SPACI score report for 1vi6 in ASTRAL 1.75:

PDB Entry: 1vi6
SPACI score: 0.54
AEROSPACI score: 0.54

Experiment type: XRAY
Resolution: 1.95
R-factor: 0.208
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 1
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: -0.455
WCK2 WHAT_CHECK Ramachandran: -0.939
WCK3 WHAT_CHECK Chi angles: -0.605
WCK4 WHAT_CHECK Backbone: 1.077

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).