AQSQID: 060371103

Site Name: Los Angeles - N. Main Street

Location: LA (Chavez Ravine Place), CA

Reporting: True, Located: True

Current AQI: 79.0

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
Feb. 14, 2019, 2 p.m. 11.7 ppb (11) 1.4 ppb (1) 10.5 ppb (10) 10.0 ppb (9) 8.2 ppb (8) 0.0 ppb (0) 21.0 ppb (16) 0.22 ppb (2) 3.0 μg/m3 (3) 4.0 μg/m3 (17) 17.0
 
Feb. 14, 2019, 1 p.m. 13.5 ppb (12) 1.5 ppb (1) 11.7 ppb (11) 12.0 ppb (11) 9.6 ppb (9) 0.0 ppb (0) 18.0 ppb (14) 0.22 ppb (2) 3.0 μg/m3 (3) 4.0 μg/m3 (17) 17.0
 
Feb. 14, 2019, noon 9.8 ppb (9) 0.0 ppb (0) 8.5 ppb (8) 10.0 ppb (9) 8.1 ppb (8) 0.0 ppb (0) 20.0 ppb (15) 0.19 ppb (2) 2.0 μg/m3 (2) 3.0 μg/m3 (12) 15.0
 
Feb. 14, 2019, 11 a.m. 10.6 ppb (10) 0.2 ppb (0) 7.6 ppb (7) 10.0 ppb (9) 7.3 ppb (7) 0.0 ppb (0) 20.0 ppb (15) 0.19 ppb (2) 4.0 μg/m3 (4) 5.0 μg/m3 (21) 21.0
 
Feb. 14, 2019, 10 a.m. 8.5 ppb (8) 0.5 ppb (0) 8.1 ppb (8) 8.0 ppb (7) 7.0 ppb (6) 0.0 ppb (0) 23.0 ppb (18) 0.18 ppb (2) 6.0 μg/m3 (5) 8.0 μg/m3 (33) 33.0
 
Feb. 14, 2019, 9 a.m. 10.8 ppb (10) 0.6 ppb (1) 10.0 ppb (9) 10.0 ppb (9) 8.6 ppb (8) 0.0 ppb (0) 21.0 ppb (16) 0.2 ppb (2) 4.0 μg/m3 (4) 4.0 μg/m3 (17) 17.0
 
Feb. 14, 2019, 8 a.m. 10.0 ppb (9) -0.4 ppb (0) 10.2 ppb (9) 10.0 ppb (9) 9.9 ppb (9) 0.0 ppb (0) 22.0 ppb (17) 0.2 ppb (2) 5.0 μg/m3 (5) 3.0 μg/m3 (12) 17.0
 
Feb. 14, 2019, 7 a.m. 10.4 ppb (10) -0.4 ppb (0) 10.7 ppb (10) 11.0 ppb (10) 10.4 ppb (10) 0.0 ppb (0) 23.0 ppb (18) 0.23 ppb (3) 8.0 μg/m3 (7) 4.0 μg/m3 (17) 18.0
 
Feb. 14, 2019, 6 a.m. 9.4 ppb (9) -0.4 ppb (0) 8.7 ppb (8) 10.0 ppb (9) 8.4 ppb (8) 0.0 ppb (0) 25.0 ppb (19) 0.2 ppb (2) 10.0 μg/m3 (9) 3.0 μg/m3 (12) 19.0
 
Feb. 14, 2019, 5 a.m. 11.2 ppb (10) 0.5 ppb (0) 9.9 ppb (9) 11.0 ppb (10) 9.2 ppb (9) 0.0 ppb (0) 25.0 ppb (19) 0.22 ppb (2) 10.0 μg/m3 (9) 4.0 μg/m3 (17) 19.0
 
Feb. 14, 2019, 4 a.m. 10.2 ppb (9) -0.2 ppb (0) 10.0 ppb (9) 10.0 ppb (9) 9.5 ppb (9) 0.0 ppb (0) 27.0 ppb (21) 0.22 ppb (2) 10.0 μg/m3 (9) 4.0 μg/m3 (17) 21.0
 
Feb. 14, 2019, 3 a.m. 14.6 ppb (14) 1.0 ppb (1) 14.3 ppb (13) 14.0 ppb (13) 13.0 ppb (12) 0.0 ppb (0) 26.0 ppb (20) 0.24 ppb (3) 11.0 μg/m3 (10) 4.0 μg/m3 (17) 20.0
 
Feb. 14, 2019, 2 a.m. 14.8 ppb (14) 0.3 ppb (0) 15.0 ppb (14) 15.0 ppb (14) 13.9 ppb (13) 0.0 ppb (0) 26.0 ppb (20) 0.26 ppb (3) 12.0 μg/m3 (11) 6.0 μg/m3 (25) 25.0
 
Feb. 14, 2019, 1 a.m. 17.5 ppb (16) 0.5 ppb (0) 17.8 ppb (16) 17.0 ppb (16) 16.8 ppb (16) 0.0 ppb (0) 25.0 ppb (19) 0.27 ppb (3) 13.0 μg/m3 (12) 6.0 μg/m3 (25) 25.0
 
Feb. 14, 2019, midnight 13.2 ppb (12) 0.8 ppb (1) 12.6 ppb (12) 12.0 ppb (11) 11.0 ppb (10) 0.0 ppb (0) 31.0 ppb (24) 0.22 ppb (2) 12.0 μg/m3 (11) 5.0 μg/m3 (21) 24.0
 
Feb. 13, 2019, 11 p.m. 17.2 ppb (16) 3.9 ppb (4) 15.5 ppb (14) 13.0 ppb (12) 10.9 ppb (10) 0.0 ppb (0) 32.0 ppb (25) 0.21 ppb (2) 13.0 μg/m3 (12) 5.0 μg/m3 (21) 25.0
 
Feb. 13, 2019, 10 p.m. 10.1 ppb (9) 0.8 ppb (1) 9.6 ppb (9) 9.0 ppb (8) 8.0 ppb (7) 0.0 ppb (0) 36.0 ppb (28) 0.19 ppb (2) 15.0 μg/m3 (14) 2.0 μg/m3 (8) 28.0
 
Feb. 13, 2019, 9 p.m. 12.0 ppb (11) 1.6 ppb (1) 11.9 ppb (11) 10.0 ppb (9) 9.3 ppb (9) 0.0 ppb (0) 35.0 ppb (27) 0.19 ppb (2) 26.0 μg/m3 (24) 3.0 μg/m3 (12) 27.0
 
Feb. 13, 2019, 8 p.m. 18.6 ppb (17) 3.2 ppb (3) 18.7 ppb (17) 15.0 ppb (14) 14.8 ppb (14) 0.0 ppb (0) 31.0 ppb (24) 0.21 ppb (2) 19.0 μg/m3 (17) 4.0 μg/m3 (17) 24.0
 
Feb. 13, 2019, 7 p.m. 23.0 ppb (21) 4.4 ppb (4) 23.4 ppb (22) 19.0 ppb (18) 18.2 ppb (17) 0.0 ppb (0) 28.0 ppb (22) 0.25 ppb (3) 14.0 μg/m3 (13) 20.0 μg/m3 (67) 67.0
 
