SPACI score report for 3tao in ASTRAL 2.06:

PDB Entry: 3tao
SPACI score: 0.68
AEROSPACI score: 0.68

Experiment type: XRAY
Resolution: 1.45
R-factor: 0.162
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 1
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: -1.325
WCK2 WHAT_CHECK Ramachandran: -0.494
WCK3 WHAT_CHECK Chi angles: 0.986
WCK4 WHAT_CHECK Backbone: 3.564

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).