The spreadsheet is mine. Happy to remove the post if you don't feel anyone will find it of any use. I was simply taking the "Answer your own question – share your knowledge, Q&A-style" at face value. You should be able to download the spreadsheet from the download.xls button after following the link. Alternatively you can use this direct download link academia.edu/attachments/36780111/…

Knowledge sharing since no one else had posed the question

For an Excel and VBA implementation with open source code see here