Following the installation of DC current transformers (DCCTs) to improve reproducibility of the M13 beamline magnet power supplies, the current regulation voltage signals have been monitored for extended periods, over 500 hours in most cases. This is a summary of the results obtained. The entire report, including figures, is attached as both pdf and ps files, and the figures are also attached individually. -- Glen Marshall mailto:Glen.Marshall@triumf.ca TRIUMF, 4004 Wesbrook Mall phone: 604-222-7466 VANCOUVER, BC V6T 2A3 fax: 604-222-1074