SPACI score report for 1ikn in ASTRAL 2.06:

PDB Entry: 1ikn
SPACI score: 0.3
AEROSPACI score: 0.3

Experiment type: XRAY
Resolution: 2.3
R-factor: 0.223
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 2
PCK3 PROCHECK H-bonds: 3
WCK1 WHAT_CHECK Packing: -3.072
WCK2 WHAT_CHECK Ramachandran: -4.197
WCK3 WHAT_CHECK Chi angles: -3.775
WCK4 WHAT_CHECK Backbone: -1.28

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).