SPACI score report for 3hdd in ASTRAL 1.55:

PDB Entry: 3hdd
SPACI score: 0.41
AEROSPACI score: 0.41

Experiment type: XRAY
Resolution: 2.2
R-factor: 0.204
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 2
PCK3 PROCHECK H-bonds: 1
WCK1 WHAT_CHECK Packing: 2.331
WCK2 WHAT_CHECK Ramachandran: -0.088
WCK3 WHAT_CHECK Chi angles: 2.045
WCK4 WHAT_CHECK Backbone: 2.062

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).