Feb. 13, 2019, 6 p.m. 45.4 ppb (42) 13.6 ppb (13) 47.2 ppb (44) 32.0 ppb (30) 32.1 ppb (30) 0.0 ppb (0) 14.0 ppb (11) 0.4 ppb (4) 30.0 μg/m3 (27) 3.0 μg/m3 (12) 44.0
 
Feb. 13, 2019, 5 p.m. 63.6 ppb (60) 26.0 ppb (24) 65.7 ppb (62) 38.0 ppb (35) 37.7 ppb (35) 0.0 ppb (0) 7.0 ppb (5) 0.59 ppb (7) 32.0 μg/m3 (29) 11.0 μg/m3 (46) 62.0
 
Feb. 13, 2019, 4 p.m. 82.5 ppb (80) 42.6 ppb (39) 84.7 ppb (83) 40.0 ppb (37) 40.0 ppb (37) 0.0 ppb (0) 3.0 ppb (2) 0.69 ppb (8) 54.0 μg/m3 (49) 16.0 μg/m3 (59) 83.0
 
Feb. 13, 2019, 3 p.m. 81.7 ppb (79) 43.9 ppb (41) 83.6 ppb (81) 38.0 ppb (35) 37.6 ppb (35) 1.0 ppb (1) 1.0 ppb (1) 0.61 ppb (7) N/A 26.0 μg/m3 (80) 81.0
 
Feb. 13, 2019, 2 p.m. 63.2 ppb (60) 28.2 ppb (26) 63.8 ppb (60) 35.0 ppb (32) 33.4 ppb (31) 0.0 ppb (0) 1.0 ppb (1) 0.58 ppb (6) 28.0 μg/m3 (25) 6.0 μg/m3 (25) 60.0
 
Feb. 13, 2019, 1 p.m. 61.9 ppb (58) 27.8 ppb (26) 58.3 ppb (55) 34.0 ppb (31) 30.6 ppb (28) 0.0 ppb (0) 1.0 ppb (1) 0.65 ppb (7) 26.0 μg/m3 (24) 7.0 μg/m3 (29) 58.0
 
Feb. 13, 2019, noon 64.6 ppb (61) 28.0 ppb (26) 64.4 ppb (61) 37.0 ppb (34) 36.3 ppb (34) 0.0 ppb (0) 1.0 ppb (1) 0.58 ppb (6) 23.0 μg/m3 (21) 8.0 μg/m3 (33) 61.0
 
Feb. 13, 2019, 11 a.m. 41.8 ppb (39) 5.0 ppb (5) 40.1 ppb (37) 37.0 ppb (34) 36.0 ppb (33) 0.0 ppb (0) 2.0 ppb (2) 0.43 ppb (5) 20.0 μg/m3 (18) 12.0 μg/m3 (50) 50.0
 
Feb. 13, 2019, 10 a.m. 47.2 ppb (44) 9.8 ppb (9) 49.3 ppb (46) 37.0 ppb (34) 39.1 ppb (36) 0.0 ppb (0) 2.0 ppb (2) 0.44 ppb (5) 22.0 μg/m3 (20) 11.0 μg/m3 (46) 46.0
 
Feb. 13, 2019, 9 a.m. 85.3 ppb (83) 46.1 ppb (43) 81.9 ppb (80) 39.0 ppb (36) 36.5 ppb (34) 0.0 ppb (0) 1.0 ppb (1) 0.47 ppb (5) 32.0 μg/m3 (29) 13.0 μg/m3 (52) 83.0
 
Feb. 13, 2019, 8 a.m. 89.9 ppb (88) 51.5 ppb (48) 99.1 ppb (98) 38.0 ppb (35) 41.0 ppb (38) 0.0 ppb (0) 1.0 ppb (1) 0.97 ppb (11) 41.0 μg/m3 (37) 15.0 μg/m3 (56) 98.0
 
Feb. 13, 2019, 7 a.m. 105.9 ppb (101) 66.4 ppb (63) 109.8 ppb (102) 40.0 ppb (37) 40.4 ppb (37) 1.0 ppb (1) 1.0 ppb (1) 1.29 ppb (14) 41.0 μg/m3 (37) 16.0 μg/m3 (59) 102.0
 
Feb. 13, 2019, 6 a.m. 134.8 ppb (106) 91.4 ppb (90) 144.7 ppb (108) 43.0 ppb (40) 43.8 ppb (41) 1.0 ppb (1) 1.0 ppb (1) 1.51 ppb (17) 48.0 μg/m3 (44) 17.0 μg/m3 (61) 108.0
 
Feb. 13, 2019, 5 a.m. 135.5 ppb (107) 90.2 ppb (89) 137.9 ppb (107) 45.0 ppb (42) 43.7 ppb (40) 1.0 ppb (1) 1.0 ppb (1) 1.5 ppb (17) 62.0 μg/m3 (54) 19.0 μg/m3 (65) 107.0
 
Feb. 13, 2019, 4 a.m. 123.6 ppb (104) 77.4 ppb (75) 134.4 ppb (106) 46.0 ppb (43) 49.2 ppb (46) 1.0 ppb (1) 1.0 ppb (1) 1.45 ppb (16) 56.0 μg/m3 (50) 17.0 μg/m3 (61) 106.0
 
Feb. 13, 2019, 3 a.m. 90.5 ppb (89) 43.0 ppb (40) 89.8 ppb (88) 47.0 ppb (44) 49.2 ppb (46) 0.0 ppb (0) 1.0 ppb (1) 1.1 ppb (12) 45.0 μg/m3 (41) 11.0 μg/m3 (46) 89.0
 
Feb. 13, 2019, 2 a.m. 69.1 ppb (66) 20.5 ppb (19) 72.4 ppb (70) 49.0 ppb (45) 50.9 ppb (47) 0.0 ppb (0) 1.0 ppb (1) 0.95 ppb (11) 43.0 μg/m3 (39) 14.0 μg/m3 (54) 70.0
 
Feb. 13, 2019, 1 a.m. 45.1 ppb (42) 4.9 ppb (5) 47.8 ppb (44) 40.0 ppb (37) 42.0 ppb (39) 0.0 ppb (0) 7.0 ppb (5) 0.45 ppb (5) 26.0 μg/m3 (24) 5.0 μg/m3 (21) 44.0
 
Feb. 13, 2019, midnight 25.0 ppb (23) 3.0 ppb (3) 25.4 ppb (24) 22.0 ppb (20) 21.7 ppb (20) 0.0 ppb (0) 25.0 ppb (19) 0.31 ppb (3) 16.0 μg/m3 (15) 4.0 μg/m3 (17) 24.0
 
Feb. 12, 2019, 11 p.m. 19.5 ppb (18) 3.2 ppb (3) 18.9 ppb (18) 16.0 ppb (15) 15.2 ppb (14) 0.0 ppb (0) 32.0 ppb (25) 0.25 ppb (3) 47.0 μg/m3 (43) 7.0 μg/m3 (29) 43.0
 
Feb. 12, 2019, 10 p.m. 13.4 ppb (12) 1.5 ppb (1) 13.1 ppb (12) 12.0 ppb (11) 10.8 ppb (10) 0.0 ppb (0) 37.0 ppb (28) 0.24 ppb (3) 53.0 μg/m3 (48) 6.0 μg/m3 (25) 48.0
 
Feb. 12, 2019, 9 p.m. 12.0 ppb (11) 1.4 ppb (1) 12.2 ppb (11) 11.0 ppb (10) 9.6 ppb (9) 0.0 ppb (0) 39.0 ppb (30) 0.22 ppb (2) 17.0 μg/m3 (15) 3.0 μg/m3 (12) 30.0
 
