Fairchij: That info is a few years old from a POET white paper. The error is mine. I guess I should correct it:)
I just fixed it for you and had Google Sheets do the actual calculations:
https://docs.google.com/spreadsheets/d/1099jzA0RU76Q3aQpEh5R_2wtCtB3kbFKsRqv80i-yWw/
I also linked the original document, an OPEL Technologies presentation of 2012. That document has some more details which are still looking interesting.