528 



H. MOHN. METEOROLOGY. 



[norw. POL. EXP. 



Mean for the year O'lSl 



Minimum 0-097 November 



Maximum 0-192 August 



Range 0095. 



The march of the probability of precipitation from month to month runs 

 nearly parallel with the march of the amount of cloud. PI. IX. (1 mm. ^ 

 = 1 p. c. t.). 



WIND-ROSES FOR THE FREQUENCY OF PRECIPITATION. 



The numbers in the following Table are the numbers (smoothed) of cases 

 in which a fall of rain, snow, sleet or hail has been observed with the 

 respective wind in the different months during the drift of Fram. 



* On Plate IX, cm. should be mm. 