Feb. 12, 2019, 8 p.m. 19.1 ppb (18) 4.9 ppb (5) 19.1 ppb (18) 14.0 ppb (13) 12.7 ppb (12) 0.0 ppb (0) 35.0 ppb (27) 0.23 ppb (3) 24.0 μg/m3 (22) 4.0 μg/m3 (17) 27.0
 
Feb. 12, 2019, 7 p.m. 26.5 ppb (25) 7.8 ppb (7) 26.9 ppb (25) 19.0 ppb (18) 17.0 ppb (16) 0.0 ppb (0) 28.0 ppb (22) 0.29 ppb (3) 18.0 μg/m3 (16) 5.0 μg/m3 (21) 25.0
 
Feb. 12, 2019, 6 p.m. 28.7 ppb (27) 11.0 ppb (10) 30.9 ppb (29) 18.0 ppb (17) 18.3 ppb (17) 0.0 ppb (0) 27.0 ppb (21) 0.29 ppb (3) 26.0 μg/m3 (24) 4.0 μg/m3 (17) 29.0
 
Feb. 12, 2019, 5 p.m. 38.1 ppb (35) 17.0 ppb (16) 39.3 ppb (36) 21.0 ppb (19) 19.7 ppb (18) 0.0 ppb (0) 20.0 ppb (15) 0.38 ppb (4) 21.0 μg/m3 (19) 3.0 μg/m3 (12) 36.0
 
Feb. 12, 2019, 4 p.m. 57.8 ppb (54) 27.6 ppb (26) 58.7 ppb (55) 30.0 ppb (28) 27.9 ppb (26) 0.0 ppb (0) 10.0 ppb (8) 0.57 ppb (6) 26.0 μg/m3 (24) 5.0 μg/m3 (21) 55.0
 
Feb. 12, 2019, 3 p.m. 57.2 ppb (53) 24.2 ppb (22) 55.7 ppb (52) 33.0 ppb (31) 30.3 ppb (28) 0.0 ppb (0) 6.0 ppb (5) 0.51 ppb (6) 20.0 μg/m3 (18) 6.0 μg/m3 (25) 53.0
 
Feb. 12, 2019, 2 p.m. 40.9 ppb (38) 10.4 ppb (10) 40.9 ppb (38) 31.0 ppb (29) 29.2 ppb (27) 0.0 ppb (0) 7.0 ppb (5) 0.4 ppb (4) 20.0 μg/m3 (18) 6.0 μg/m3 (25) 38.0
 
Feb. 12, 2019, 1 p.m. 34.0 ppb (31) 4.7 ppb (4) 32.8 ppb (30) 29.0 ppb (27) 27.3 ppb (25) 0.0 ppb (0) 7.0 ppb (5) 0.41 ppb (5) 16.0 μg/m3 (15) 7.0 μg/m3 (29) 31.0
 
Feb. 12, 2019, noon 32.4 ppb (30) 4.6 ppb (4) 31.8 ppb (29) 28.0 ppb (26) 27.4 ppb (25) 0.0 ppb (0) 7.0 ppb (5) 0.37 ppb (4) 12.0 μg/m3 (11) 6.0 μg/m3 (25) 30.0
 
Feb. 12, 2019, 11 a.m. 33.8 ppb (31) 3.7 ppb (3) 32.7 ppb (30) 30.0 ppb (28) 28.9 ppb (27) 0.0 ppb (0) 4.0 ppb (3) 0.42 ppb (5) 17.0 μg/m3 (15) 5.0 μg/m3 (21) 31.0
 
Feb. 12, 2019, 10 a.m. 40.7 ppb (38) 9.3 ppb (9) 45.2 ppb (42) 31.0 ppb (29) 32.9 ppb (30) 0.0 ppb (0) 5.0 ppb (4) 0.5 ppb (6) 17.0 μg/m3 (15) 8.0 μg/m3 (33) 42.0
 
Feb. 12, 2019, 9 a.m. 51.0 ppb (47) 16.1 ppb (15) 53.5 ppb (50) 35.0 ppb (32) 34.2 ppb (32) 0.0 ppb (0) 2.0 ppb (2) 0.54 ppb (6) 17.0 μg/m3 (15) 11.0 μg/m3 (46) 50.0
 
Feb. 12, 2019, 8 a.m. 45.6 ppb (42) 13.6 ppb (13) 48.8 ppb (45) 32.0 ppb (30) 32.5 ppb (30) 0.0 ppb (0) 4.0 ppb (3) 0.58 ppb (6) 22.0 μg/m3 (20) 11.0 μg/m3 (46) 46.0
 
Feb. 12, 2019, 7 a.m. 54.6 ppb (51) 20.0 ppb (19) 61.2 ppb (58) 35.0 ppb (32) 37.0 ppb (34) 0.0 ppb (0) 1.0 ppb (1) 0.73 ppb (8) 25.0 μg/m3 (23) 15.0 μg/m3 (56) 58.0
 
Feb. 12, 2019, 6 a.m. 80.5 ppb (78) 45.2 ppb (42) 91.3 ppb (90) 35.0 ppb (32) 37.6 ppb (35) 0.0 ppb (0) 1.0 ppb (1) 1.04 ppb (12) 37.0 μg/m3 (34) 20.0 μg/m3 (67) 90.0
 
Feb. 12, 2019, 5 a.m. 66.2 ppb (63) 29.0 ppb (27) 78.7 ppb (76) 37.0 ppb (34) 40.1 ppb (37) 0.0 ppb (0) 1.0 ppb (1) 1.05 ppb (12) 36.0 μg/m3 (33) 15.0 μg/m3 (56) 76.0
 
Feb. 12, 2019, 4 a.m. 60.0 ppb (56) 21.1 ppb (20) 61.1 ppb (58) 39.0 ppb (36) 40.7 ppb (38) 0.0 ppb (0) 2.0 ppb (2) 0.9 ppb (10) 34.0 μg/m3 (31) 10.0 μg/m3 (42) 58.0
 
Feb. 12, 2019, 3 a.m. 30.3 ppb (28) 0.8 ppb (1) 31.3 ppb (29) 30.0 ppb (28) 30.4 ppb (28) 0.0 ppb (0) 14.0 ppb (11) 0.47 ppb (5) 37.0 μg/m3 (34) 9.0 μg/m3 (38) 38.0
 
Feb. 12, 2019, 2 a.m. 28.5 ppb (26) 0.2 ppb (0) 30.0 ppb (28) 28.0 ppb (26) 29.3 ppb (27) 0.0 ppb (0) 17.0 ppb (13) 0.47 ppb (5) 29.0 μg/m3 (26) 11.0 μg/m3 (46) 46.0
 
Feb. 12, 2019, 1 a.m. 25.9 ppb (24) 0.4 ppb (0) 27.0 ppb (25) 26.0 ppb (24) 25.9 ppb (24) 0.0 ppb (0) 21.0 ppb (16) 0.43 ppb (5) 30.0 μg/m3 (27) 8.0 μg/m3 (33) 33.0
 
