SPACI score report for 1pa6 in ASTRAL 1.65:

PDB Entry: 1pa6
SPACI score: 0.31
AEROSPACI score: 0.31

Experiment type: XRAY
Resolution: 2.45
R-factor: 0.223
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 2
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: -0.368
WCK2 WHAT_CHECK Ramachandran: -1.695
WCK3 WHAT_CHECK Chi angles: 0.279
WCK4 WHAT_CHECK Backbone: -0.173

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).