UV_TRACKS /WEIGHT

        [ASTRO\]UV_TRACKS  ...  /WEIGHT Mode [JyPerK Bandwidth] /TABLE [Name
    [/FRAME Size]] [/HOUR_ANGLE Hmin [Hmax]] [/HORIZON Elmin]  [/INTEGRATION
    t] [/STATIONS ALL|list]

    In  the  output UV table, the weight is by default constant, equal to 1.
    This can be modified using the /WEIGHT Mode option. Mode can be  UNIFORM
    (constant  weight),  AIRMASS (weight proportional to airmass^-2, i.e. to
    sin(elevation)^2) or FULL.

    With the option /WEIGHT FULL the weights are computed  from  the  system
    temperature,  derived from the frequency and receiver temperature.  This
    option requires two additional arguments to  specify  the  antenna  gain
    (conversion  from  Jy  to K, about 30 for ALMA below 350 GHz, between 22
    and 35, depending on the frequency for NOEMA) and the channel width  (in
    MHz). The frequency is derived from variable FREQUENCY.  If FREQUENCY is
    equal to FREQ_SIG, the image frequency defined by FREQ_IMA and  sideband
    gain  ration  (GAIN_IMAGE)  are  also used as in the ATM command.  Else,
    GAIN_IMAGE is set to zero.