SPACI score report for 1udh in ASTRAL 1.55:

PDB Entry: 1udh
SPACI score: 0.52
AEROSPACI score: 0.52

Experiment type: XRAY
Resolution: 1.75
R-factor: 0.191
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 2
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: 2.245
WCK2 WHAT_CHECK Ramachandran: 0.212
WCK3 WHAT_CHECK Chi angles: 0.423
WCK4 WHAT_CHECK Backbone: 0.642

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).