SPACI score report for 1rf2 in ASTRAL 2.08:

PDB Entry: 1rf2
SPACI score: 0.76
AEROSPACI score: 0.76

Experiment type: XRAY
Resolution: 1.35
R-factor: 0.134
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 1
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: 0.62
WCK2 WHAT_CHECK Ramachandran: 0.779
WCK3 WHAT_CHECK Chi angles: -0.097
WCK4 WHAT_CHECK Backbone: -0.241

Note: Here are links to pages about PROCHECK and WHAT_CHECK.

Here is the full WHAT_CHECK report on this protein (linked from the WHAT_CHECK site).