Model

Time

PM2.5 μg/m3

Reg-R2d

MSE-R2e

MPEf

RMSPEg

Slope

GAM

Month

0.75

0.75

0.046

2.29

1.02

1 Year

0.81

0.80

0.086

1.66

1.03

5 Year

0.84

0.83

0.113

1.51

1.03

GAM (FRMh)

Month

0.71

0.70

0.009

2.28

0.99

1 Year

0.74

0.74

0.036

1.60

1.02

5 Year

0.79

0.79

0.003

1.49

1.02