H. MOHN. METEOROLOGY. 



[NORW. POL. EXP. 



Taking the means for the 3 (or 2) years for each month, we obtain the 

 following Mean temperature for each day of the year. 



Tm = -19-19 + 18-715. sin (2679-'5 + m) + 2-147. sin (102 l-'8 + 2w) 

 which gives 



Minimum - 35' 94 January 25tt. 

 Maximum + l'60 July 15i. 

 Annual Range 37' 54. 



The curve computed from this formula apparently makes the epoch of the minimum 

 too early, and does not correspond to the flatness of the real curve in the summer months. 

 I therefore prefer the results given above in the text, as being in closer accordance 

 with the results of observation. 



