SPACI score report for 2sli in ASTRAL 1.71:

PDB Entry: 2sli
SPACI score: 0.5
AEROSPACI score: 0.5

Experiment type: XRAY
Resolution: 1.8
R-factor: 0.185
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 1
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: -0.191
WCK2 WHAT_CHECK Ramachandran: -0.908
WCK3 WHAT_CHECK Chi angles: -0.647
WCK4 WHAT_CHECK Backbone: -5.53

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).