SPACI score report for 1aqk in ASTRAL 1.73:

PDB Entry: 1aqk
SPACI score: 0.45
AEROSPACI score: 0.45

Experiment type: XRAY
Resolution: 1.84
R-factor: 0.185
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 3
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: 0.536
WCK2 WHAT_CHECK Ramachandran: -1.627
WCK3 WHAT_CHECK Chi angles: -3.746
WCK4 WHAT_CHECK Backbone: -6.339

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).