Menu: View results->Show min max
Show min/max
Show minimum
Show maximum
Show both
With this option you can see the minimum and maximum of the chosen result.
Show mix max is supported for results defined over nodes or gauss points.
Note: This minimum and maximum can be absolute - for all the meshes/sets/cuts - or relative (local) to the ones displayed. This can be selected from the pull-down menu Options -> Contour -> Set Limits.