SPACI score report for 1g39 in ASTRAL 2.08:

PDB Entry: 1g39
SPACI score: 0.73
AEROSPACI score: 0.73

Experiment type: XRAY
Resolution: 1.22
R-factor: 0.256
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 1
PCK3 PROCHECK H-bonds: 1
WCK1 WHAT_CHECK Packing: -0.522
WCK2 WHAT_CHECK Ramachandran: 3.537
WCK3 WHAT_CHECK Chi angles: -1.347
WCK4 WHAT_CHECK Backbone: 1.867

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).