retrieve,
    levelist=0/5,
    section=h,
    stream=ocea,
    system=3,
    method=1,
    number=0/to/4,
    time=00,
    levtype=dp,
    product=inst,
    expver=1,
    param=129/130/145,
    class=od,
    date=20120101,
    type=of,
    step=24/to/96/by/24,
    expect=60,
    database=marsod,
    target=data.reference