SPACI score report for 2bnw in ASTRAL 2.07:

PDB Entry: 2bnw
SPACI score: 0.29
AEROSPACI score: 0.29

Experiment type: XRAY
Resolution: 2.45
R-factor: 0.227
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 2
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: -1.177
WCK2 WHAT_CHECK Ramachandran: -2.975
WCK3 WHAT_CHECK Chi angles: -2.895
WCK4 WHAT_CHECK Backbone: 0.7

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).