SPACI score report for 2f6m in ASTRAL 2.07:

PDB Entry: 2f6m
SPACI score: 0.4
AEROSPACI score: 0.4

Experiment type: XRAY
Resolution: 2.1
R-factor: 0.242
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 1
PCK3 PROCHECK H-bonds: 1
WCK1 WHAT_CHECK Packing: 1.281
WCK2 WHAT_CHECK Ramachandran: -1.401
WCK3 WHAT_CHECK Chi angles: -1.577
WCK4 WHAT_CHECK Backbone: 5.004

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).