SPACI score report for 2ipn in ASTRAL 2.03:

PDB Entry: 2ipn
SPACI score: 0.88
AEROSPACI score: 0.88

Experiment type: XRAY
Resolution: 1.15
R-factor: 0.153
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 1
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: 0.783
WCK2 WHAT_CHECK Ramachandran: 1.3
WCK3 WHAT_CHECK Chi angles: 2.034
WCK4 WHAT_CHECK Backbone: 1.209

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).