SPACI score report for 3nft in ASTRAL 2.07:

PDB Entry: 3nft
SPACI score: 0.68
AEROSPACI score: 0.68

Experiment type: XRAY
Resolution: 1.51
R-factor: 0.161
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 1
PCK3 PROCHECK H-bonds: 1
WCK1 WHAT_CHECK Packing: 1.479
WCK2 WHAT_CHECK Ramachandran: 2.504
WCK3 WHAT_CHECK Chi angles: 1.401
WCK4 WHAT_CHECK Backbone: 1.302

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).