Feb. 12, 2019, midnight 24.7 ppb (23) 2.7 ppb (3) 25.8 ppb (24) 22.0 ppb (20) 21.6 ppb (20) 0.0 ppb (0) 25.0 ppb (19) 0.38 ppb (4) 27.0 μg/m3 (25) 9.0 μg/m3 (38) 38.0
 
Feb. 11, 2019, 11 p.m. 17.0 ppb (16) 2.5 ppb (2) 17.4 ppb (16) 14.0 ppb (13) 13.4 ppb (12) 0.0 ppb (0) 35.0 ppb (27) 0.27 ppb (3) 14.0 μg/m3 (13) 3.0 μg/m3 (12) 27.0
 
Feb. 11, 2019, 10 p.m. 11.2 ppb (10) 1.6 ppb (1) 11.4 ppb (11) 10.0 ppb (9) 8.3 ppb (8) 0.0 ppb (0) 40.0 ppb (31) 0.21 ppb (2) 13.0 μg/m3 (12) 6.0 μg/m3 (25) 31.0
 
Feb. 11, 2019, 9 p.m. 12.4 ppb (11) 2.2 ppb (2) 12.7 ppb (12) 10.0 ppb (9) 8.6 ppb (8) 0.0 ppb (0) 37.0 ppb (28) 0.22 ppb (2) 12.0 μg/m3 (11) 3.0 μg/m3 (12) 28.0
 
Feb. 11, 2019, 8 p.m. 14.8 ppb (14) 3.7 ppb (3) 14.5 ppb (13) 11.0 ppb (10) 9.1 ppb (8) 0.0 ppb (0) 36.0 ppb (28) 0.21 ppb (2) 20.0 μg/m3 (18) 5.0 μg/m3 (21) 28.0
 
Feb. 11, 2019, 7 p.m. 16.0 ppb (15) 4.1 ppb (4) 15.8 ppb (15) 12.0 ppb (11) 10.0 ppb (9) 0.0 ppb (0) 34.0 ppb (26) 0.21 ppb (2) 22.0 μg/m3 (20) 4.0 μg/m3 (17) 26.0
 
Feb. 11, 2019, 6 p.m. 24.6 ppb (23) 9.5 ppb (9) 30.7 ppb (28) 16.0 ppb (15) 14.9 ppb (14) 0.0 ppb (0) 29.0 ppb (22) 0.26 ppb (3) 23.0 μg/m3 (21) 4.0 μg/m3 (17) 28.0
 
Feb. 11, 2019, 5 p.m. 24.7 ppb (23) 8.3 ppb (8) 24.0 ppb (22) 16.0 ppb (15) 13.4 ppb (12) 0.0 ppb (0) 25.0 ppb (19) 0.28 ppb (3) 31.0 μg/m3 (28) 4.0 μg/m3 (17) 28.0
 
Feb. 11, 2019, 4 p.m. 43.7 ppb (40) 18.8 ppb (17) 43.2 ppb (40) 25.0 ppb (23) 21.0 ppb (19) 0.0 ppb (0) 14.0 ppb (11) 0.5 ppb (6) 18.0 μg/m3 (16) 4.0 μg/m3 (17) 40.0
 
Feb. 11, 2019, 3 p.m. 65.9 ppb (63) 32.2 ppb (30) 66.1 ppb (63) 34.0 ppb (31) 32.2 ppb (30) 0.0 ppb (0) 5.0 ppb (4) 0.64 ppb (7) 23.0 μg/m3 (21) 5.0 μg/m3 (21) 63.0
 
Feb. 11, 2019, 2 p.m. 71.7 ppb (69) 34.7 ppb (32) 71.9 ppb (69) 37.0 ppb (34) 33.6 ppb (31) 0.0 ppb (0) 2.0 ppb (2) 0.66 ppb (7) 18.0 μg/m3 (16) 6.0 μg/m3 (25) 69.0
 
Feb. 11, 2019, 1 p.m. 42.6 ppb (39) 10.4 ppb (10) 43.2 ppb (40) 32.0 ppb (30) 29.4 ppb (27) 0.0 ppb (0) 4.0 ppb (3) 0.42 ppb (5) 11.0 μg/m3 (10) 3.0 μg/m3 (12) 40.0
 
Feb. 11, 2019, noon 27.1 ppb (25) 4.4 ppb (4) 15.7 ppb (15) 23.0 ppb (21) 15.2 ppb (14) 0.0 ppb (0) 16.0 ppb (12) 0.3 ppb (3) 8.0 μg/m3 (7) 3.0 μg/m3 (12) 25.0
 
Feb. 11, 2019, 11 a.m. 3.2 ppb (3) -0.7 ppb (0) 3.4 ppb (3) 4.0 ppb (4) 3.3 ppb (3) 0.0 ppb (0) 36.0 ppb (28) 0.18 ppb (2) 6.0 μg/m3 (5) 3.0 μg/m3 (12) 28.0
 
Feb. 11, 2019, 10 a.m. 3.8 ppb (4) -0.7 ppb (0) 3.4 ppb (3) 5.0 ppb (5) 3.3 ppb (3) 0.0 ppb (0) 36.0 ppb (28) 0.19 ppb (2) 5.0 μg/m3 (5) 3.0 μg/m3 (12) 28.0
 
Feb. 11, 2019, 9 a.m. 3.2 ppb (3) -0.7 ppb (0) 3.2 ppb (3) 4.0 ppb (4) 3.2 ppb (3) 0.0 ppb (0) 37.0 ppb (28) 0.19 ppb (2) 7.0 μg/m3 (6) 1.0 μg/m3 (4) 28.0
 
Feb. 11, 2019, 8 a.m. 2.2 ppb (2) -0.8 ppb (0) 1.8 ppb (2) 3.0 ppb (3) 1.7 ppb (2) 0.0 ppb (0) 39.0 ppb (30) 0.19 ppb (2) 6.0 μg/m3 (5) 2.0 μg/m3 (8) 30.0
 
Feb. 11, 2019, 7 a.m. 1.4 ppb (1) -0.8 ppb (0) 1.1 ppb (1) 2.0 ppb (2) 1.1 ppb (1) 0.0 ppb (0) 40.0 ppb (31) 0.17 ppb (2) 6.0 μg/m3 (5) 4.0 μg/m3 (17) 31.0
 
Feb. 11, 2019, 6 a.m. 0.9 ppb (1) -0.8 ppb (0) 0.5 ppb (0) 2.0 ppb (2) 0.4 ppb (0) 0.0 ppb (0) 41.0 ppb (32) 0.17 ppb (2) 7.0 μg/m3 (6) 2.0 μg/m3 (8) 32.0
 
Feb. 11, 2019, 5 a.m. 2.0 ppb (2) -0.7 ppb (0) 1.4 ppb (1) 3.0 ppb (3) 1.3 ppb (1) 0.0 ppb (0) 40.0 ppb (31) 0.18 ppb (2) 7.0 μg/m3 (6) 2.0 μg/m3 (8) 31.0
 
Feb. 11, 2019, 4 a.m. 2.5 ppb (2) -0.7 ppb (0) 2.0 ppb (2) 3.0 ppb (3) 1.9 ppb (2) 0.0 ppb (0) 38.0 ppb (29) 0.17 ppb (2) 7.0 μg/m3 (6) 6.0 μg/m3 (25) 29.0
 
