SPACI score report for 2g58 in ASTRAL 2.06:

PDB Entry: 2g58
SPACI score: 1.06
AEROSPACI score: 1.06

Experiment type: XRAY
Resolution: 0.98
R-factor: 0.133
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 1
PCK3 PROCHECK H-bonds: 1
WCK1 WHAT_CHECK Packing: -0.055
WCK2 WHAT_CHECK Ramachandran: -1.041
WCK3 WHAT_CHECK Chi angles: 0.193
WCK4 WHAT_CHECK Backbone: 3.434

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).