SPACI score report for 2q4i in ASTRAL 1.75:

PDB Entry: 2q4i
SPACI score: 0.65
AEROSPACI score: 0.65

Experiment type: XRAY
Resolution: 1.71
R-factor: 0.132
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 2
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: -2.223
WCK2 WHAT_CHECK Ramachandran: -2.589
WCK3 WHAT_CHECK Chi angles: -1.284
WCK4 WHAT_CHECK Backbone: -1.983

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).