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UV_NOISE 

        UV_NOISE

    UV_NOISE  computes for each UV distance the RMS of the visibilities out-
    side the line. This rms is compared to the current weight of  the  visi-
    bilities.   After  this, a median scaling factor is computed on a series
    of visibilities, and the weight of the visibilities  is  rescaled  using
    this median factor.

    UV_NOISE optionally flag data for which the estimated scaling factor de-
    viates substantially from the median.