SPACI score report for 1ywo in ASTRAL 2.07:

PDB Entry: 1ywo
SPACI score: 0.54
AEROSPACI score: 0.54

Experiment type: XRAY
Resolution: 1.81
R-factor: 0.173
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 1
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: 1.128
WCK2 WHAT_CHECK Ramachandran: 1.052
WCK3 WHAT_CHECK Chi angles: 1.149
WCK4 WHAT_CHECK Backbone: 1.476

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).