Skip to main content

Table 1 Summary statistics for daily temperature, relative humidity, air pollutants and cerebrovascular deaths in five Chinese cities during 2004 to 2008

From: The effects of ambient temperature on cerebrovascular mortality: an epidemiologic study in four climatic zones in China

City

Variable

Min

25%

Median

75%

Max

Mean

SD

Beijing

Temperature (°C)

−10.1

3.5

14.8

23.6

32.1

13.6

10.9

Relative humidity (%)

8

34

52

68

97

52

20

PM10 (μg/m3)

10.0

78.3

128.0

184.0

600.0

144.6

91.3

NO2 (μg/m3)

14.0

47.1

60.9

76.8

214.4

64.2

25.7

Deaths

0

1

2

2

8

2

1

Tianjin

Temperature (°C)

−10.5

3.0

14.5

23.4

31.3

13.3

11.1

Relative humidity (%)

13

46

60

73

97

59

18

PM10 (μg/m3)

11.4

72.0

92.0

123.2

755.7

104.2

55.4

NO2 (μg/m3)

9.0

30.6

41.2

53.3

146.6

43.8

19.1

Deaths

0

1

2

4

10

3

2

Shanghai

Temperature (°C)

−3.2

10.0

18.7

25.2

33.8

17.6

9.0

Relative humidity (%)

31.0

63.0

71.0

79.0

95.0

70.4

11.8

PM10 (μg/m3)

12.0

52.0

76.0

114.0

600.0

89.2

53.6

NO2 (μg/m3)

12.8

43.2

54.4

72.0

171.2

58.4

22.8

Deaths

0

1

1

2

8

2

1

Wuhan

Temperature (°C)

−2.7

10.3

19.6

26.1

34.2

18.2

9.4

Relative humidity (%)

21

61

70

78

97

70

13

PM10 (μg/m3)

0.0

80.0

114.0

150.0

350.0

120.3

55.0

NO2 (μg/m3)

0.0

36.8

48.0

64.0

153.6

51.6

21.5

Deaths

0

2

3

4

12

3

2

Guangzhou

Temperature (°C)

5.4

18.5

24.4

27.9

34.2

22.9

6.2

Relative humidity (%)

20

63

72

80

95

70

13

PM10 (μg/m3)

8.0

48.0

73.0

105.1

329.1

81.6

44.4

NO2 (μg/m3)

17.1

42.4

58.3

82.5

232.0

66.3

30.4

Deaths

0

1

2

3

10

2

2

  1. SD: standard deviation.