SPACI score report for 3s66 in ASTRAL 2.05:

PDB Entry: 3s66
SPACI score: 0.66
AEROSPACI score: 0.66

Experiment type: XRAY
Resolution: 1.4
R-factor: 0.21
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 2
PCK3 PROCHECK H-bonds: 1
WCK1 WHAT_CHECK Packing: 0.255
WCK2 WHAT_CHECK Ramachandran: -1.034
WCK3 WHAT_CHECK Chi angles: -0.513
WCK4 WHAT_CHECK Backbone: 5.458

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).