SPACI score report for 1g52 in ASTRAL 1.55:

PDB Entry: 1g52
SPACI score: 0.54
AEROSPACI score: 0.54

Experiment type: XRAY
Resolution: 1.8
R-factor: 0.165
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 1
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: 4.293
WCK2 WHAT_CHECK Ramachandran: -0.76
WCK3 WHAT_CHECK Chi angles: 0.565
WCK4 WHAT_CHECK Backbone: -0.184

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).