| 4 HOURS | 6 HOURS | 8 HOURS | 10 HOURS |
Pb | −2.03152 | −2.22185 | −3.00000 | −3.39794 |
Cr | −2.04096 | −2.39794 | −3.00000 | −3.22185 |
Ni | −0.96658 | −1.13077 | −1.24413 | −1.58503 |