SPACI score report for 1x3f in ASTRAL 2.07:

PDB Entry: 1x3f
SPACI score: 0.25
AEROSPACI score: 0.25

Experiment type: XRAY
Resolution: 2.7
R-factor: 0.208
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 3
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: -2.504
WCK2 WHAT_CHECK Ramachandran: -3.948
WCK3 WHAT_CHECK Chi angles: -4.708
WCK4 WHAT_CHECK Backbone: 1.708

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).