SPACI score report for 3f6e in ASTRAL 2.05:

PDB Entry: 3f6e
SPACI score: 0.7
AEROSPACI score: 0.7

Experiment type: XRAY
Resolution: 1.34
R-factor: 0.191
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 1
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: 0.233
WCK2 WHAT_CHECK Ramachandran: -0.544
WCK3 WHAT_CHECK Chi angles: 0.693
WCK4 WHAT_CHECK Backbone: 0.244

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).