N

Average (SD)

P25

P50

P75

Min - max

Measurements during the study period*

PM2.5 (µg/m3)

207,519

17.15 (15.24)

7.88

13.58

23.08

0.01 - 172.5

Temperature (˚C)

260,832

18.39 (2.71)

16.51

18.07

20.14

10.44 - 27.35

Relative humidity (%)

260,832

70.13 (8.93)

63.85

71.27

77.26

34.33 - 89.9

Wind velocity (m/s)

260,832

2.59 (1.80)

1.10

2.19

3.93

0 - 10.26

Barometric pressure (mmHg)

260,832

757.23 (1.53)

756.2

757.2

758.2

751.8 - 762.5

24-hour average**

PM2.5 (µg/m3)

182

13.63 (5.86)

10.7

12.5

14.8

4.3 - 50.1