SPACI score report for 2j6b in ASTRAL 1.73:

PDB Entry: 2j6b
SPACI score: 0.75
AEROSPACI score: 0.75

Experiment type: XRAY
Resolution: 1.3
R-factor: 0.161
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 1
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: -0.162
WCK2 WHAT_CHECK Ramachandran: 1.57
WCK3 WHAT_CHECK Chi angles: 0.403
WCK4 WHAT_CHECK Backbone: -5.94

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).