SPACI score report for 4e9s in ASTRAL 2.08:

PDB Entry: 4e9s
SPACI score: 0.96
AEROSPACI score: 0.96

Experiment type: XRAY
Resolution: 1.06
R-factor: 0.127
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 1
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: -2.056
WCK2 WHAT_CHECK Ramachandran: -0.557
WCK3 WHAT_CHECK Chi angles: 0.557
WCK4 WHAT_CHECK Backbone: 1.66

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).