SPACI score report for 4gg1 in ASTRAL 2.05:

PDB Entry: 4gg1
SPACI score: 0.95
AEROSPACI score: 0.95

Experiment type: XRAY
Resolution: 1.07
R-factor: 0.14
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 1
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: 0.232
WCK2 WHAT_CHECK Ramachandran: -0.566
WCK3 WHAT_CHECK Chi angles: 1.031
WCK4 WHAT_CHECK Backbone: 3.444

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).