SPACI score report for 1b9x in ASTRAL 2.07:

PDB Entry: 1b9x
SPACI score: 0.24
AEROSPACI score: 0.24

Experiment type: XRAY
Resolution: 3
R-factor: 0.217
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 2
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: -0.77
WCK2 WHAT_CHECK Ramachandran: -2.281
WCK3 WHAT_CHECK Chi angles: -1.068
WCK4 WHAT_CHECK Backbone: -0.342

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).