SPACI score report for 1vs6 in ASTRAL 1.75:

PDB Entry: 1vs6
SPACI score: -0.03
AEROSPACI score: -0.03

Experiment type: XRAY
Resolution: 3.46
R-factor: 0.279
PCK1 PROCHECK Ramachandran: 4
PCK2 PROCHECK Chi-1 angle: 3
PCK3 PROCHECK H-bonds: 3
WCK1 WHAT_CHECK Packing: -6.272
WCK2 WHAT_CHECK Ramachandran: -8.196
WCK3 WHAT_CHECK Chi angles: -6.054
WCK4 WHAT_CHECK Backbone: -8.145

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).