SPACI score report for 2go4 in ASTRAL 1.73:

PDB Entry: 2go4
SPACI score: 0.29
AEROSPACI score: 0.29

Experiment type: XRAY
Resolution: 2.7
R-factor: 0.21
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 1
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: -0.002
WCK2 WHAT_CHECK Ramachandran: -2.154
WCK3 WHAT_CHECK Chi angles: -0.717
WCK4 WHAT_CHECK Backbone: -5.616

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).