SPACI score report for 1y4p in ASTRAL 2.04:

PDB Entry: 1y4p
SPACI score: 0.45
AEROSPACI score: 0.45

Experiment type: XRAY
Resolution: 1.98
R-factor: 0.196
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 2
PCK3 PROCHECK H-bonds: 1
WCK1 WHAT_CHECK Packing: 0.165
WCK2 WHAT_CHECK Ramachandran: -0.782
WCK3 WHAT_CHECK Chi angles: -2.189
WCK4 WHAT_CHECK Backbone: 1.158

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).