SPACI score report for 2efw in ASTRAL 2.06:

PDB Entry: 2efw
SPACI score: 0.21
AEROSPACI score: 0.21

Experiment type: XRAY
Resolution: 2.5
R-factor: 0.293
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 2
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: -1.17
WCK2 WHAT_CHECK Ramachandran: -5.636
WCK3 WHAT_CHECK Chi angles: -4.365
WCK4 WHAT_CHECK Backbone: -0.828

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).