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Table 2 Concentrations of PM, metals from PM2.5, gaseous pollutants, and climatic conditions (1999 spring and winter)

From: Air pollution and lung function among susceptible adult subjects: a panel study

Variable

Unit

Spring

Winter

Overall

  

Obs

Mean

SD

GMean

IQR

Obs

Mean

SD

GMean

IQR

Mean

SD

GMean

Min

Max

IQR

PM 2.5 *

μg/m3

32

18.2

5.0

17.4

8.1

30

36.7

24.1

27.8

40.9

27.2

19.4

21.8

4.5

100

22.7

PM 10–2.5 *

μg/m3

32

18.7

7.4

17.4

9.0

30

12.3

5.4

11.0

8.3

15.6

7.2

14.0

3.4

39.6

7.1

PM 10 *

μg/m3

32

36.9

10.8

35.4

13.1

30

49.0

28.1

40.2

45.3

42.8

21.8

37.6

7.9

123

26.9

Cd

ng/m3

30

0.29

0.09

0.27

0.14

30

0.63

0.50

0.47

0.47

0.46

0.40

0.36

0.09

2.0

0.31

Cr

ng/m3

30

0.90

0.47

0.80

0.61

30

2.8

2.0

2.2

2.7

1.9

1.7

1.3

0.2

9.8

1.6

Fe

ng/m3

30

339

180

303

212

30

227

132

190

208

283

167

240

54.1

893

202

Ni

ng/m3

30

5.1

4.7

3.6

4.2

30

4.6

8.0

2.7

2.5

4.8

6.5

3.1

1.0

42.3

2.8

Pb

ng/m3

30

24.4

9.6

22.2

15.6

30

36.8

23.8

27.7

33.5

30.6

19.0

24.8

2.2

99.8

19.9

Pt

pg/m3

30

5.3

6.8

3.3

3.9

30

4.6

10.3

1.4

2.7

5.0

8.6

2.2

0.05

54.9

3.3

V

ng/m3

30

2.4

1.6

2.0

2.0

30

1.1

0.52

0.95

0.97

1.8

1.4

1.4

0.47

6.3

1.3

Zn

ng/m3

30

28.7

13.0

26.4

15.1

30

63.0

38.2

51.4

58.0

45.8

33.1

36.8

13.9

159

32.9

NO 2 †

μg/m3

32

76.1

13.6

75.0

17.5

35

65.5

13.3

64.0

14.6

70.6

14.4

69.0

27.6

102

20.9

CO †

mg/m3

32

2.1

0.3

2.1

0.50

34

12.3

4.9

11.5

6.1

7.4

6.2

5.0

1.6

28.9

10.5

O 3 ‡

μg/m3

32

70.9

12.5

69.8

16.9

34

16.0

8.1

14.3

10.0

42.6

29.5

30.8

6.6

95.3

58.7

SO 2 ‡

μg/m3

32

4.7

1.8

4.3

2.5

35

7.9

2.2

7.6

3.9

6.4

2.6

5.8

1.2

11.6

4.0

T

°C

32

23.7

1.9

23.7

3.3

35

9.5

2.1

9.3

2.7

16.3

7.4

14.5

5.3

27.0

14.3

RelHum

%

32

46.5

10.2

45.4

14.0

35

66.7

13.5

65.1

14.0

57.0

15.7

54.8

29.0

87.0

24.0

BarP

mm Hg

32

762

2.6

762

3.4

35

762

7.3

762

12.1

762

5.5

762

748

773

6.6

PM 2.5 Indoor §

μg/m3

28

24.7

7.8

23.7

9.0

31

27.0

12.0

24.4

18.8

25.9

10.2

24.1

10.2

56.5

14.4

  1. *Averages of 24 h concentrations measured at 2 locations.
  2. †Averages of 24 h concentrations recorded at 5 fixed sites.
  3. ‡Averages of 24 h concentrations recorded at 2 fixed sites.
  4. §Averages of 24 h concentrations measured at 3 study participants' homes per season.
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Environmental Health

ISSN: 1476-069X