SPACI score report for 1nxc in ASTRAL 1.67:

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

Experiment type: XRAY
Resolution: 1.51
R-factor: 0.172
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 1
PCK3 PROCHECK H-bonds: 1
WCK1 WHAT_CHECK Packing: -0.779
WCK2 WHAT_CHECK Ramachandran: -0.43
WCK3 WHAT_CHECK Chi angles: 0.34
WCK4 WHAT_CHECK Backbone: -6.488

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).