SPACI score report for 1pwg in ASTRAL 2.06:

PDB Entry: 1pwg
SPACI score: 1
AEROSPACI score: 1

Experiment type: XRAY
Resolution: 1.07
R-factor: 0.106
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 1
PCK3 PROCHECK H-bonds: 1
WCK1 WHAT_CHECK Packing: 1.586
WCK2 WHAT_CHECK Ramachandran: -0.55
WCK3 WHAT_CHECK Chi angles: 0.247
WCK4 WHAT_CHECK Backbone: 3.401

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).