SPACI score report for 2ycn in ASTRAL 2.06:

PDB Entry: 2ycn
SPACI score: 0.45
AEROSPACI score: 0.45

Experiment type: XRAY
Resolution: 2.04
R-factor: 0.16405
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 2
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: -0.922
WCK2 WHAT_CHECK Ramachandran: -0.816
WCK3 WHAT_CHECK Chi angles: -1.089
WCK4 WHAT_CHECK Backbone: 2.994

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).