Index

[PM2.5]

Annual mean (μg·m−3)

Cold season mean (μg·m−3)

Warm season mean

PDO positive

10.5

18.2

7.1

PDO negative

14.6

16.4

15.1

SOI positive

11.2

17.4

5.3

SOI negative

14.8

17.1

14.5

NP < a, cs, ws

17.0

17.3

16.3

NP > a, cs, ws

11.5

17.1

5.1