Element

Samples

Min (%)

Max (%)

Mean (%)

Median (%)

Variance (%)²

S.D. (%)

Skewness

Kurtosis

Fe

1550

1.08

64.47

33.65

34.32

226.2

15.4

−0.01

−1.16

P

1550

0

3.04

0.46

0.36

0.17

0.41

2.1

6.42

S

1550

0

5.57

0.44

0.25

0.27

0.52

3.12

15.1