Feb. 11, 2019, 3 a.m. 7.8 ppb (7) -0.6 ppb (0) 7.4 ppb (7) 8.0 ppb (7) 7.3 ppb (7) 0.0 ppb (0) 32.0 ppb (25) 0.23 ppb (3) 15.0 μg/m3 (14) 8.0 μg/m3 (33) 33.0
 
Feb. 11, 2019, 2 a.m. 5.7 ppb (5) -0.6 ppb (0) 4.6 ppb (4) 6.0 ppb (6) 4.5 ppb (4) 0.0 ppb (0) 37.0 ppb (28) 0.2 ppb (2) 14.0 μg/m3 (13) 6.0 μg/m3 (25) 28.0
 
Feb. 11, 2019, 1 a.m. 3.3 ppb (3) -0.7 ppb (0) 2.6 ppb (2) 4.0 ppb (4) 2.5 ppb (2) 0.0 ppb (0) 38.0 ppb (29) 0.18 ppb (2) 13.0 μg/m3 (12) 6.0 μg/m3 (25) 29.0
 
Feb. 11, 2019, midnight 2.9 ppb (3) -0.6 ppb (0) 1.9 ppb (2) 3.0 ppb (3) 1.7 ppb (2) 0.0 ppb (0) 38.0 ppb (29) 0.18 ppb (2) 16.0 μg/m3 (15) 4.0 μg/m3 (17) 29.0
 
Feb. 10, 2019, 11 p.m. 3.9 ppb (4) -0.3 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 36.0 ppb (28) 0.2 ppb (2) 8.0 μg/m3 (7) 3.0 μg/m3 (12) 28.0
 
Feb. 10, 2019, 10 p.m. 4.2 ppb (4) -0.4 ppb (0) 3.8 ppb (4) 5.0 ppb (5) 3.3 ppb (3) 0.0 ppb (0) 35.0 ppb (27) 0.19 ppb (2) 10.0 μg/m3 (9) 2.0 μg/m3 (8) 27.0
 
Feb. 10, 2019, 9 p.m. 4.3 ppb (4) -0.2 ppb (0) 4.0 ppb (4) 4.0 ppb (4) 3.3 ppb (3) 0.0 ppb (0) 37.0 ppb (28) 0.18 ppb (2) 13.0 μg/m3 (12) 2.0 μg/m3 (8) 28.0
 
Feb. 10, 2019, 8 p.m. 4.8 ppb (4) 0.1 ppb (0) 4.8 ppb (4) 5.0 ppb (5) 3.8 ppb (4) 0.0 ppb (0) 37.0 ppb (28) 0.18 ppb (2) 13.0 μg/m3 (12) 3.0 μg/m3 (12) 28.0
 
Feb. 10, 2019, 7 p.m. 5.5 ppb (5) 0.1 ppb (0) 5.6 ppb (5) 5.0 ppb (5) 4.6 ppb (4) 0.0 ppb (0) 37.0 ppb (28) 0.19 ppb (2) 12.0 μg/m3 (11) 1.0 μg/m3 (4) 28.0
 
Feb. 10, 2019, 6 p.m. 9.2 ppb (9) 0.8 ppb (1) 9.6 ppb (9) 8.0 ppb (7) 7.7 ppb (7) 0.0 ppb (0) 31.0 ppb (24) 0.23 ppb (3) 11.0 μg/m3 (10) 4.0 μg/m3 (17) 24.0
 
Feb. 10, 2019, 5 p.m. 19.2 ppb (18) 9.1 ppb (8) 20.9 ppb (19) 10.0 ppb (9) 8.1 ppb (8) 0.0 ppb (0) 26.0 ppb (20) 0.24 ppb (3) 21.0 μg/m3 (19) 7.0 μg/m3 (29) 29.0
 
Feb. 10, 2019, 4 p.m. 10.7 ppb (10) 2.1 ppb (2) 10.7 ppb (10) 9.0 ppb (8) 7.9 ppb (7) 0.0 ppb (0) 20.0 ppb (15) 0.25 ppb (3) 11.0 μg/m3 (10) 4.0 μg/m3 (17) 17.0
 
Feb. 10, 2019, 3 p.m. 13.6 ppb (13) 1.8 ppb (2) 15.1 ppb (14) 12.0 ppb (11) 12.4 ppb (11) 0.0 ppb (0) 13.0 ppb (10) 0.31 ppb (3) 9.0 μg/m3 (8) 6.0 μg/m3 (25) 25.0
 
Feb. 10, 2019, 2 p.m. 15.5 ppb (14) 0.4 ppb (0) 15.9 ppb (15) 15.0 ppb (14) 15.2 ppb (14) 0.0 ppb (0) 10.0 ppb (8) 0.34 ppb (4) 15.0 μg/m3 (14) 7.0 μg/m3 (29) 29.0
 
Feb. 10, 2019, 1 p.m. 13.7 ppb (13) 0.0 ppb (0) 12.9 ppb (12) 14.0 ppb (13) 12.7 ppb (12) 0.0 ppb (0) 11.0 ppb (8) 0.32 ppb (4) 12.0 μg/m3 (11) 5.0 μg/m3 (21) 21.0
 
Feb. 10, 2019, noon 22.5 ppb (21) 5.3 ppb (5) 20.1 ppb (19) 17.0 ppb (16) 15.7 ppb (15) 0.0 ppb (0) 7.0 ppb (5) 0.39 ppb (4) 13.0 μg/m3 (12) 4.0 μg/m3 (17) 21.0
 
Feb. 10, 2019, 11 a.m. 12.8 ppb (12) 0.1 ppb (0) 12.2 ppb (11) 13.0 ppb (12) 11.9 ppb (11) 0.0 ppb (0) 13.0 ppb (10) 0.37 ppb (4) 12.0 μg/m3 (11) 4.0 μg/m3 (17) 17.0
 
Feb. 10, 2019, 10 a.m. 11.7 ppb (11) -0.1 ppb (0) 11.5 ppb (11) 12.0 ppb (11) 11.5 ppb (11) 0.0 ppb (0) 14.0 ppb (11) 0.32 ppb (4) 15.0 μg/m3 (14) 6.0 μg/m3 (25) 25.0
 
Feb. 10, 2019, 9 a.m. 15.6 ppb (14) 0.2 ppb (0) 16.0 ppb (15) 15.0 ppb (14) 15.3 ppb (14) 0.0 ppb (0) 11.0 ppb (8) 0.38 ppb (4) 19.0 μg/m3 (17) 9.0 μg/m3 (38) 38.0
 
Feb. 10, 2019, 8 a.m. 21.3 ppb (20) 1.4 ppb (1) 26.2 ppb (24) 20.0 ppb (19) 24.5 ppb (23) 0.0 ppb (0) 8.0 ppb (6) 0.46 ppb (5) 27.0 μg/m3 (25) 10.0 μg/m3 (42) 42.0
 
Feb. 10, 2019, 7 a.m. 23.1 ppb (21) 0.8 ppb (1) 26.7 ppb (25) 22.0 ppb (20) 25.4 ppb (24) 0.0 ppb (0) 7.0 ppb (5) 0.52 ppb (6) 22.0 μg/m3 (20) 18.0 μg/m3 (63) 63.0
 
Feb. 10, 2019, 6 a.m. 27.7 ppb (26) 3.1 ppb (3) 28.1 ppb (26) 25.0 ppb (23) 25.4 ppb (24) 0.0 ppb (0) 4.0 ppb (3) 0.6 ppb (7) 30.0 μg/m3 (27) 11.0 μg/m3 (46) 46.0
 
