Hi Robert, Sorry to inform you that there has been no updates to gribtonc since you obtained it. At this time, I would not use the decoder because none of the tables have been updated so it could possibly give wrong results. There is a c Grib decoder at: http://www.cpc.ncep.noaa.gov/products/wesley/wgrib.html and a Java decoder that is part of the netcdf-java package at: http://www.unidata.ucar.edu/software/netcdf-java/ Hope this helps, Robb... Ticket Details =================== Ticket ID: NDB-511214 Department: Support netCDF Decoders Priority: Normal Status: Open