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Table 4 Summary statistics for each pollutant during different gestation in Liuzhou, China

From: The association between ambient air pollution and birth defects in five major ethnic groups in Liuzhou, China

 

Mean ± SD

Minimum

Maximum

25th PCTL

50th PCTL

75th PCTL

Before pregnancy

 1st month

  PM2.5 (μg/m3)

41.95 ± 16.03

15.35

89.78

29.45

40.31

53.35

  PM10 (μg/m3)

64.97 ± 31.93

26.49

218.56

44.36

58.36

77.33

  O3 (μg/m3)

80.91 ± 16.30

17.78

108.78

74.28

83.28

91.22

  SO2 (μg/m3)

20.74 ± 19.17

4.92

218.87

14.13

19.39

23.35

  NO2 (μg/m3)

27.01 ± 14.23

10.56

102.32

19.38

22.16

32.35

  CO (mg/m3)

1.06 ± 0.25

0.63

1.92

0.91

1.14

1.21

 2nd month

  PM2.5

41.45 ± 15.72

14.98

131.32

28.48

39.75

50.02

  PM10

61.66 ± 23.30

25.78

217.46

43.46

57.93

77.11

  O3

83.77 ± 11.69

16.54

109.21

77.25

86.37

92.22

  SO2

18.72 ± 11.19

3.45

217.89

14.13

19.32

22.32

  NO2

25.27 ± 9.86

9.43

101.73

19.28

22.27

30.03

  CO

1.02 ± 0.20

0.58

1.87

0.96

1.11

1.21

 3rd month

  PM2.5

43.18 ± 19.46

4.67

118.45

27.65

40.18

57.34

  PM10~

61.50 ± 21.40

31.32

218.46

42.87

58.42

77.36

  O3

82.03 ± 14.00

17.46

108.32

75.43

83.43

92.03

  SO2

18.78 ± 8.44

4.32

218.68

13.94

18.27

22.35

  NO2

24.71 ± 8.00

10.46

102.98

18.75

22.17

30.43

  CO

1.03 ± 0.21

0.67

1.96

0.89

1.02

1.23

Pregnancy

 1st month

  PM2.5

41.78 ± 16.93

15.67

88.67

29

39.36

53.37

  PM10

65.90 ± 37.05

25.67

217.95

43

50.43

56.45

  O3

76.30 ± 21.03

17.79

107.74

68

81.37

91.76

  SO2

22.23 ± 23.34

4.46

217.58

15

19.03

24.36

  NO2

27.97 ± 16.69

9.08

101.67

18

22.17

32.42

  CO

1.11 ± 0.28

0.64

1.87

0.9

1.10

1.31

 2nd month

  PM2.5

39.78 ± 17.25

15.56

89.63

27

35.44

52.38

  PM10

63.18 ± 38.45

25.66

217.63

42

49.38

72.17

  O3

72.06 ± 22.83

17.12

108.58

51

78.47

90.04

  SO2

23.20 ± 23.48

4.12

218.57

15

20.11

25.17

  NO2

27.98 ± 17.30

9.09

102.37

18

22.03

32.47

  CO

1.14 ± 0.30

0.68

1.92

0.9

1.12

1.33

 3rd month

  PM2.5

38.25 ± 16.94

6.06

89.89

27

35.48

46.34

  PM10

62.88 ± 38.27

25.45

218.47

42

50.43

72.46

  O3

68.30 ± 23.65

17.59

107.74

46

74.47

89.52

  SO2

24.86 ± 23.00

4.67

217.83

16

21.22

28.49

  NO2

27.67 ± 17.37

7.09

101.87

18

22.36

33.27

  CO

1.18 ± 0.29

0.69

1.96

1.0

1.22

1.37

  1. Abbreviations: SD standard deviation, 1st month The first month exposure, 2nd month The second month exposure, 3rd month The third month exposure, PCTL percentile
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