netcdf in {
  dimensions:
    lat = 2 ;
    lon = 4 ;
    time = UNLIMITED ; // (10 currently)
    vrt_nbr = 2 ;

  variables:
    float climatology_bounds(time,vrt_nbr) ;
      climatology_bounds:purpose = "Variable containing CF-compliant climatology bounds for time dimension" ;

    float lat(lat) ;
      lat:long_name = "Latitude (typically midpoints)" ;
      lat:units = "degrees_north" ;
      lat:bounds = "lat_bnd" ;

    float lat_bnd(lat,vrt_nbr) ;
      lat_bnd:purpose = "Cell boundaries for lat coordinate" ;

    float lon(lon) ;
      lon:long_name = "Longitude (typically midpoints)" ;
      lon:units = "degrees_east" ;

    float three_dmn_rec_var(time,lat,lon) ;
      three_dmn_rec_var:long_name = "three dimensional record variable" ;
      three_dmn_rec_var:units = "watt meter-2" ;
      three_dmn_rec_var:_FillValue = -99.f ;

    double time(time) ;
      time:long_name = "time" ;
      time:units = "days since 1964-03-12 12:09:00 -9:00" ;
      time:calendar = "gregorian" ;
      time:bounds = "time_bnds" ;
      time:climatology = "climatology_bounds" ;

    float time_bnds(time,vrt_nbr) ;
      time_bnds:purpose = "Cell boundaries for time coordinate" ;

  // global attributes:
    :history = "Fri Jul  8 09:52:19 2022: ncks -M -v three_dmn_rec_var,time_bnds /Users/zender/in.nc /Users/zender/cdl.nc" ;
    :NCO = "netCDF Operators version 5.1.0-beta04 (Homepage = http://nco.sf.net, Code = http://github.com/nco/nco)" ;


  data:
    climatology_bounds = 
    0.5, 1.5, 
    1.5, 2.5, 
    2.5, 3.5, 
    3.5, 4.5, 
    4.5, 5.5, 
    5.5, 6.5, 
    6.5, 7.5, 
    7.5, 8.5, 
    8.5, 9.5, 
    9.5, 10.5 ;

    lat = -90, 90 ;

    lat_bnd = 
    -90, 0, 
    0, 90 ;

    lon = 0, 90, 180, 270 ;

    three_dmn_rec_var = 
    1, 2, 3, 4, 
    5, 6, 7, 8, 
    9, 10, 11, 12, 
    13, 14, 15, 16, 
    17, 18, 19, 20, 
    21, 22, 23, 24, 
    25, 26, 27, 28, 
    29, 30, 31, 32, 
    33, 34, 35, 36, 
    37, 38, 39, 40, 
    41, 42, 43, 44, 
    45, 46, 47, 48, 
    49, 50, 51, 52, 
    53, 54, 55, 56, 
    57, 58, 59, 60, 
    61, 62, 63, 64, 
    65, 66, 67, 68, 
    69, 70, 71, 72, 
    73, 74, 75, 76, 
    77, 78, 79, 80 ;

    time = 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 ;

    time_bnds = 
    0.5, 1.5, 
    1.5, 2.5, 
    2.5, 3.5, 
    3.5, 4.5, 
    4.5, 5.5, 
    5.5, 6.5, 
    6.5, 7.5, 
    7.5, 8.5, 
    8.5, 9.5, 
    9.5, 10.5 ;

} // group /