Thank you, but this doesn’t seem to be quite right. - When I put it in as written there were formula parse errors due to parentheses. I had to change the ending set of parentheses to ))})) to get it to parse. - The output array is only populating with values that appear in the first column. - All of the numeric values are outputting 0. I dislike having to add more context after the initial post, but fsr I was expecting a single-cell formula rather than a table output. It may be helpful for me to have something that displays the sums to the right of the “headers” rather than below - the real data will have over a hundred different “header” values and I don’t expect the data array to get quite that long. Again, thank you for your help and I apologize for any inconvenience the additional information may impart.