SUM cells based on their left cell's condition

Question

My Google Sheets has many columns. Data is organized in pairs. One cell is date and another is number. I want to get a SUM of all the cells where their pair is a specific date.

For example, in the above image, I want to sum all the values of the day 03/24. I expect the result: 6+13+36 = 55.

How can I do that in Google Sheets?

Answer 1

Use SUMIF with same size but offset ranges:

=SUMIF(B2:F13,"03/24",C2:G13)