SPACI score report for 2ot6 in ASTRAL 2.07:

PDB Entry: 2ot6
SPACI score: 0.3
AEROSPACI score: 0.3

Experiment type: XRAY
Resolution: 2.5
R-factor: 0.191
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 2
PCK3 PROCHECK H-bonds: 3
WCK1 WHAT_CHECK Packing: -2.27
WCK2 WHAT_CHECK Ramachandran: -2.265
WCK3 WHAT_CHECK Chi angles: -4.646
WCK4 WHAT_CHECK Backbone: -0.761

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).