Table 1.

(A) Overlaps between the first 3 PCs and the first 3 low-frequency normal modes. The bold values are the largest values for each dataset. (B) The cumulative overlap (CO) between the first 3 PCs and a set of low-frequency normal modes. (C) The RMSIP between the PC and mode spaces.

(A)	X-ray-II			NMR			MD
	PC 1	PC 2	PC 3	PC 1	PC 2	PC 3	PC 1	PC 2	PC 3
Mode 1	0.46	0.27	0.24	0.25	0.88	0.02	0.74	0.03	0.12
Mode 2	0.52	0.31	0.20	0.91	0.28	0.05	0.23	0.26	0.28
Mode 3	0.17	0.51	0.31	0.02	0.04	0.30	0.16	0.14	0.65
(A) Overlap between a single PC and one mode

(B)	X-ray-II			NMR			MD
	PC 1	PC 2	PC 3	PC 1	PC 2	PC 3	PC 1	PC 2	PC 3
3 modes	0.71	0.66	0.43	0.94	0.92	0.31	0.79	0.30	0.72
6 modes	0.74	0.68	0.48	0.95	0.94	0.35	0.82	0.49	0.77
20 modes	0.84	0.73	0.62	0.96	0.95	0.46	0.89	0.67	0.83
(B) Overlap between one PC and a set of modes

(C)	X-ray-II		NMR		MD
	3 PCs	6 PCs	3 PCs	6 PCs	3 PCs	6 PCs
3 modes	0.61	0.53	0.78	0.61	0.64	0.59
6 modes	0.65	0.57	0.80	0.66	0.71	0.70
20 modes	0.74	0.68	0.83	0.74	0.80	0.81
(C) Overlap between PC and mode subspaces