Parameter

Max. value

Min. value

Mean

Range

Na

253.2

13.4

85.82

13.04 - 253.2

K

20.5

8.4

12.6

8.4 - 20.5

Ca

374.4

14.8

135.92

14.8 - 374

Mg

94.6

12.5

41.61

12.5 - 94.6