Table 1 The descriptive statistics of PM2.5 (μg/m3).
From: Spatial Association Effect of Haze Pollution in Cheng-Yu Urban Agglomeration
city | Chongqing | Chengdu | Zigong | Luzhou | Deyang | Mianyang | Suining | Neijiang |
|---|---|---|---|---|---|---|---|---|
Mean | 38.15 | 49.44 | 52.60 | 37.75 | 41.62 | 45.34 | 34.85 | 37.25 |
S.D. | 21.25 | 32.16 | 36.04 | 26.51 | 31.27 | 32.84 | 21.22 | 27.60 |
skewness | 2.02 | 1.42 | 1.43 | 1.58 | 1.56 | 1.68 | 1.69 | 1.34 |
kurtosis | 5.62 | 2.69 | 2.33 | 2.69 | 3.11 | 4.01 | 5.74 | 1.89 |
PP test | −6.37*** | −6.61*** | −5.23*** | −5.95*** | −6.28*** | −5.77*** | −6.62*** | −5.22*** |
city | Leshan | Nanchong | Meishan | Yibin | Guang’an | Dazhou | Ya’an | Ziyang |
Mean | 45.92 | 46.83 | 38.48 | 50.68 | 40.32 | 45.84 | 39.56 | 34.73 |
S.D. | 28.48 | 24.29 | 25.67 | 30.55 | 26.08 | 32.70 | 27.59 | 24.02 |
skewness | 1.34 | 1.40 | 1.56 | 1.24 | 1.71 | 1.87 | 1.30 | 1.68 |
kurtosis | 2.34 | 3.03 | 3.13 | 1.43 | 4.21 | 4.35 | 1.98 | 2.66 |
PP test | −6.99*** | −6.59*** | −6.38*** | −6.83*** | −6.39*** | −6.31*** | −6.53*** | −4.82*** |
