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UV_CHECK 

        [CLEAN\]UV_CHECK  Beams|Nulls|Integration [/FILE FileIn]

      Check current UV data for weight consistency, or the UV data in the speci-
    fied file if the /FILE option is present.

      BEAMS
      List  which channel range can be processed with the same synthesized beam.
    See HELP UV_CHECK BEAMS for further details.

      NULLS
      Check if there are null visibilities with non-zero weights, and flag
      them if found.

      INTEGRATION
      Attempt to estimate the integration time. This is done by comparing
      the time stamps of consecutive observations, unless an INTEGRATION
      column is present.

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