SPACI score report for 2f4p in ASTRAL 2.08:

PDB Entry: 2f4p
SPACI score: 0.51
AEROSPACI score: 0.51

Experiment type: XRAY
Resolution: 1.9
R-factor: 0.164
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 1
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: -1.091
WCK2 WHAT_CHECK Ramachandran: 0.6
WCK3 WHAT_CHECK Chi angles: 1.632
WCK4 WHAT_CHECK Backbone: -0.166

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).