TABLE 2 



STATISTICS OF VARIABILITY OF DEPTHS OF SELECTED 

 ISOTHERMS, FROM 6-MINUTE SERIES 



20.0° 17.0° 15.5° 14.0° 12.5' 



Mean 



Standard deviation 



Minimum 



Maximum 



Range 



N 4762 4762 4762 4762 4749 



415 



