SPACI score report for 3fen in ASTRAL 2.03:

PDB Entry: 3fen
SPACI score: 0.64
AEROSPACI score: 0.64

Experiment type: XRAY
Resolution: 1.56
R-factor: 0.156
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 1
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: 0.211
WCK2 WHAT_CHECK Ramachandran: 2.347
WCK3 WHAT_CHECK Chi angles: 0.05
WCK4 WHAT_CHECK Backbone: 2.049

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).