SPACI score report for 1g9n in ASTRAL 1.75:

PDB Entry: 1g9n
SPACI score: 0.23
AEROSPACI score: 0.23

Experiment type: XRAY
Resolution: 2.9
R-factor: 0.207
PCK1 PROCHECK Ramachandran: 2
PCK2 PROCHECK Chi-1 angle: 2
PCK3 PROCHECK H-bonds: 3
WCK1 WHAT_CHECK Packing: -2.309
WCK2 WHAT_CHECK Ramachandran: -5.176
WCK3 WHAT_CHECK Chi angles: -3.974
WCK4 WHAT_CHECK Backbone: -1.086

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).