SPACI score report for 1j4a in ASTRAL 1.63:

PDB Entry: 1j4a
SPACI score: 0.45
AEROSPACI score: 0.45

Experiment type: XRAY
Resolution: 1.9
R-factor: 0.204
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 2
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: 0.402
WCK2 WHAT_CHECK Ramachandran: -0.086
WCK3 WHAT_CHECK Chi angles: -0.332
WCK4 WHAT_CHECK Backbone: -0.17

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).