Feb. 10, 2019, 5 a.m. 33.1 ppb (31) 4.3 ppb (4) 32.8 ppb (30) 29.0 ppb (27) 29.0 ppb (27) 0.0 ppb (0) 3.0 ppb (2) 0.71 ppb (8) 23.0 μg/m3 (21) 10.0 μg/m3 (42) 42.0
 
Feb. 10, 2019, 4 a.m. 27.1 ppb (25) 1.5 ppb (1) 28.7 ppb (27) 26.0 ppb (24) 26.7 ppb (25) 0.0 ppb (0) 8.0 ppb (6) 0.61 ppb (7) 25.0 μg/m3 (23) 5.0 μg/m3 (21) 27.0
 
Feb. 10, 2019, 3 a.m. 11.9 ppb (11) -0.3 ppb (0) 10.7 ppb (10) 12.0 ppb (11) 10.7 ppb (10) 0.0 ppb (0) 27.0 ppb (21) 0.26 ppb (3) 16.0 μg/m3 (15) 4.0 μg/m3 (17) 21.0
 
Feb. 10, 2019, 2 a.m. 4.3 ppb (4) -0.7 ppb (0) 4.4 ppb (4) 5.0 ppb (5) 4.3 ppb (4) 0.0 ppb (0) 37.0 ppb (28) 0.18 ppb (2) 13.0 μg/m3 (12) 6.0 μg/m3 (25) 28.0
 
Feb. 10, 2019, 1 a.m. 4.5 ppb (4) -0.6 ppb (0) 4.7 ppb (4) 5.0 ppb (5) 4.6 ppb (4) 0.0 ppb (0) 38.0 ppb (29) 0.18 ppb (2) 13.0 μg/m3 (12) 6.0 μg/m3 (25) 29.0
 
Feb. 10, 2019, midnight 4.1 ppb (4) -0.3 ppb (0) 4.0 ppb (4) 4.0 ppb (4) 3.5 ppb (3) 0.0 ppb (0) 39.0 ppb (30) 0.17 ppb (2) 13.0 μg/m3 (12) 5.0 μg/m3 (21) 30.0
 
Feb. 9, 2019, 11 p.m. 4.8 ppb (4) 0.1 ppb (0) 5.0 ppb (5) 5.0 ppb (5) 3.9 ppb (4) 0.0 ppb (0) 40.0 ppb (31) 0.19 ppb (2) 11.0 μg/m3 (10) 4.0 μg/m3 (17) 31.0
 
Feb. 9, 2019, 10 p.m. 5.2 ppb (5) 0.2 ppb (0) 5.4 ppb (5) 5.0 ppb (5) 4.3 ppb (4) 0.0 ppb (0) 40.0 ppb (31) 0.18 ppb (2) 9.0 μg/m3 (8) 4.0 μg/m3 (17) 31.0
 
Feb. 9, 2019, 9 p.m. 6.0 ppb (6) 0.6 ppb (1) 6.2 ppb (6) 5.0 ppb (5) 4.6 ppb (4) 0.0 ppb (0) 37.0 ppb (28) 0.19 ppb (2) 8.0 μg/m3 (7) 0.0 μg/m3 (0) 28.0
 
Feb. 9, 2019, 8 p.m. 6.0 ppb (6) 0.6 ppb (1) 5.8 ppb (5) 5.0 ppb (5) 4.5 ppb (4) 0.0 ppb (0) 35.0 ppb (27) 0.19 ppb (2) 10.0 μg/m3 (9) 3.0 μg/m3 (12) 27.0
 
Feb. 9, 2019, 7 p.m. 6.6 ppb (6) 0.4 ppb (0) 7.0 ppb (6) 6.0 ppb (6) 5.7 ppb (5) 0.0 ppb (0) 36.0 ppb (28) 0.2 ppb (2) 11.0 μg/m3 (10) 4.0 μg/m3 (17) 28.0
 
Feb. 9, 2019, 6 p.m. 15.8 ppb (15) 7.1 ppb (7) 14.5 ppb (13) 9.0 ppb (8) 7.9 ppb (7) 0.0 ppb (0) 33.0 ppb (25) 0.21 ppb (2) 16.0 μg/m3 (15) 5.0 μg/m3 (21) 25.0
 
Feb. 9, 2019, 5 p.m. 12.5 ppb (12) 3.4 ppb (3) 12.9 ppb (12) 9.0 ppb (8) 7.7 ppb (7) 0.0 ppb (0) 30.0 ppb (23) 0.21 ppb (2) 11.0 μg/m3 (10) 6.0 μg/m3 (25) 25.0
 
Feb. 9, 2019, 4 p.m. 17.1 ppb (16) 7.5 ppb (7) 15.2 ppb (14) 10.0 ppb (9) 6.7 ppb (6) 0.0 ppb (0) 28.0 ppb (22) 0.24 ppb (3) 11.0 μg/m3 (10) 7.0 μg/m3 (29) 29.0
 
Feb. 9, 2019, 3 p.m. 10.7 ppb (10) 0.3 ppb (0) 11.2 ppb (10) 10.0 ppb (9) 10.1 ppb (9) 0.0 ppb (0) 26.0 ppb (20) 0.25 ppb (3) 14.0 μg/m3 (13) 7.0 μg/m3 (29) 29.0
 
Feb. 9, 2019, 2 p.m. 12.7 ppb (12) 0.3 ppb (0) 12.1 ppb (11) 12.0 ppb (11) 11.5 ppb (11) 0.0 ppb (0) 21.0 ppb (16) 0.26 ppb (3) 15.0 μg/m3 (14) 11.0 μg/m3 (46) 46.0
 
Feb. 9, 2019, 1 p.m. 21.6 ppb (20) 0.6 ppb (1) 17.4 ppb (16) 21.0 ppb (19) 16.6 ppb (15) 0.0 ppb (0) 11.0 ppb (8) 0.36 ppb (4) 25.0 μg/m3 (23) 14.0 μg/m3 (54) 54.0
 
Feb. 9, 2019, noon 26.9 ppb (25) 1.0 ppb (1) 25.9 ppb (24) 26.0 ppb (24) 25.1 ppb (23) 0.0 ppb (0) 8.0 ppb (6) 0.41 ppb (5) 27.0 μg/m3 (25) 15.0 μg/m3 (56) 56.0
 
Feb. 9, 2019, 11 a.m. 21.0 ppb (19) 1.2 ppb (1) 20.7 ppb (19) 20.0 ppb (19) 19.5 ppb (18) 0.0 ppb (0) 9.0 ppb (7) 0.38 ppb (4) 26.0 μg/m3 (24) 14.0 μg/m3 (54) 54.0
 
Feb. 9, 2019, 10 a.m. 27.1 ppb (25) 1.8 ppb (2) 31.4 ppb (29) 25.0 ppb (23) 28.7 ppb (27) 0.0 ppb (0) 5.0 ppb (4) 0.48 ppb (5) 31.0 μg/m3 (28) 15.0 μg/m3 (56) 56.0
 
Feb. 9, 2019, 9 a.m. 45.5 ppb (42) 16.8 ppb (16) 44.9 ppb (42) 29.0 ppb (27) 28.2 ppb (26) 0.0 ppb (0) 1.0 ppb (1) 0.77 ppb (9) 36.0 μg/m3 (33) 20.0 μg/m3 (67) 67.0
 
