SPACI score report for 2or4 in ASTRAL 2.07:

PDB Entry: 2or4
SPACI score: 0.58
AEROSPACI score: 0.58

Experiment type: XRAY
Resolution: 1.62
R-factor: 0.186
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 1
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: -1.262
WCK2 WHAT_CHECK Ramachandran: -1.082
WCK3 WHAT_CHECK Chi angles: -0.318
WCK4 WHAT_CHECK Backbone: 2.572

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).