Table 1 Statistical summary of air pollutant concentrations (including BC) and meteorological variables(a) recorded during the study period (2022) for the two sampling sites. For the APO site, N = 7,659 (for all retained variables), and for the SCT site, N = 6,804).
From: Assessing black carbon sources with aethalometer data and ambient ΔBC/ΔCO ratios analysis
Metricb | BC (ng/m3) | CO (ppm) | NO2 (ppb) | NO (ppb) | O3 (ppb) | PM10 (µg/m3) | PM2.5 (µg/m3) | SO2 (ppb) | RH (%) | T (°C) | WS (km/h) | WD ( ° ) | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
APO Site | ||||||||||||||||
Mean | 2,137.16 | 1.51 | 12.56 | 13.35 | 18.66 | 70.35 | 20.45 | 4.60 | 54.39 | 23.76 | 9.62 | 156.48 | ||||
Std | 1,644.65 | 0.38 | 16.89 | 9.20 | 13.11 | 43.88 | 13.52 | 3.87 | 22.28 | 7.95 | 5.88 | 95.11 | ||||
Min | 0.00 | 0.17 | 0.30 | 0.00 | 2.00 | 3.00 | 2.00 | 0.70 | 1.00 | 0.00 | 0.30 | 0.00 | ||||
25%c | 1,106.71 | 1.34 | 4.00 | 6.80 | 9.00 | 44.00 | 11.00 | 2.36 | 36.00 | 18.87 | 5.70 | 105.00 | ||||
Median | 1,802.93 | 1.51 | 7.90 | 11.10 | 15.00 | 61.00 | 18.00 | 3.23 | 56.00 | 24.76 | 8.70 | 128.00 | ||||
75%c | 2,640.10 | 1.69 | 13.80 | 17.80 | 25.00 | 84.00 | 27.00 | 5.18 | 72.00 | 29.19 | 12.30 | 159.00 | ||||
Max | 17,524.82 | 4.01 | 210.00 | 77.50 | 103.00 | 799.00 | 168.00 | 39.90 | 94.00 | 43.00 | 77.80 | 360.00 | ||||
SCT Site | ||||||||||||||||
Mean | 2,027.78 | 1.17 | 18.92 | 20.00 | 25.32 | 66.58 | 26.09 | 5.67 | 54.47 | 20.90 | 8.41 | 146.27 | ||||
Std | 2,066.81 | 0.62 | 33.44 | 12.56 | 20.76 | 48.85 | 19.61 | 3.29 | 22.32 | 7.63 | 4.68 | 79.08 | ||||
Min | 0.00 | 0.14 | 1.60 | 1.40 | 1.00 | 5.00 | 2.28 | 2.20 | 1.00 | -2.60 | 0.20 | 1.00 | ||||
25% | 739.60 | 0.68 | 4.10 | 10.40 | 8.00 | 36.00 | 13.28 | 3.65 | 38.00 | 15.76 | 4.40 | 99.00 | ||||
Median | 1,280.26 | 1.20 | 6.70 | 16.80 | 21.00 | 52.00 | 20.68 | 4.70 | 55.00 | 21.96 | 7.90 | 116.00 | ||||
75% | 2,439.65 | 1.46 | 15.40 | 26.80 | 37.00 | 79.00 | 32.35 | 6.50 | 73.00 | 26.18 | 11.80 | 153.00 | ||||
Max | 17,998.75 | 5.92 | 333.60 | 88.90 | 141.00 | 709.00 | 238.00 | 55.25 | 96.00 | 40.52 | 26.00 | 360.00 | ||||
