Multiday measuring grouping

Is there a way to group data from specific time interval of multiple days?

What would i like to do:

I measure the power consumption of my house and show it in a panel by interval of 15m.

The consumption is very different between the days and so i cam up by the idea to create a average day charge. This chart uses the 15m intervals from each day of a month and draw the average consumption for this time interval of the day. Hopefully i can see in which time i uses the most energy on the day so i can get a better overview of the consumption.

Is there a way to do that in grafana and how can i do it?