SPACI score report for 3jtc in ASTRAL 2.07:

PDB Entry: 3jtc
SPACI score: 0.57
AEROSPACI score: 0.57

Experiment type: XRAY
Resolution: 1.6
R-factor: 0.192
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 1
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: -1.696
WCK2 WHAT_CHECK Ramachandran: -2.427
WCK3 WHAT_CHECK Chi angles: -1.334
WCK4 WHAT_CHECK Backbone: 3.228

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).