Version 66.3 of the Data Analysis Tool is now ready for download.
Please download it from https://www.ukhorseracing.co.uk/Tools/DAToolDownloadAndSetup.asp.
Please note that you will need MS Windows and MS Excel to use this tool.
The update is to fix a long term niggle with the ROI% calculation. Until this version if a filter system had no winners, but some runners, then the ROI% returned 0% when it should have been -100%.