Silicon Monoxide (Noncrystalline) from Palik HOC Vol. 1, p. 768
EV
NK
6	1.829	.7084
5.75	1.871	.6890
5.5	1.914	.6663
5.25	1.957	.6383
5	2.001	.6052
4.8	2.034	.5723
4.6	2.066	.5364
4.4	2.094	.4948
4.2	2.119	.4499
4	2.141	.4006
3.8	2.157	.3453
3.6	2.162	.2872
3.4	2.160	.2287
3.2	2.144	.1706
3	2.116	.1211
2.8	2.085	.08374
2.6	2.053	.05544
2.4	2.021	.03533
2.2	1.994	.02153
2	1.969	.01175
1.8	1.948	.00523
1.6	1.929	.00151
1.4	1.913	0
1.24	1.87	0
.6199	1.84	0
.4133	1.82	0