SPACI score report for 1c8c in ASTRAL 1.57:

PDB Entry: 1c8c
SPACI score: 0.56
AEROSPACI score: 0.56

Experiment type: XRAY
Resolution: 1.45
R-factor: 0.229
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 3
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: -4.218
WCK2 WHAT_CHECK Ramachandran: -0.219
WCK3 WHAT_CHECK Chi angles: -2.37
WCK4 WHAT_CHECK Backbone: 0.633

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).