SPACI score report for 2tgi in ASTRAL 2.04:

PDB Entry: 2tgi
SPACI score: 0.48
AEROSPACI score: 0.48

Experiment type: XRAY
Resolution: 1.8
R-factor: 0.173
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 2
PCK3 PROCHECK H-bonds: 3
WCK1 WHAT_CHECK Packing: -2.362
WCK2 WHAT_CHECK Ramachandran: -2.814
WCK3 WHAT_CHECK Chi angles: -1.853
WCK4 WHAT_CHECK Backbone: 0.558

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).