SPACI score report for 1byc in ASTRAL 1.57:

WARNING! The SPACI score for this entry is not valid. This is not an X-ray structure, so the resolution and R-factor listed may be arbitrary and not valid.

PDB Entry: 1byc
SPACI score: 0.44 (not valid)
AEROSPACI score: 0.44 (not valid)

Experiment type: -
Resolution: 2.2
R-factor: 0.149
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 2
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: 4.149
WCK2 WHAT_CHECK Ramachandran: -0.653
WCK3 WHAT_CHECK Chi angles: -0.937
WCK4 WHAT_CHECK Backbone: 0.428

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).