metal albedo table ior

Name	Red_ACEScg	Green_ACEScg	Blue_ACEScg	IOR
Silver	0.758765	0.755048	0.752412	1.082
Gold	0.659051	0.458738	0.123940	1.35002
Copper	0.614256	0.298303	0.213841	1.21901
Aluminium	0.618401	0.672947	0.682368	1.002
Chromium	0.140349	0.140349	0.140349	1.03
Lead	0.264084	0.265443	0.277903	1.016
Platinum	0.654022	0.616726	0.377176	1.024
Titanium	0.699456	0.637539	0.297492	1.086
Tungsten	0.505142	0.283667	0.179808	1.007
Iron	0.456733	0.434045	0.262660	1.006
Vanadium	0.644844	0.523107	0.196363	1.034
Zinc	0.423637	0.418052	0.409058	1.011
Nickel	0.457723	0.399388	0.169834	1.016
Mercury	0.167639	0.167639	0.167639	1.013
Cobalt	0.071277	0.045923	0.015718	1.031