SPACI score report for 3m1b in ASTRAL 2.07:

PDB Entry: 3m1b
SPACI score: 0.07
AEROSPACI score: 0.07

Experiment type: XRAY
Resolution: 3.1
R-factor: 0.318
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 3
PCK3 PROCHECK H-bonds: 3
WCK1 WHAT_CHECK Packing: -3.226
WCK2 WHAT_CHECK Ramachandran: -4.796
WCK3 WHAT_CHECK Chi angles: -5.347
WCK4 WHAT_CHECK Backbone: 1.272

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).