SPACI score report for 1c16 in ASTRAL 2.08:

PDB Entry: 1c16
SPACI score: 0.15
AEROSPACI score: 0.15

Experiment type: XRAY
Resolution: 3.1
R-factor: 0.284
PCK1 PROCHECK Ramachandran: 1
PCK2 PROCHECK Chi-1 angle: 2
PCK3 PROCHECK H-bonds: 2
WCK1 WHAT_CHECK Packing: -1.396
WCK2 WHAT_CHECK Ramachandran: -3.573
WCK3 WHAT_CHECK Chi angles: -2.507
WCK4 WHAT_CHECK Backbone: -0.793

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).