OK this would be how I do it. the number refers to the number of pills granted they are 25mcg.

1/2/3/days 4-20 4/3/3/3/3/3/3/2/2/2/2/2/2/1/1/1/1/1/1/.5/.5/.5/.5

That is 42 days, and the percents are 7%/40%/53% that is pretty much how I ran mine.

Pain