SPACI score report for 1b9o in ASTRAL 2.01:

PDB Entry: 1b9o
SPACI score: 0.87
AEROSPACI score: 0.87

Experiment type: XRAY
Resolution: 1.15
R-factor: 0.119
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 2
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: -1.598
WCK2 WHAT_CHECK Ramachandran: -1.127
WCK3 WHAT_CHECK Chi angles: -0.5
WCK4 WHAT_CHECK Backbone: 0.153

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).