ALL%DROP

                INTEGER ALL%DROP[2]

      This  is  an integer array giving the number of edge channels ignored when
    reading a UV table. Edge channels may have different weights than the  other
    ones, especially for ALMA data because of the off-line Doppler correction.

    Such  low weights edge channels are automatically dropped for Single fields,
    so you can use ALL%DROP = 0, but not yet for Mosaics, where ALL%DROP = 5  is
    more appropriate.

    Larger values may be useful for SURVEY mode.