SPACI score report for 1nh6 in ASTRAL 1.73:

PDB Entry: 1nh6
SPACI score: 0.43
AEROSPACI score: 0.43

Experiment type: XRAY
Resolution: 2.05
R-factor: 0.197
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 1
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: -1.014
WCK2 WHAT_CHECK Ramachandran: -0.85
WCK3 WHAT_CHECK Chi angles: 1.118
WCK4 WHAT_CHECK Backbone: -5.938

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).