Feb. 9, 2019, 8 a.m. 45.0 ppb (42) 15.0 ppb (14) 43.2 ppb (40) 30.0 ppb (28) 32.7 ppb (30) 0.0 ppb (0) 2.0 ppb (2) 0.78 ppb (9) 25.0 μg/m3 (23) 12.0 μg/m3 (50) 50.0
 
Feb. 9, 2019, 7 a.m. 41.9 ppb (39) 9.2 ppb (9) 43.5 ppb (40) 33.0 ppb (31) 35.2 ppb (33) 0.0 ppb (0) 2.0 ppb (2) 0.73 ppb (8) 37.0 μg/m3 (34) 17.0 μg/m3 (61) 61.0
 
Feb. 9, 2019, 6 a.m. 42.6 ppb (39) 7.9 ppb (7) 46.7 ppb (43) 35.0 ppb (32) 38.8 ppb (36) 0.0 ppb (0) 2.0 ppb (2) 0.78 ppb (9) 33.0 μg/m3 (30) 15.0 μg/m3 (56) 56.0
 
Feb. 9, 2019, 5 a.m. 47.5 ppb (44) 9.0 ppb (8) 52.3 ppb (48) 38.0 ppb (35) 42.2 ppb (39) 0.0 ppb (0) 2.0 ppb (2) 0.73 ppb (8) 37.0 μg/m3 (34) 16.0 μg/m3 (59) 59.0
 
Feb. 9, 2019, 4 a.m. 38.7 ppb (36) 7.3 ppb (7) 39.9 ppb (37) 31.0 ppb (29) 31.8 ppb (29) 0.0 ppb (0) 11.0 ppb (8) 0.66 ppb (7) 27.0 μg/m3 (25) 8.0 μg/m3 (33) 37.0
 
Feb. 9, 2019, 3 a.m. 15.2 ppb (14) -0.2 ppb (0) 16.1 ppb (15) 15.0 ppb (14) 15.8 ppb (15) 0.0 ppb (0) 32.0 ppb (25) 0.31 ppb (3) 17.0 μg/m3 (15) 12.0 μg/m3 (50) 50.0
 
Feb. 9, 2019, 2 a.m. 10.1 ppb (9) -0.5 ppb (0) 11.0 ppb (10) 11.0 ppb (10) 10.9 ppb (10) 0.0 ppb (0) 37.0 ppb (28) 0.26 ppb (3) 22.0 μg/m3 (20) 15.0 μg/m3 (56) 56.0
 
Feb. 9, 2019, 1 a.m. 14.5 ppb (13) -0.2 ppb (0) 15.8 ppb (15) 15.0 ppb (14) 15.2 ppb (14) 0.0 ppb (0) 32.0 ppb (25) 0.28 ppb (3) 23.0 μg/m3 (21) 9.0 μg/m3 (38) 38.0
 
Feb. 9, 2019, midnight 18.2 ppb (17) 1.2 ppb (1) 19.7 ppb (18) 17.0 ppb (16) 17.5 ppb (16) 1.0 ppb (1) 31.0 ppb (24) 0.29 ppb (3) 27.0 μg/m3 (25) 10.0 μg/m3 (42) 42.0
 
Feb. 8, 2019, 11 p.m. 21.2 ppb (20) 3.0 ppb (3) 23.5 ppb (22) 18.0 ppb (17) 18.9 ppb (18) 1.0 ppb (1) 33.0 ppb (25) 0.32 ppb (4) 31.0 μg/m3 (28) 12.0 μg/m3 (50) 50.0
 
Feb. 8, 2019, 10 p.m. 24.0 ppb (22) 4.5 ppb (4) 26.1 ppb (24) 20.0 ppb (19) 19.7 ppb (18) 1.0 ppb (1) 32.0 ppb (25) 0.33 ppb (4) 36.0 μg/m3 (33) 11.0 μg/m3 (46) 46.0
 
Feb. 8, 2019, 9 p.m. 17.9 ppb (17) 3.5 ppb (3) 19.1 ppb (18) 14.0 ppb (13) 13.5 ppb (12) 0.0 ppb (0) 37.0 ppb (28) 0.28 ppb (3) 28.0 μg/m3 (25) 10.0 μg/m3 (42) 42.0
 
Feb. 8, 2019, 8 p.m. 18.7 ppb (17) 4.1 ppb (4) 20.6 ppb (19) 15.0 ppb (14) 14.7 ppb (14) 0.0 ppb (0) 35.0 ppb (27) 0.26 ppb (3) 27.0 μg/m3 (25) 9.0 μg/m3 (38) 38.0
 
Feb. 8, 2019, 7 p.m. 26.1 ppb (24) 7.7 ppb (7) 27.7 ppb (26) 18.0 ppb (17) 17.8 ppb (16) 0.0 ppb (0) 28.0 ppb (22) 0.3 ppb (3) 23.0 μg/m3 (21) 6.0 μg/m3 (25) 26.0
 
Feb. 8, 2019, 6 p.m. 30.7 ppb (28) 12.4 ppb (11) 34.4 ppb (32) 18.0 ppb (17) 19.2 ppb (18) 0.0 ppb (0) 27.0 ppb (21) 0.28 ppb (3) 17.0 μg/m3 (15) 6.0 μg/m3 (25) 32.0
 
Feb. 8, 2019, 5 p.m. 44.2 ppb (41) 20.5 ppb (19) 45.4 ppb (42) 24.0 ppb (22) 22.1 ppb (20) 0.0 ppb (0) 17.0 ppb (13) 0.44 ppb (5) 27.0 μg/m3 (25) 8.0 μg/m3 (33) 42.0
 
Feb. 8, 2019, 4 p.m. 68.1 ppb (65) 37.2 ppb (34) 70.4 ppb (67) 31.0 ppb (29) 29.9 ppb (28) 0.0 ppb (0) 7.0 ppb (5) 0.65 ppb (7) 32.0 μg/m3 (29) 11.0 μg/m3 (46) 67.0
 
Feb. 8, 2019, 3 p.m. 89.5 ppb (88) 55.5 ppb (52) 91.6 ppb (90) 34.0 ppb (31) 33.7 ppb (31) 0.0 ppb (0) 2.0 ppb (2) 0.74 ppb (8) 30.0 μg/m3 (27) 14.0 μg/m3 (54) 90.0
 
Feb. 8, 2019, 2 p.m. 78.2 ppb (76) 45.0 ppb (42) 79.5 ppb (77) 33.0 ppb (31) 33.0 ppb (31) 0.0 ppb (0) 1.0 ppb (1) 0.74 ppb (8) 43.0 μg/m3 (39) 17.0 μg/m3 (61) 77.0
 
Feb. 8, 2019, 1 p.m. 52.8 ppb (49) 21.6 ppb (20) 55.0 ppb (51) 31.0 ppb (29) 29.3 ppb (27) 0.0 ppb (0) 1.0 ppb (1) 0.53 ppb (6) 20.0 μg/m3 (18) 7.0 μg/m3 (29) 51.0
 
Feb. 8, 2019, noon 43.6 ppb (40) 12.9 ppb (12) 43.9 ppb (41) 31.0 ppb (29) 31.5 ppb (29) 0.0 ppb (0) 1.0 ppb (1) 0.45 ppb (5) 21.0 μg/m3 (19) 7.0 μg/m3 (29) 41.0
 
