Table 3 Seasonal distribution of air pollution
From: The association between air pollution and preterm birth and low birth weight in Guangdong, China
Seasons | Month | PM2.5 (μg/m3) | PM10 (μg/m3) | SO2 (μg/m3) | NO2 (μg/m3) | CO (mg/m3) | O3 (μg/m3) |
|---|---|---|---|---|---|---|---|
Spring | 3 | 39.07 | 57.47 | 15.51 | 31.28 | 1.14 | 43.17 |
4 | 35.49 | 54.48 | 14.77 | 26.80 | 1.05 | 59.98 | |
5 | 24.13 | 39.66 | 12.15 | 23.18 | 0.96 | 48.45 | |
Summer | 6 | 20.63 | 36.97 | 11.32 | 18.50 | 0.84 | 50.32 |
7 | 23.15 | 39.42 | 11.58 | 17.13 | 0.85 | 56.71 | |
8 | 23.55 | 39.78 | 13.21 | 18.59 | 0.84 | 54.88 | |
Autumn | 9 | 29.63 | 46.25 | 12.90 | 19.92 | 0.91 | 65.72 |
10 | 47.82 | 72.16 | 17.18 | 26.44 | 1.01 | 84.18 | |
11 | 40.27 | 60.60 | 15.87 | 28.73 | 1.06 | 54.30 | |
Winter | 12 | 41.15 | 62.21 | 17.85 | 33.73 | 1.08 | 44.50 |
1 | 66.24 | 93.57 | 22.40 | 43.53 | 1.34 | 61.65 | |
2 | 46.38 | 62.55 | 13.80 | 28.46 | 1.18 | 52.80 |