SPACI score report for 3ng0 in ASTRAL 2.03:

PDB Entry: 3ng0
SPACI score: 0.19
AEROSPACI score: 0.19

Experiment type: XRAY
Resolution: 2.8
R-factor: 0.287
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 2
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: -1.371
WCK2 WHAT_CHECK Ramachandran: -2.142
WCK3 WHAT_CHECK Chi angles: -2.886
WCK4 WHAT_CHECK Backbone: 2.09

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).