printVarSummary(seaice_conc_monthly_cdr):

Variable: seaice_conc_monthly_cdr
Type: byte
Total Size: 46441472 bytes
            46441472 values
Number of Dimensions: 3
Dimensions and sizes:	[time | 341] x [ygrid | 448] x [xgrid | 304]
Coordinates:
            time: [141195..151544]
            ygrid: [5837500..-5337500]
            xgrid: [-3837500..3737500]
Number Of Attributes: 14
  _FillValue :	-1
  valid_range :	( 0, 100 )
  _Unsigned :	true
  long_name :	NOAA/NSIDC Climate Data Record of Passive Microwave Monthly Northern Hemisphere Sea Ice Concentration
  standard_name :	sea_ice_area_fraction
  units :	1
  scale_factor :	0.01
  coordinates :	longitude latitude time
  flag_values :	( -5, -4, -3, -2, -1 )
  flag_meanings :	pole_hole lakes coastal land_mask missing_data
  datum :	+ellps=urn:ogc:def:crs:EPSG::4326
  grid_mapping :	projection
  reference :	http://nsidc.org/api/metadata?id=g02202
  ancillary_variables :	stdev_of_seaice_conc_monthly_cdr qa_of_seaice_conc_monthly_cdr