Table 2 Mean level of air pollution on Asian dust- (visibility ≤10 km) and non-Asian dust days

 CO (ppm)

0.8 ± 0.4

0.6 ± 0.3

< 0.0001

 O₃ (ppb)

31.6 ± 19.5

32.6 ± 16.9

0.102

 NO₂ (ppb)

38.5 ± 12.9

31.3 ± 11.7

< 0.0001

 SO₂ (ppb)

6.1 ± 2.7

5.1 ± 1.6

< 0.0001

 PM₁₀ (μg/m³)

70.6 ± 41.8

42.3 ± 20.0

< 0.0001

 PM_2.5 (μg/m³)

39.1 ± 17.1

22.1 ± 8.9

< 0.0001

 Mean temperature (°C)

13.76 ± 9.22

11.95 ± 11.15

< 0.0001

 Relative humility (%)

70.9 ± 12.08

55.26 ± 13.36

< 0.0001