Five embodiments of Model 0 are available for download from this page. Each prototype is an Excel workbook in which the algorithm has been programmed to operate on a differently aggregated input/output structure. Clicking on a workbook's button below causes your computer to open the corresponding workbook in your Excel program.

These workbooks are written in Excel 2003. They contain VBasic programs that will alert anti-virus software. If opened in Excel 2003, your ‘security setting’ must be no higher than ‘medium’ when the workbook is loaded, and macros must be ‘enabled’ in order to run the programs. If opened in later editions of Excel, ’editing’ and ‘content’ must be ‘enabled’ if and when your security settings offer those options.
Exemplars of the SFEcon Algorithm
     MS Windows
          Excel 2003