SPACI score report for 1yfq in ASTRAL 2.05:

PDB Entry: 1yfq
SPACI score: 0.9
AEROSPACI score: 0.9

Experiment type: XRAY
Resolution: 1.1
R-factor: 0.152
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 1
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: 0.008
WCK2 WHAT_CHECK Ramachandran: -0.47
WCK3 WHAT_CHECK Chi angles: -0.018
WCK4 WHAT_CHECK Backbone: -0.222

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).