Hello, I tried modifying the entries for SHIP data in $GEMTBL/config/datatype.tbl ~ldm/etc/pqact.gempak_decoders in GEMPAK 5.8.1 to store SHIP data in daily files instead of hourly files. This works fine for GARP, but NMAP2 cannot display the data. Is there something else I need to modify to get NMAP2 to work with this? Thanks, David -- David Ovens e-mail: address@hidden Research Meteorologist phone: (206) 685-8108 Dept of Atm. Sciences plan: Real-time MM5 forecasting for the Box 351640 Pacific Northwest University of Washington http://www.atmos.washington.edu/mm5rt Seattle, WA 98195 Weather Graphics and Loops http://www.atmos.washington.edu/~ovens/loops