SPACI score report for 1ex2 in ASTRAL 1.55:

PDB Entry: 1ex2
SPACI score: 0.48
AEROSPACI score: 0.48

Experiment type: XRAY
Resolution: 1.85
R-factor: 0.195
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 2
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: 0.485
WCK2 WHAT_CHECK Ramachandran: -0.084
WCK3 WHAT_CHECK Chi angles: 1.202
WCK4 WHAT_CHECK Backbone: 1.068

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).