RETRIEVE,
    CLASS      = E4,
    TYPE       = CL,
    STREAM     = MODA,
    EXPVER     = 0001,
    REPRES     = SH,
    LEVTYPE    = ML,
    LEVELIST   = 1,
    PARAM      = 155,
    DATE       = JAN,
    DOMAIN     = G,
    TARGET     = reference.data