SPACI score report for 1r74 in ASTRAL 2.06:

PDB Entry: 1r74
SPACI score: 0.27
AEROSPACI score: 0.27

Experiment type: XRAY
Resolution: 2.55
R-factor: 0.225
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 3
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: -2.095
WCK2 WHAT_CHECK Ramachandran: -2.245
WCK3 WHAT_CHECK Chi angles: -3.524
WCK4 WHAT_CHECK Backbone: 2.839

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).