Detail View graph range seems higher than necessary

When using detailed view of my system outputs, the graph range on the kWh side seems far higher than it needs to be, so it is hard to see the graph detail.
The highest value on this example is generation at 53.6kWh, so a max of 60kWh or 75kWh would be plenty. The lowest value is Net at -34kWh, so -40kWh or -50kWh would be enough, but the graph goes all the way from -100kWh to +100kWh.
Happy to experiment a bit with the code to see what could be done here and submit a PR, is the site open source?