Daryl, We've pushed a new warfile out to our development server, and you will now find commas after the NaNs: http://motherlode.ucar.edu:9080/thredds/ncss/grid/grib/NCEP/GFS/Global_0p5deg/files/GFS_Global_0p5deg_20130422_0600.grib2?var=Precipitable_water_entire_atmosphere&var=Convective_inhibition_surface&var=Total_precipitation_surface_Mixed_intervals_Accumulation&var=Convective_precipitation_surface_Mixed_intervals_Accumulation&var=Convective_available_potential_energy_surface&latitude=41.3669944444&longitude=-91.140575&temporal=all&vertCoord=&accept=csv&point=true The warfile for the current development version, 4.3.17, is available here: ftp://ftp.unidata.ucar.edu/pub/thredds/4.3/4.3.17/thredds.war Regards, Lansing Ticket Details =================== Ticket ID: OIJ-420182 Department: Support THREDDS Priority: Normal Status: Open