Difference between Graph and Variable

[Rumo]

Hello,
i am wondering why the value of the energy usage seems stable in the variable but the Graph goes up and down?
Can someone explain me this?

Thanks for your help.

[Rseding91]

The variable is the average of everything shown in the graph.

[Rumo]

Thanks for your answer.

Is there any variable for this or must i calculate that on my own?

Thanks for your help