Volume weighed mean concentrations of major ions in rainwater

pH

Cl⁻

${\text{NO}}_{\text{3}}^{-}$

${\text{SO}}_{\text{4}}^{\text{2}-}$

K⁺

Mg²⁺

Na⁺

Ca²⁺

This study (2019)

6.89

43.1

32.4

41.8

36.0

40.7

70.5

31.7

Wazhou, China (2018)

5.00

15.1

35.1

156.9

20.1

9.9

24.4

62.1

Hyderabad, India (2014)

6.00

21.5

28.7

38.9

2.28

4.29

25.6

158.6

Minas Gerais State, Brazil (2014)

6.22

17.3

16.2

14.2

7.12

24.1

25.0

39.6

Faatoia, Samoa (2007)

6.50

46.5

0

3.8

1.8

9.9

45.7

5.0