SPACI score report for 4gtv in ASTRAL 2.04:

PDB Entry: 4gtv
SPACI score: 0.51
AEROSPACI score: 0.51

Experiment type: XRAY
Resolution: 1.95
R-factor: 0.17
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 1
PCK3 PROCHECK H-bonds: 1
WCK1 WHAT_CHECK Packing: -0.733
WCK2 WHAT_CHECK Ramachandran: -0.537
WCK3 WHAT_CHECK Chi angles: -1.506
WCK4 WHAT_CHECK Backbone: 4.952

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).