SPACI score report for 1v4b in ASTRAL 1.73:

PDB Entry: 1v4b
SPACI score: 0.5
AEROSPACI score: 0.5

Experiment type: XRAY
Resolution: 1.8
R-factor: 0.194
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 1
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: 0.2
WCK2 WHAT_CHECK Ramachandran: 0.612
WCK3 WHAT_CHECK Chi angles: 0.577
WCK4 WHAT_CHECK Backbone: -5.436

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).