SPACI score report for 2c6f in ASTRAL 2.04:

PDB Entry: 2c6f
SPACI score: 0.21
AEROSPACI score: 0.21

Experiment type: XRAY
Resolution: 3.01
R-factor: 0.224
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 2
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: -2.472
WCK2 WHAT_CHECK Ramachandran: -5.088
WCK3 WHAT_CHECK Chi angles: -3.65
WCK4 WHAT_CHECK Backbone: -0.563

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).