SPACI score report for 1gwg in ASTRAL 1.69:

PDB Entry: 1gwg
SPACI score: 0.48
AEROSPACI score: 0.48

Experiment type: XRAY
Resolution: 2.01
R-factor: 0.169
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 2
PCK3 PROCHECK H-bonds: 1
WCK1 WHAT_CHECK Packing: 0.748
WCK2 WHAT_CHECK Ramachandran: 3.204
WCK3 WHAT_CHECK Chi angles: -1.072
WCK4 WHAT_CHECK Backbone: -0.552

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).