SPACI score report for 1u88 in ASTRAL 2.07:

PDB Entry: 1u88
SPACI score: 0.09
AEROSPACI score: 0.09

Experiment type: XRAY
Resolution: 3.5
R-factor: 0.22
PCK1 PROCHECK Ramachandran: 3
PCK2 PROCHECK Chi-1 angle: 3
PCK3 PROCHECK H-bonds: 3
WCK1 WHAT_CHECK Packing: -3.375
WCK2 WHAT_CHECK Ramachandran: -7.721
WCK3 WHAT_CHECK Chi angles: -4.622
WCK4 WHAT_CHECK Backbone: -3.223

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).