SPACI score report for 4bc1 in ASTRAL 2.07:

PDB Entry: 4bc1
SPACI score: 0.26
AEROSPACI score: 0.26

Experiment type: XRAY
Resolution: 2.95
R-factor: 0.1879
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 2
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: -2.129
WCK2 WHAT_CHECK Ramachandran: -2.798
WCK3 WHAT_CHECK Chi angles: -3.327
WCK4 WHAT_CHECK Backbone: 1.518

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).