SPACI score report for 2co6 in ASTRAL 2.06:

PDB Entry: 2co6
SPACI score: 0.44
AEROSPACI score: 0.44

Experiment type: XRAY
Resolution: 2
R-factor: 0.183
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: -1.404
WCK3 WHAT_CHECK Chi angles: -2.259
WCK4 WHAT_CHECK Backbone: 2.45

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).