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 2013. They contain VBasic programs that will alert anti-virus software. Upon loading the workbook, ’editing’ and ‘content’ must be ‘enabled’ when your security settings offer those options.
Exemplars of the SFEcon Algorithm
     MS Windows
          Excel 2013