SPACI score report for 1gnn in ASTRAL 1.69:

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

Experiment type: XRAY
Resolution: 2.3
R-factor: 0.183
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 3
PCK3 PROCHECK H-bonds: 3
WCK1 WHAT_CHECK Packing: 1.005
WCK2 WHAT_CHECK Ramachandran: -2
WCK3 WHAT_CHECK Chi angles: -3.509
WCK4 WHAT_CHECK Backbone: -5.58

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).