Table 4. NSS values for natural scenes.

Nr. of subjects Nr. of images	1	2	4	7	13	25	47	Subject-specific
Image-specific	0.741	0.941	1.159	1.319	1.465	1.571	1.638
63	0.773	0.835	0.871	0.887	0.897	0.903	0.905	0.976
32	0.730	0.804	0.850	0.870	0.882	0.890	0.893	0.929
16	0.664	0.752	0.810	0.837	0.855	0.865	0.870	0.854
8	0.574	0.672	0.744	0.781	0.807	0.822	0.829	0.748
4	0.472	0.570	0.653	0.699	0.732	0.753	0.764	0.623
2	0.368	0.461	0.536	0.593	0.634	0.657	0.666	0.492
1	0.277	0.346	0.439	0.490	0.520	0.559	0.577	0.376