SPACI score report for 1xuo in ASTRAL 2.08:

PDB Entry: 1xuo
SPACI score: 0.54
AEROSPACI score: 0.54

Experiment type: XRAY
Resolution: 1.8
R-factor: 0.185
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 1
PCK3 PROCHECK H-bonds: 1
WCK1 WHAT_CHECK Packing: -0.926
WCK2 WHAT_CHECK Ramachandran: 0.325
WCK3 WHAT_CHECK Chi angles: 1.149
WCK4 WHAT_CHECK Backbone: -1.177

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).