SPACI score report for 2f4w in ASTRAL 2.08:

PDB Entry: 2f4w
SPACI score: 0.44
AEROSPACI score: 0.44

Experiment type: XRAY
Resolution: 2
R-factor: 0.19
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 2
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: -0.225
WCK2 WHAT_CHECK Ramachandran: -1.1460000000000001
WCK3 WHAT_CHECK Chi angles: -1.03
WCK4 WHAT_CHECK Backbone: 3.61

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).