SPACI score report for 3f8c in ASTRAL 2.03:

PDB Entry: 3f8c
SPACI score: 0.38
AEROSPACI score: 0.38

Experiment type: XRAY
Resolution: 2.2
R-factor: 0.212
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 2
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: 1.982
WCK2 WHAT_CHECK Ramachandran: -0.269
WCK3 WHAT_CHECK Chi angles: -1.938
WCK4 WHAT_CHECK Backbone: 5.734

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).