Collecting seperated data results of multiple grids

In this case I would like to know for each grid (4 pieces) how much sunlight is available on 21th June. I use the list item component which it makes possible by scrolling to make a calculation for each grid seperately. I also unflatten. My question is:

  1. By using this (see file below) the legend doesn’t look well. How to make the text of the legend clear?

  2. To reduce actions for collecting data results I would like to know for each grid the average amount of sun light hours. How can i do this in one run?

Thanks for any suggestions and help.

-J. (576.7 KB)