SPACI score report for 1cko in ASTRAL 2.08:

PDB Entry: 1cko
SPACI score: 0.18
AEROSPACI score: 0.18

Experiment type: XRAY
Resolution: 3.1
R-factor: 0.233
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 2
PCK3 PROCHECK H-bonds: 3
WCK1 WHAT_CHECK Packing: -1.56
WCK2 WHAT_CHECK Ramachandran: -3.547
WCK3 WHAT_CHECK Chi angles: -4.023
WCK4 WHAT_CHECK Backbone: 1.993

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).