SPACI score report for 1x8g in ASTRAL 2.08:

PDB Entry: 1x8g
SPACI score: 0.57
AEROSPACI score: 0.57

Experiment type: XRAY
Resolution: 1.7
R-factor: 0.184
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 1
PCK3 PROCHECK H-bonds: 1
WCK1 WHAT_CHECK Packing: -0.497
WCK2 WHAT_CHECK Ramachandran: -0.916
WCK3 WHAT_CHECK Chi angles: -0.477
WCK4 WHAT_CHECK Backbone: 1.73

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).