SPACI score report for 1y6x in ASTRAL 2.07:

PDB Entry: 1y6x
SPACI score: 0.79
AEROSPACI score: 0.79

Experiment type: XRAY
Resolution: 1.25
R-factor: 0.183
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 1
PCK3 PROCHECK H-bonds: 1
WCK1 WHAT_CHECK Packing: 0.14
WCK2 WHAT_CHECK Ramachandran: 2.076
WCK3 WHAT_CHECK Chi angles: 0.352
WCK4 WHAT_CHECK Backbone: 0.767

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).