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Table 4 Estimated regression coefficients in five significant models predicting PM2.5 concentration (Table 3) from log-transformed independent variables of total green cover (%) and total edge length (TE, km)

From: Do green spaces affect the spatiotemporal changes of PM2.5 in Nanjing?

Season (scale)

Log(green cover)*log(edge length)

Log(edge length)

Intercept

Slope

R 2

Intercept

Slope

R 2

Spring (1.0 km)

56.93

3.57

0.82

50.24

−10.75

0.83

Spring (2.0 km)

56.05

4.50

0.79

48.71

−12.28

0.82

Summer (4.0 km)

50.79

−0.78

0.03

49.06

−0.41

0.01

Winter (4.0 km)

100.97

−0.09

0.01

104.37

3.01

0.02

Autumn (6.0 km)

69.59

0.46

0.01

65.49

−4.64

0.12