SPACI score report for 1a37 in ASTRAL 1.59:

PDB Entry: 1a37
SPACI score: 0.04
AEROSPACI score: 0.04

Experiment type: XRAY
Resolution: 3.6
R-factor: 0.32
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 3
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: -1.359
WCK2 WHAT_CHECK Ramachandran: -5.839
WCK3 WHAT_CHECK Chi angles: -4.241
WCK4 WHAT_CHECK Backbone: -0.551

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).