SPACI score report for 6gsp in ASTRAL 2.08:

PDB Entry: 6gsp
SPACI score: 0.4
AEROSPACI score: 0.4

Experiment type: XRAY
Resolution: 2.2
R-factor: 0.195
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 1
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: -0.865
WCK2 WHAT_CHECK Ramachandran: 0.256
WCK3 WHAT_CHECK Chi angles: -1.423
WCK4 WHAT_CHECK Backbone: -0.738

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).