SPACI score report for 1n6q in ASTRAL 2.04:

PDB Entry: 1n6q
SPACI score: 0.15
AEROSPACI score: 0.15

Experiment type: XRAY
Resolution: 3
R-factor: 0.247
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 3
PCK3 PROCHECK H-bonds: 3
WCK1 WHAT_CHECK Packing: -2.694
WCK2 WHAT_CHECK Ramachandran: -5.387
WCK3 WHAT_CHECK Chi angles: -5.253
WCK4 WHAT_CHECK Backbone: -0.963

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).