SPACI score report for 1c8t in ASTRAL 1.55:

PDB Entry: 1c8t
SPACI score: 0.25
AEROSPACI score: 0.25

Experiment type: XRAY
Resolution: 2.6
R-factor: 0.22
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 2
PCK3 PROCHECK H-bonds: 3
WCK1 WHAT_CHECK Packing: -3.059
WCK2 WHAT_CHECK Ramachandran: -3.371
WCK3 WHAT_CHECK Chi angles: -2.734
WCK4 WHAT_CHECK Backbone: -1.265

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).