SPACI score report for 2g3b in ASTRAL 2.05:

PDB Entry: 2g3b
SPACI score: 0.44
AEROSPACI score: 0.44

Experiment type: XRAY
Resolution: 2
R-factor: 0.188
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 2
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: -0.023
WCK2 WHAT_CHECK Ramachandran: -1.969
WCK3 WHAT_CHECK Chi angles: -1.423
WCK4 WHAT_CHECK Backbone: 5.398

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).