3 ppb (3) 28.0 μg/m3 (25) 14.0 μg/m3 (54) 54.0
 
April 7, 2019, 3 p.m. 20.5 ppb (19) 7.5 ppb (7) 20.8 ppb (19) 13.0 ppb (12) 13.2 ppb (12) 0.0 ppb (0) 15.0 ppb (12) 0.36 ppb (4) 28.0 μg/m3 (25) 14.0 μg/m3 (54) 54.0
 
April 7, 2019, 2 p.m. 26.1 ppb (24) 11.3 ppb (10) 26.0 ppb (24) 15.0 ppb (14) 15.1 ppb (14) 0.0 ppb (0) 5.0 ppb (4) 0.5 ppb (6) 21.0 μg/m3 (19) 12.0 μg/m3 (50) 50.0
 
April 7, 2019, 1 p.m. 22.7 ppb (21) 5.0 ppb (5) 22.4 ppb (21) 18.0 ppb (17) 17.7 ppb (16) 0.0 ppb (0) 2.0 ppb (2) 0.43 ppb (5) 14.0 μg/m3 (13) 11.0 μg/m3 (46) 46.0
 
April 7, 2019, noon 24.5 ppb (23) 5.9 ppb (5) 22.8 ppb (21) 19.0 ppb (18) 18.7 ppb (17) 0.0 ppb (0) 2.0 ppb (2) 0.44 ppb (5) 22.0 μg/m3 (20) 8.0 μg/m3 (33) 33.0
 
April 7, 2019, 11 a.m. 15.9 ppb (15) 1.4 ppb (1) 16.4 ppb (15) 14.0 ppb (13) 15.4 ppb (14) 0.0 ppb (0) 4.0 ppb (3) 0.38 ppb (4) 16.0 μg/m3 (15) 15.0 μg/m3 (56) 56.0
 
April 7, 2019, 10 a.m. 22.1 ppb (20) 3.6 ppb (3) 23.3 ppb (22) 19.0 ppb (18) 20.6 ppb (19) 0.0 ppb (0) 2.0 ppb (2) 0.47 ppb (5) 19.0 μg/m3 (17) 9.0 μg/m3 (38) 38.0
 
April 7, 2019, 9 a.m. 22.5 ppb (21) 2.4 ppb (2) 21.9 ppb (20) 20.0 ppb (19) 20.3 ppb (19) 0.0 ppb (0) 3.0 ppb (2) 0.5 ppb (6) 22.0 μg/m3 (20) 10.0 μg/m3 (42) 42.0
 
April 7, 2019, 8 a.m. 25.0 ppb (23) 3.2 ppb (3) 25.2 ppb (23) 22.0 ppb (20) 23.4 ppb (22) 0.0 ppb (0) 4.0 ppb (3) 0.52 ppb (6) 20.0 μg/m3 (18) 13.0 μg/m3 (52) 52.0
 
April 7, 2019, 7 a.m. 17.5 ppb (16) 0.8 ppb (1) 19.1 ppb (18) 17.0 ppb (16) 18.7 ppb (17) 0.0 ppb (0) 13.0 ppb (10) 0.4 ppb (4) 22.0 μg/m3 (20) 10.0 μg/m3 (42) 42.0
 
April 7, 2019, 6 a.m. 12.1 ppb (11) 0.5 ppb (0) 15.9 ppb (15) 12.0 ppb (11) 14.5 ppb (13) 0.0 ppb (0) 22.0 ppb (17) 0.26 ppb (3) 26.0 μg/m3 (24) 8.0 μg/m3 (33) 33.0
 
April 7, 2019, 5 a.m. 12.9 ppb (12) 0.6 ppb (1) 14.2 ppb (13) 12.0 ppb (11) 13.8 ppb (13) 0.0 ppb (0) 23.0 ppb (18) 0.21 ppb (2) 24.0 μg/m3 (22) 8.0 μg/m3 (33) 33.0
 
April 7, 2019, 4 a.m. 10.1 ppb (9) 0.2 ppb (0) 10.7 ppb (10) 10.0 ppb (9) 10.6 ppb (10) 0.0 ppb (0) 27.0 ppb (21) 0.21 ppb (2) 18.0 μg/m3 (16) 7.0 μg/m3 (29) 29.0
 
April 7, 2019, 3 a.m. 7.0 ppb (6) 0.0 ppb (0) 7.4 ppb (7) 7.0 ppb (6) 7.4 ppb (7) 0.0 ppb (0) 32.0 ppb (25) 0.16 ppb (2) 11.0 μg/m3 (10) 2.0 μg/m3 (8) 25.0
 
April 7, 2019, 2 a.m. 7.4 ppb (7) 0.0 ppb (0) 7.6 ppb (7) 7.0 ppb (6) 7.6 ppb (7) 0.0 ppb (0) 31.0 ppb (24) 0.16 ppb (2) 10.0 μg/m3 (9) 1.0 μg/m3 (4) 24.0
 
