A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data.
Maybe this helps. The link below is the earlier document produced which still works with the IF formula. Cell J8 is read by J21, which contains the formula, and so on down and across. Cell Q8 adds J21 to J29 and updates as scores are entered. As you can see this document accepts a blank cell.
https://www.dropbox.com/s/tn5z5p14et2018a/1A%20Programmed%20Temp.xlsm?dl=0