C

As

Pb

Cd

Cr

Cu

Zn

Hg

Lower

+0.862

−0.670

+0.508

−0.862

+0.492

+0.998^*

+0.862

Lower middle

+0.793

+0.366

+0.149

−0.953

+0.149

+0.827

−0.149

Middle

+0.101

+0.164

+0.619

+0.084

+1^*

+0.187

−0.5

High

−0.904

−0.908

−0.188

+0.757

−1^*

+0.674

−0.866