Feb. 8, 2019, 11 a.m. 38.3 ppb (35) 8.2 ppb (8) 37.8 ppb (35) 30.0 ppb (28) 29.4 ppb (27) 0.0 ppb (0) 2.0 ppb (2) 0.46 ppb (5) 22.0 μg/m3 (20) 8.0 μg/m3 (33) 35.0
 
Feb. 8, 2019, 10 a.m. 42.6 ppb (39) 10.7 ppb (10) 47.0 ppb (44) 32.0 ppb (30) 33.9 ppb (31) 0.0 ppb (0) 1.0 ppb (1) 0.53 ppb (6) 27.0 μg/m3 (25) 15.0 μg/m3 (56) 56.0
 
Feb. 8, 2019, 9 a.m. 55.6 ppb (52) 20.9 ppb (19) 57.7 ppb (54) 35.0 ppb (32) 33.3 ppb (31) 0.0 ppb (0) 1.0 ppb (1) 0.62 ppb (7) 31.0 μg/m3 (28) 13.0 μg/m3 (52) 54.0
 
Feb. 8, 2019, 8 a.m. 54.1 ppb (50) 18.5 ppb (17) 58.2 ppb (54) 36.0 ppb (33) 38.4 ppb (36) 0.0 ppb (0) 1.0 ppb (1) 0.66 ppb (7) 25.0 μg/m3 (23) 16.0 μg/m3 (59) 59.0
 
Feb. 8, 2019, 7 a.m. 49.2 ppb (46) 13.3 ppb (12) 54.8 ppb (51) 36.0 ppb (33) 38.5 ppb (36) 0.0 ppb (0) 2.0 ppb (2) 0.64 ppb (7) 33.0 μg/m3 (30) 17.0 μg/m3 (61) 61.0
 
Feb. 8, 2019, 6 a.m. 41.0 ppb (38) 6.1 ppb (6) 45.2 ppb (42) 35.0 ppb (32) 38.0 ppb (35) 0.0 ppb (0) 2.0 ppb (2) 0.61 ppb (7) 29.0 μg/m3 (26) 13.0 μg/m3 (52) 52.0
 
Feb. 8, 2019, 5 a.m. 68.2 ppb (65) 30.4 ppb (28) 68.2 ppb (65) 38.0 ppb (35) 39.9 ppb (37) 0.0 ppb (0) 1.0 ppb (1) 0.96 ppb (11) 38.0 μg/m3 (35) 17.0 μg/m3 (61) 65.0
 
Feb. 8, 2019, 4 a.m. 46.5 ppb (43) 9.9 ppb (9) 49.6 ppb (46) 37.0 ppb (34) 39.0 ppb (36) 0.0 ppb (0) 4.0 ppb (3) 0.8 ppb (9) 37.0 μg/m3 (34) 12.0 μg/m3 (50) 50.0
 
Feb. 8, 2019, 3 a.m. 30.4 ppb (28) 1.8 ppb (2) 31.5 ppb (29) 29.0 ppb (27) 29.6 ppb (27) 0.0 ppb (0) 14.0 ppb (11) 0.53 ppb (6) 26.0 μg/m3 (24) 9.0 μg/m3 (38) 38.0
 
Feb. 8, 2019, 2 a.m. 24.9 ppb (23) 0.3 ppb (0) 26.3 ppb (24) 25.0 ppb (23) 25.5 ppb (24) 0.0 ppb (0) 22.0 ppb (17) 0.45 ppb (5) 25.0 μg/m3 (23) 11.0 μg/m3 (46) 46.0
 
Feb. 8, 2019, 1 a.m. 23.7 ppb (22) 0.4 ppb (0) 25.3 ppb (23) 23.0 ppb (21) 24.2 ppb (22) 0.0 ppb (0) 24.0 ppb (18) 0.42 ppb (5) 24.0 μg/m3 (22) 9.0 μg/m3 (38) 38.0
 
Feb. 8, 2019, midnight 19.3 ppb (18) 1.4 ppb (1) 20.5 ppb (19) 18.0 ppb (17) 18.0 ppb (17) 0.0 ppb (0) 30.0 ppb (23) 0.32 ppb (4) 26.0 μg/m3 (24) 10.0 μg/m3 (42) 42.0
 
Feb. 7, 2019, 11 p.m. 17.8 ppb (16) 3.6 ppb (3) 17.7 ppb (16) 14.0 ppb (13) 12.2 ppb (11) 0.0 ppb (0) 33.0 ppb (25) 0.24 ppb (3) 21.0 μg/m3 (19) 9.0 μg/m3 (38) 38.0
 
Feb. 7, 2019, 10 p.m. 12.3 ppb (11) 2.3 ppb (2) 13.1 ppb (12) 10.0 ppb (9) 9.3 ppb (9) 0.0 ppb (0) 36.0 ppb (28) 0.22 ppb (2) 17.0 μg/m3 (15) 7.0 μg/m3 (29) 29.0
 
Feb. 7, 2019, 9 p.m. 14.3 ppb (13) 3.1 ppb (3) 15.1 ppb (14) 11.0 ppb (10) 10.3 ppb (10) 0.0 ppb (0) 33.0 ppb (25) 0.23 ppb (3) 22.0 μg/m3 (20) 10.0 μg/m3 (42) 42.0
 
Feb. 7, 2019, 8 p.m. 16.7 ppb (15) 4.2 ppb (4) 17.3 ppb (16) 12.0 ppb (11) 11.3 ppb (10) 0.0 ppb (0) 31.0 ppb (24) 0.24 ppb (3) 20.0 μg/m3 (18) 21.0 μg/m3 (69) 69.0
 
Feb. 7, 2019, 7 p.m. 17.2 ppb (16) 4.8 ppb (4) 17.8 ppb (16) 12.0 ppb (11) 11.3 ppb (10) 0.0 ppb (0) 30.0 ppb (23) 0.24 ppb (3) N/A N/A 23.0
 
Feb. 7, 2019, 6 p.m. 18.7 ppb (17) 5.3 ppb (5) 19.4 ppb (18) 13.0 ppb (12) 12.3 ppb (11) 0.0 ppb (0) 28.0 ppb (22) 0.28 ppb (3) N/A N/A 22.0
 
Feb. 7, 2019, 5 p.m. 48.3 ppb (45) 21.9 ppb (20) 50.0 ppb (46) 26.0 ppb (24) 25.0 ppb (23) 0.0 ppb (0) 14.0 ppb (11) 0.49 ppb (5) 23.0 μg/m3 (21) 8.0 μg/m3 (33) 46.0
 
Feb. 7, 2019, 4 p.m. 63.7 ppb (60) 33.3 ppb (31) 66.1 ppb (63) 30.0 ppb (28) 28.3 ppb (26) 0.0 ppb (0) 8.0 ppb (6) 0.54 ppb (6) 24.0 μg/m3 (22) 12.0 μg/m3 (50) 63.0
 
Feb. 7, 2019, 3 p.m. 75.3 ppb (73) 42.1 ppb (39) 77.0 ppb (74) 33.0 ppb (31) 31.6 ppb (29) 0.0 ppb (0) 3.0 ppb (2) 0.62 ppb (7) 23.0 μg/m3 (21) 8.0 μg/m3 (33) 74.0