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EXPERIMENTAL\MEDIAN [Width] [Sampling]
Compute the Median and the Median Absolute Deviation along the R spec-
trum and save them in the 2 associated arrays named BASELINE and RMS
(available in R%ASSOC%BASELINE% and R%ASSOC%RMS% respectively).
These quantities are computed in windows of the given Width (MHz, de-
fault 20). Windows are set every Sampling space (MHz, default width/2).
Intermediate values are then interpolated, so that the final Associated
Arrays are of size Nchan. Using a sampling of 1 channel is possible but
at larger computation cost.
For the first and last half windows (boundary conditions), flat values
are used (no extrapolation).
If the input channel in RY is blanked, the resulting channels in BASE-
LINE and RMS are also blanked. Blank channels do not contribute to the