0 0 CALCULATE THE AREA AVERAGE OF THE U AND V COMPONENTS AT PRESSURE LEVELS FROM 0 TO 500KM CENTRED ON THE SURFACE VORTEX POSITION
1 1 CALCULATE THE AREA AVERAGE OF THE U AND V COMPONENTS AT PRESSURE LEVELS FROM 0 TO RADIUS GREATER THAN 500KM CENTRED ON THE SURFACE VORTEX POSITION
15 15 MISSING VALUE
