SPACI score report for 4aoh in ASTRAL 2.06:

PDB Entry: 4aoh
SPACI score: 0.94
AEROSPACI score: 0.94

Experiment type: XRAY
Resolution: 1.04
R-factor: 0.1698
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 1
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: -2.167
WCK2 WHAT_CHECK Ramachandran: -1.559
WCK3 WHAT_CHECK Chi angles: 2.165
WCK4 WHAT_CHECK Backbone: 1.19

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).