April 7, 2019, 1 a.m. 6.0 ppb (6) 0.4 ppb (0) 6.3 ppb (6) 6.0 ppb (6) 5.8 ppb (5) 0.0 ppb (0) 34.0 ppb (26) 0.17 ppb (2) 12.0 μg/m3 (11) 5.0 μg/m3 (21) 26.0
 
April 7, 2019, midnight 4.2 ppb (4) 0.5 ppb (0) 4.9 ppb (5) 4.0 ppb (4) 4.2 ppb (4) 0.0 ppb (0) 37.0 ppb (28) 0.16 ppb (2) 14.0 μg/m3 (13) 8.0 μg/m3 (33) 33.0
 
April 6, 2019, 11 p.m. 3.7 ppb (3) 0.5 ppb (0) 4.5 ppb (4) 3.0 ppb (3) 3.8 ppb (4) 0.0 ppb (0) 38.0 ppb (29) 0.15 ppb (2) 13.0 μg/m3 (12) 4.0 μg/m3 (17) 29.0
 
April 6, 2019, 10 p.m. 4.5 ppb (4) 0.8 ppb (1) 5.5 ppb (5) 4.0 ppb (4) 4.5 ppb (4) 0.0 ppb (0) 38.0 ppb (29) 0.16 ppb (2) 16.0 μg/m3 (15) 4.0 μg/m3 (17) 29.0
 
April 6, 2019, 9 p.m. 7.9 ppb (7) 1.6 ppb (1) 9.0 ppb (8) 6.0 ppb (6) 7.0 ppb (6) 0.0 ppb (0) 38.0 ppb (29) 0.19 ppb (2) 15.0 μg/m3 (14) 6.0 μg/m3 (25) 29.0
 
April 6, 2019, 8 p.m. 9.8 ppb (9) 2.0 ppb (2) 10.8 ppb (10) 8.0 ppb (7) 8.4 ppb (8) 0.0 ppb (0) 38.0 ppb (29) 0.22 ppb (2) 22.0 μg/m3 (20) 9.0 μg/m3 (38) 38.0
 
April 6, 2019, 7 p.m. 10.5 ppb (10) 2.3 ppb (2) 11.7 ppb (11) 8.0 ppb (7) 9.0 ppb (8) 0.0 ppb (0) 36.0 ppb (28) 0.24 ppb (3) 20.0 μg/m3 (18) 10.0 μg/m3 (42) 42.0
 
April 6, 2019, 6 p.m. 15.4 ppb (14) 4.5 ppb (4) 16.3 ppb (15) 11.0 ppb (10) 11.3 ppb (10) 0.0 ppb (0) 30.0 ppb (23) 0.26 ppb (3) 23.0 μg/m3 (21) 12.0 μg/m3 (50) 50.0
 
April 6, 2019, 5 p.m. 20.1 ppb (19) 7.4 ppb (7) 20.7 ppb (19) 13.0 ppb (12) 12.7 ppb (12) 0.0 ppb (0) 23.0 ppb (18) 0.24 ppb (3) 18.0 μg/m3 (16) 13.0 μg/m3 (52) 52.0
 
April 6, 2019, 4 p.m. 10.4 ppb (10) 3.0 ppb (3) 11.1 ppb (10) 7.0 ppb (6) 7.9 ppb (7) 0.0 ppb (0) 23.0 ppb (18) 0.19 ppb (2) 17.0 μg/m3 (15) 9.0 μg/m3 (38) 38.0
 
April 6, 2019, 3 p.m. 9.9 ppb (9) 2.7 ppb (3) 10.1 ppb (9) 7.0 ppb (6) 7.5 ppb (7) 0.0 ppb (0) 19.0 ppb (15) 0.21 ppb (2) 19.0 μg/m3 (17) 9.0 μg/m3 (38) 38.0
 
April 6, 2019, 2 p.m. 16.5 ppb (15) 5.3 ppb (5) 16.2 ppb (15) 11.0 ppb (10) 11.0 ppb (10) 0.0 ppb (0) 10.0 ppb (8) 0.3 ppb (3) 17.0 μg/m3 (15) 10.0 μg/m3 (42) 42.0
 
April 6, 2019, 1 p.m. 21.5 ppb (20) 5.4 ppb (5) 17.5 ppb (16) 16.0 ppb (15) 15.1 ppb (14) 0.0 ppb (0) 4.0 ppb (3) 0.35 ppb (4) 12.0 μg/m3 (11) 10.0 μg/m3 (42) 42.0
 
April 6, 2019, noon 18.2 ppb (17) 2.2 ppb (2) 18.4 ppb (17) 16.0 ppb (15) 17.2 ppb (16) 0.0 ppb (0) 5.0 ppb (4) 0.34 ppb (4) 13.0 μg/m3 (12) 10.0 μg/m3 (42) 42.0
 
April 6, 2019, 11 a.m. 33.0 ppb (31) 10.6 ppb (10) 31.8 ppb (29) 22.0 ppb (20) 20.2 ppb (19) 0.0 ppb (0) 2.0 ppb (2) 0.37 ppb (4) 12.0 μg/m3 (11) 6.0 μg/m3 (25) 31.0