I’m trying to add historical data older than what Tiller imports from my account and I saw this article showing “How to manually add weekly data”, but it only brings the following formula to Google Sheets:

Anyone knows the formula to do the same in excel? (I’d actually create the formula as I did for the “month”, but I couldn’t understand the logic being used for that column…)
Thanks

I guess I found the formula that is consistent with what I’m seeing in the values imported automatically. Assuming the date is in a column called “Date”. here’s what worked for me: