Table 1 Descriptive analysis of air pollutants, meteorological factors, and COVID-19 patient counts

From: Air pollution and COVID-19 mortality in Chinese cities: insights from a multi-city analysis during the pandemic’s first wave

Variables

Mean ± SD

Min

P25

P50

P75

Max

NO2 (μg/m3)

24.31 ± 14.00

3

14

22

32

119

SO2 (μg/m3)

9.32 ± 6.62

2

5

7

11

74

O3 (μg/m3)

66.15 ± 25.24

4

50

65

81

223

PM2.5 (μg/m3)

43.79 ± 37.69

3

23

36

53

906

Temperature (°C)

17.60 ± 9.00

−4.32

9.98

18.77

25.20

33.98

Relative humidity (%)

78.33 ± 11.00

40.67

70.79

78.92

86.79

100

Confirmed cases (cases/day)

545.67 ± 3368.41

1

7

32

134.75

48,984

Deaths (cases/day)

1.13 ± 8.47

0

0

0

0

216

Fatality rate (%)

0.002 ± 0.034

0

0

0

0

1

  1. SD standard deviation, P50 50th percentile, P25 25th percentile, P75 75th percentile, Min minimum, Max maximum.
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