SPACI score report for 2p4t in ASTRAL 2.06:

PDB Entry: 2p4t
SPACI score: 0.84
AEROSPACI score: 0.84

Experiment type: XRAY
Resolution: 1.15
R-factor: 0.193
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 1
PCK3 PROCHECK H-bonds: 1
WCK1 WHAT_CHECK Packing: 2.052
WCK2 WHAT_CHECK Ramachandran: -1.227
WCK3 WHAT_CHECK Chi angles: -1.195
WCK4 WHAT_CHECK Backbone: 1.338

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).