SPACI score report for 1sl3 in ASTRAL 1.69:

PDB Entry: 1sl3
SPACI score: 0.48
AEROSPACI score: 0.48

Experiment type: XRAY
Resolution: 1.81
R-factor: 0.21
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 1
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: -0.221
WCK2 WHAT_CHECK Ramachandran: -1.831
WCK3 WHAT_CHECK Chi angles: 0.948
WCK4 WHAT_CHECK Backbone: -4.558

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).