SPACI score report for 1knp in ASTRAL 2.08:

PDB Entry: 1knp
SPACI score: 0.22
AEROSPACI score: 0.22

Experiment type: XRAY
Resolution: 2.6
R-factor: 0.233
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 3
PCK3 PROCHECK H-bonds: 3
WCK1 WHAT_CHECK Packing: -1.744
WCK2 WHAT_CHECK Ramachandran: -3.858
WCK3 WHAT_CHECK Chi angles: -3.507
WCK4 WHAT_CHECK Backbone: -1.625

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).