SPACI score report for 1t8i in ASTRAL 1.73:

PDB Entry: 1t8i
SPACI score: 0.17
AEROSPACI score: 0.17

Experiment type: XRAY
Resolution: 3
R-factor: 0.244
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 3
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: -1.981
WCK2 WHAT_CHECK Ramachandran: -4.33
WCK3 WHAT_CHECK Chi angles: -3.043
WCK4 WHAT_CHECK Backbone: -3.667

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).