READ /NOTRAIL

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READ /NOTRAIL

            [CLEAN\]READ Buffer File /NOTRAIL [/FREQUENCY Freq] [/RANGE Min  Max
        Type]

        When  reading  UV  Tables, ignores any trailing column. Trailing columns
        normally appear for mosaics. However, ALMA sometimes uses  known  proper
        motions  to shift (by small amounts) phase centers between two observing
        periods, yielding pseudo-mosaics with tiny  (in  general  insignificant)
        displacements.  The /NOTRAIL option allows to ignore these details.