Statistic

EC

TDS

TH

Cl

Na+

Ca2+

Mg2+

K+

CWQI-OBS

No. of observations

8

8

8

8

8

8

8

8

8

8

8

Minimum

1797.0

1134.0

357.0

276.7

428.9

60.3

224.2

63.0

39.5

3.8

27.7

Maximum

2176.0

1356.0

453.0

458.7

517.1

126.3

317.9

89.5

67.5

10.6

35.9

Range

379.0

222.0

96.0

182.0

88.2

66.0

93.7

26.5

28.1

6.7

8.2

1st Quartile

1936.5

1225.0

381.0

353.5

448.2

75.2

275.4

74.0

45.0

6.5

28.2

Median

2035.5

1274.5

399.0

392.5

463.0

89.5

279.1

85.0

52.5

8.2

29.1

3rd Quartile

2108.8

1338.5

423.0

421.9

489.9

97.9

288.4

87.3

54.2

9.0

34.5

Mean

2010.4

1266.4

404.0

381.3

468.1

89.4

278.8

80.6

51.0

7.6

30.9

Variance (n)

16243.7

5951.2

1025.0

3242.6

834.2

392.1

607.6

76.4

73.5

5.6

10.8

Standard deviation (n)

127.5

77.1

32.0

56.9

28.9

19.8

24.7

8.7

8.6

2.4

3.3

Skewness (Pearson)

−0.5

−0.5

0.2

−0.5

0.3

0.4

−0.8

−0.9

0.3

−0.5

0.5

Kurtosis (Pearson)

−1.1

−1.1

−1.2

−0.9

−1.1

−0.7

0.8

−0.6

−0.5

−1.0

−1.6

Standard error of the mean

48.2

29.2

12.1

21.5

10.9

7.5

9.3

3.3

3.2

0.9

1.2