RETRIEVE,
    CLASS      = RD,
    TYPE       = FC,
    STREAM     = OPER,
    EXPVER     = f36f,
    REPRES     = SH,
    LEVTYPE    = ML,
    LEVELIST   = 1,
    PARAM      = 210073/210074,
    DATE       = 20041015,
    TIME       = 1200,
    STEP       = 0,
    DOMAIN     = G,
    TARGET     = reference.data