big header with value inside

hello

often coworker give me excel tables like that :

or better, like this :

The problem is that the specifications (as the minimum or maximum value) is in a big header.

Is there a way to keep the values of the specification for each parameter somewhere in powerbi without copying them on each time line for each parameter ?

Because after i want to do the comparison of the mean value by day and by parameter with the specification.

(Specification value is a number which should not change all the lines, so it is useless to recopy it each time... ?)

Thanks a lot