36 



H. MOHN. 



M.-N. Kl. 



Precipitation. 

 Number of Days with Fog ami Snow. 



Apr. May June July Aug. Sept. Oct. Nov. Dec. Jan. Total 

 Fog 6 — — — 3104- II 25 



Snow 8 I 533 5 1° 8 115 59 



On an average, on every 5*'^ day there is snow. Rain was never 

 observed. 



Fog Wind-Roses. Number of cases. 



No Fog in the NW quadrant. Maximum with east wind. Dividing the 

 numbers of frequency with the number of cases in which each wind has 

 been observed, we get the Probability of Fog for each wind. This is 

 greatest with NE and none with wind from the NW quadrant. 



Snow Wind-Roses. Number of cases. 



Snow is most frequent with E, least frequent with NW wind. 



The period of probability is very regular. Maximum with N, Minimum 

 with SW. Calms show the greatest probability for snow. Next come the 

 winds from N and NW. 



