SPACI score report for 3p76 in ASTRAL 2.07:

PDB Entry: 3p76
SPACI score: 0.49
AEROSPACI score: 0.49

Experiment type: XRAY
Resolution: 1.93
R-factor: 0.169
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 1
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: -0.675
WCK2 WHAT_CHECK Ramachandran: -1.123
WCK3 WHAT_CHECK Chi angles: 0.706
WCK4 WHAT_CHECK Backbone: -0.555

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).