SPACI score report for 2ckb in ASTRAL 1.67:

PDB Entry: 2ckb
SPACI score: 0.13
AEROSPACI score: 0.13

Experiment type: XRAY
Resolution: 3.2
R-factor: 0.221
PCK1 PROCHECK Ramachandran: 2
PCK2 PROCHECK Chi-1 angle: 3
PCK3 PROCHECK H-bonds: 3
WCK1 WHAT_CHECK Packing: -0.416
WCK2 WHAT_CHECK Ramachandran: -5.465
WCK3 WHAT_CHECK Chi angles: -4.665
WCK4 WHAT_CHECK Backbone: -8.332

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).