SPACI score report for 3des in ASTRAL 2.07:

PDB Entry: 3des
SPACI score: 0.37
AEROSPACI score: 0.37

Experiment type: XRAY
Resolution: 2.3
R-factor: 0.213
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 1
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: -0.326
WCK2 WHAT_CHECK Ramachandran: -0.856
WCK3 WHAT_CHECK Chi angles: -0.196
WCK4 WHAT_CHECK Backbone: -0.061

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).