Surface postprocessing ...?

I have succesfully had Code_Saturne solve a flow study study for me and I have imported the solution as a MED file into Salomé. As I have more than one face assigned as output and output I would like to integrate the distribution of velocities normal to these surfaces to see how much flows through the _individual_ inlets and outlets. In the output listing Code_Saturne reports the sum of inlets and outlets, but I would like to see them individually. Can I do that with Salomé or is there a "increase verbosity" option in Saturne with respect to this matter?

Thanks for your input.