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Table 2 Distribution of PM2.5, its components and meteorological factors in lag 1 year

From: Long-term effects of PM2.5 and its components on incident hypertension among the middle-aged and elderly: a national cohort study

Pollutant

Mean

SD

Min

P25

Median

P75

Max

BC (碌驳/尘鲁)

2.24

0.76

0.86

1.68

2.05

2.64

4.80

SO42鈭� (碌驳/尘鲁)

8.67

3.40

2.63

6.04

7.99

10.74

18.69

OM (碌驳/尘鲁)

11.17

3.99

4.47

8.22

10.36

13.53

24.36

NH4+ (碌驳/尘鲁)

6.99

3.05

2.37

4.39

6.40

9.08

15.21

NO3鈭� (碌驳/尘鲁)

10.07

4.89

2.76

5.95

9.27

13.20

22.91

PM2.5 (碌驳/尘鲁)

45.85

18.90

17.62

30.80

41.49

57.51

104.73

RHU (g/kg) 脳 10鈭掆赌�3

9.17

2.63

3.66

7.40

9.55

10.81

14.96

TMP (K)

285.02

5.47

267.30

283.42

285.77

288.24

294.06

  1. Abbreviations: BC, black carbon; SO42鈭�, sulphate; OM, organic matter; NH4+, ammonium; NO3鈭�, nitrate; PM2.5, fine particulate matter; RHU, relative humidity; TMP, temperature; SD, standard deviation; Min, minimum; P25, 25th percentile; P75, 75th percentile; Max, maximum
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ISSN: 1471-2458

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