Pollutants | Statistics | Season | Annual | |||
Winter | Spring | Summer | Autumn | |||
O3 (ppb) | Min. | 7.96 | 7.40 | 8.05 | 5.44 | 5.44 |
Max. | 30.54 | 50.68 | 41.52 | 46.05 | 50.68 | |
Median | 16.49 | 26.08 | 24.40 | 19.88 | 20.92 | |
Mean | 17.20 | 25.79 | 24.91 | 20.94 | 22.51 | |
S.D. | 4.10 | 9.93 | 8.87 | 8.45 | 8.97 | |
NOx (ppb) | Min. | 15.00 | 16.28 | 19.56 | 8.83 | 8.83 |
Max. | 59.04 | 89.70 | 89.70 | 61.80 | 89.70 | |
Median | 27.58 | 28.80 | 26.72 | 41.36 | 31.12 | |
Mean | 29.16 | 30.41 | 29.26 | 42.53 | 32.84 | |
S.D. | 9.14 | 9.85 | 9.18 | 8.55 | 9.18 | |
NO2 (ppb) | Min. | 8.88 | 9.68 | 9.36 | 5.42 | 5.42 |
Max. | 23.32 | 36.74 | 25.68 | 31.00 | 36.74 | |
Median | 15.98 | 16.68 | 14.04 | 21.12 | 16.96 | |
Mean | 15.98 | 17.00 | 14.85 | 21.17 | 17.25 | |
S.D. | 3.42 | 3.55 | 3.43 | 3.16 | 3.39 | |
NO (ppb) | Min. | 6.04 | 6.16 | 6.36 | 6.67 | 6.04 |
Max. | 34.48 | 25.28 | 27.68 | 45.47 | 45.47 | |
Median | 14.60 | 12.44 | 11.54 | 18.68 | 14.32 | |
Mean | 16.03 | 13.58 | 12.32 | 20.38 | 15.58 | |
S.D. | 7.10 | 5.31 | 3.94 | 6.92 | 5.82 | |
SO2 (ppb) | Min. | 2.44 | 1.00 | 1.23 | 5.20 | 1.00 |
Max. | 13.08 | 22.60 | 53.56 | 25.88 | 53.56 | |
Median | 3.54 | 4.72 | 3.06 | 8.72 | 5.01 | |
Mean | 4.39 | 6.48 | 5.51 | 10.24 | 6.66 | |
S.D. | 2.17 | 4.53 | 7.14 | 4.50 | 4.59 | |
CO (ppb) | Min. | 76.00 | 32.92 | 32.92 | 66.67 | 32.92 |
Max. | 336.80 | 377.60 | 266.80 | 1006.67 | 1006.67 | |
Median | 153.20 | 153.60 | 123.40 | 162.40 | 148.15 | |
Mean | 161.42 | 170.86 | 134.00 | 194.25 | 165.13 | |
S.D. | 57.70 | 69.27 | 52.13 | 132.02 | 77.78 | |
THC (ppm) | Min. | 3.59 | 1.39 | 1.39 | 0.76 | 0.76 |
Max. | 5.45 | 4.81 | 6.27 | 5.58 | 6.27 | |
Median | 4.51 | 2.59 | 4.18 | 4.31 | 3.90 | |
Mean | 4.55 | 2.90 | 4.01 | 4.05 | 3.88 | |
S.D. | 0.43 | 0.78 | 1.27 | 0.96 | 0.86 | |
CH4 (ppm) | Min. | 3.19 | 1.24 | 1.34 | 0.64 | 0.64 |
Max. | 4.99 | 4.70 | 5.65 | 4.85 | 5.65 | |
Median | 4.15 | 2.57 | 3.55 | 3.65 | 3.48 | |
Mean | 4.15 | 2.58 | 3.61 | 3.42 | 3.44 | |
S.D. | 0.46 | 0.77 | 1.25 | 0.84 | 0.83 | |
TNMHC (ppm) | Min. | 0.31 | 0.10 | 0.22 | 0.42 | 0.10 |
Max. | 0.55 | 3.45 | 1.11 | 0.90 | 3.45 | |
Median | 0.42 | 0.56 | 0.41 | 0.67 | 0.52 | |
Mean | 0.42 | 0.70 | 0.43 | 0.67 | 0.56 | |
S.D. | 0.05 | 0.65 | 0.14 | 0.09 | 0.23 |