SPACI score report for 4ar5 in ASTRAL 2.07:

PDB Entry: 4ar5
SPACI score: 1.06
AEROSPACI score: 1.06

Experiment type: XRAY
Resolution: 1
R-factor: 0.1099
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 1
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: 1.862
WCK2 WHAT_CHECK Ramachandran: 2.451
WCK3 WHAT_CHECK Chi angles: 1.934
WCK4 WHAT_CHECK Backbone: 4.705

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).