Table 2. Average values of R _free (%) (Brünger, 1992 ▶) and R _free/R _work (Tickle et al., 1998 ▶) for eight test protein structures with different ADP restraints and data truncated to different resolutions.

	1.4 Å	1.7 Å	2.0 Å
Unrestrained isotropic	20.9/1.25	22.2/1.38	24.3/1.59
RIGU	18.5/1.29	20.8/1.41	22.9/1.53
DELU + SIMU	18.9/1.34	21.3/1.48	23.1/1.58