All overviews in the aquasuite are examples only.
The pages are intended to be individually adapted to your own ideas.
All you have to do is click on the lock symbol and then you can customize each page as you wish.
Same goes for the Virtual Sensors.
The calculations seem to happen in floating points, but the Overview just rounds it to the nearest integer. Why?
I'd like to request a setting of precision (how many digits after the point), instead of assigning a fake unit.
you have to customize each element the way you want it. To do this, there is a context menu with the right mouse button. (when you in edit mode)