SPACI score report for 2q4j in ASTRAL 2.08:

PDB Entry: 2q4j
SPACI score: 0.47
AEROSPACI score: 0.47

Experiment type: XRAY
Resolution: 1.86
R-factor: 0.171
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 2
PCK3 PROCHECK H-bonds: 3
WCK1 WHAT_CHECK Packing: -1.867
WCK2 WHAT_CHECK Ramachandran: -3.025
WCK3 WHAT_CHECK Chi angles: -2.143
WCK4 WHAT_CHECK Backbone: 2.518

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).