retrieve,
    DOMAIN=EUROATL,LEVTYPE=110,LEVELIST=1,DATE=20040102,TIME=1800,STEP=6,PARAM=33.201,CLASS=MS,TYPE=FG,STREAM=OPER,EXPVER=0001,COUNTRY=IT,MODEL=HRM,BCMODEL=IFS,ICMODEL=MVOI,
    target=reference.data 