netcdf groups_example {

group: UnitedStates {
  dimensions:
  	time = UNLIMITED ;
  variables:
  	float average_temperature(time) ;
  data:
	time = 1, 2;
	
  group: Washington {
    dimensions:
    	time = UNLIMITED ;
    	stations = 47 ;
    variables:
    	float temperature(time, stations) ;
    data:
    } // group Washington

  group: Oregon {
    dimensions:
    	time = UNLIMITED ;
    	stations = 61 ;
    variables:
    	float temperature(time, stations) ;
    data:
    } // group Oregon

  group: California {
    dimensions:
    	time = UNLIMITED ;
    	stations = 53 ;
    variables:
    	float temperature(time, stations) ;
    data:
    } // group California
  } // group UnitedStates
}