SPACI score report for 1k9u in ASTRAL 1.75:

PDB Entry: 1k9u
SPACI score: 0.64
AEROSPACI score: 0.64

Experiment type: XRAY
Resolution: 1.75
R-factor: 0.192
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 1
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: 0.183
WCK2 WHAT_CHECK Ramachandran: 1.607
WCK3 WHAT_CHECK Chi angles: -0.014
WCK4 WHAT_CHECK Backbone: 1.966

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).