SPACI score report for 2fkb in ASTRAL 1.73:

PDB Entry: 2fkb
SPACI score: 0.44
AEROSPACI score: 0.44

Experiment type: XRAY
Resolution: 2
R-factor: 0.201
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 1
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: 0.625
WCK2 WHAT_CHECK Ramachandran: 0.113
WCK3 WHAT_CHECK Chi angles: -0.299
WCK4 WHAT_CHECK Backbone: -3.455

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).