Your attached image is not showing anything. However, it would probably not help much anyway. What we really need is a packaged workbook. If you can attach one, we can probably help. If you have confidential data, please see Anonymize your Tableau Package Data for Sharing |Tableau Support Community.
Based on what I can see from your question, I am puzzled why you are summing all of the values together, and then are wanting a way to split them apart again. Why not just plot each of the values in a separate line using Measure Names/Measure Values?