Element

I_{geo [COMBINED]}

I_{geo [ANCHAR]}

I_{geo [DAL]}

Interpretation

Al

−3.59

−3.58

−3.59

Unpolluted (≤ 0)

As

2.93

3.14

2.76

Moderately to highly polluted (≤3 but an char lake highly polluted(≤4)

Cd

0.61

0.44

0.74

Unpolluted to moderately polluted (≤1)

Co

−0.34

−0.25

−0.39

Unpolluted (≤0)

Cr

−0.17

−0.06

−0.23

Unpolluted (≤0)

Cu

1.91

1.88

1.94

Moderately polluted (≤2)

Fe

−1.51

−1.45

−1.59

Unpolluted (≤0)

Mn

−1.06

−0.89

−1.16

Unpolluted (≤0)

Ni

−0.58

−0.5

−0.64

Unpolluted (≤0)

Pb

−0.86

−1.03

−0.75

Unpolluted (≤0)

Sn

0.62

1.1

0.18

Unpolluted to moderately polluted (≤1)

But anchar lake moderately polluted (≤2)

Zn

3.19

3.31

3.11

Highly polluted (≤4)