SPACI score report for 1m6o in ASTRAL 2.02:

PDB Entry: 1m6o
SPACI score: 0.56
AEROSPACI score: 0.56

Experiment type: XRAY
Resolution: 1.6
R-factor: 0.214
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 1
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: 0.082
WCK2 WHAT_CHECK Ramachandran: 0.342
WCK3 WHAT_CHECK Chi angles: 0.787
WCK4 WHAT_CHECK Backbone: 1.266

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).