UV_TRACKS /WEIGHT

        [CLEAN\]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(eleva-
    tion)^2) or FULL.

    With  the  option /WEIGHT FULL the weights are computed from the system tem-
    perature, 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 im-
    age  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.