SPACI score report for 3zbv in ASTRAL 2.05:

PDB Entry: 3zbv
SPACI score: 0.58
AEROSPACI score: 0.58

Experiment type: XRAY
Resolution: 1.64
R-factor: 0.19774
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 1
PCK3 PROCHECK H-bonds: 1
WCK1 WHAT_CHECK Packing: -1.332
WCK2 WHAT_CHECK Ramachandran: -1.132
WCK3 WHAT_CHECK Chi angles: 1.796
WCK4 WHAT_CHECK Backbone: 1.506

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).