Elements

Min. Conc.

1st Quartile (Q1)

Median

Max. Conc.

3rd Quartile (Q3)

No of

samples

where

detected

Geometric

Mean

(X)

Standard

Deviation

(S)

Threshold

Log1 (X + 2S)

Threshold

Log−1 (Q3 + 1.5 (Q3-Q1)

Ag

0.477

0.903

1.176

2.190

1.380

47

1.174

0.366

80.568

1.763

As

−1

1.020

−0.126

2.331

1.775

48

0.008

0.513

10.820

3.5

Au

−0.398

0.7

0.114

1.097

2.7

43

0.180

0.423

10.645

5.6

Cd

−2

0.01

−1.699

−1.222

0.033

26

−1.649

0.261

0.075

0.06

Cu

0.121

7.06

1.067

1.897

18.215

49

1.029

0.341

51.486

33.22

Fe

−0.921

1.18

0.328

1.091

2.81

49

0.265

0.356

9.467

4.43

Hg

0.778

10.5

1.279

2.037

28.75

48

1.272

0.265

63.264

50

Mn

1.204

221.5

2.486

3.064

481.5

49

2.452

0.374

1589.24

804

Pb

0.299

8.165

1.002

1.430

15.99

49

1.003

0.244

30.978

26.94

Sb

−1.699

0.03

−1.301

−0.420

0.065

41

−1.301

0.337

0.236

0.11

Zn

0.342

14.95

1.567

2.555

76.4

49

1.520

0.506

340.158

167.7