Amazing that after years RHMSD is now unknown from the
mathematical society, except for the stuff posted in
the Mathsoft Collaboratory [now PTC] .
But not accessible if you don't have Mathcad .
Google for: "Contour RHMSD"

This work sheet computes in 42 min [1.66GHz]

Jean

Contour RHMSD uvz Copy.sm (152,77 KiB) scaricato 1408 volta(e).

... here is the negative.

Contour RHMSD uvz Copy.sm (154,21 KiB) scaricato 1476 volta(e).