SPACI score report for 3n0i in ASTRAL 2.01:

PDB Entry: 3n0i
SPACI score: 0.59
AEROSPACI score: 0.59

Experiment type: XRAY
Resolution: 1.65
R-factor: 0.16
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 1
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: -0.677
WCK2 WHAT_CHECK Ramachandran: -0.058
WCK3 WHAT_CHECK Chi angles: -0.608
WCK4 WHAT_CHECK Backbone: -0.976

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).