Creating a multiple line chart report based on selections from disconnected slicers

Hi!

I have a report that I need to complete. I have succeeded to create a multiple line chart based on selections from two disconnected slicers, but the data in the line charts are wrong.

First some explaination of my case. Below you see a table with sampledata on fish. here you see a small part, but the line charts should show Avgweight on x axis and value on y axis from Table2. There can be a line chart per group and I can choose line charts from the disconnected slicer(s) which consist of a distinct list of group elements. I don't want to bother you explaining why the data seems a bit duplicated, but what I need is to pick one value, for instance for avgweight 959 for group K-factor you see three rows. I need to pick one of values, perhaps the one with min(index) which is 2821. Later I can add more slicers like cage, location, sampledate and so on, but the measure must work without using these. I hope you understand. A last thing I need to add to the measures a logic so they return blank if no elements in the Measurement1 slicer are selected. Just now all lines are shown if I have not selected any items. Below you see two of the measures I have started on. the first should calculate min values from the K-factor in the group column, and the next should calculate min values from the Pigment in the group column. I need to correct thes measures so I work as described above. the calculate part is of course wrong and must be replaced.