SPACI score report for 1sof in ASTRAL 2.08:

PDB Entry: 1sof
SPACI score: 0.34
AEROSPACI score: 0.34

Experiment type: XRAY
Resolution: 2.6
R-factor: 0.196
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 2
PCK3 PROCHECK H-bonds: 1
WCK1 WHAT_CHECK Packing: 0.556
WCK2 WHAT_CHECK Ramachandran: -1.733
WCK3 WHAT_CHECK Chi angles: -1.826
WCK4 WHAT_CHECK Backbone: 6.013

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).