$E_r^i$

PERI

Cr

Cu

Pb

Zn

Min

1.78

14.96

17.19

0.54

35.02

Max

3.43

45.31

108.57

1.73

132.96

Mean

2.14

22.67

64.59

1.21

91.02

Median

2.38

20.48

69.62

1.17

83.69