SPACI score report for 1u8n in ASTRAL 2.04:

PDB Entry: 1u8n
SPACI score: 0.32
AEROSPACI score: 0.32

Experiment type: XRAY
Resolution: 2.56
R-factor: 0.205
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 1
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: 0.131
WCK2 WHAT_CHECK Ramachandran: -0.626
WCK3 WHAT_CHECK Chi angles: -2.562
WCK4 WHAT_CHECK Backbone: 0.246

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).