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Dave, Sorry, I spoke too soon in my response yesterday. I can't duplicate the problem you are seeing with the released netCDF-4.0, only with an earlier beta release that I had inadvertently installed and tested with, thinking it was the released version. Are you sure the ncdump you are using is the one built from netCDF-4.0 or later, released in June 2008? I just checked again by building a new version of ncdump from scratch from the June 4.0 release, and running the ncdump built from that shows the correct output: netcdf test_group_def { dimensions: Time = UNLIMITED ; // (1 currently) variables: double Time(Time) ; Time:units = "days since 1900-01-01" ; Time:long_name = "Time" ; data: Time = 3.1415926536 ; group: model2 { ... If you are still not seeing the line for the value of Time, please send more details about the platform and compilers you are using. Thanks! --Russ Russ Rew UCAR Unidata Program address@hidden http://www.unidata.ucar.edu Ticket Details =================== Ticket ID: REF-194673 Department: Support netCDF Priority: Normal Status: Closed