H. MOHN. METEOROLOGY. [2nd ARC. EXP. fkam 



AMOUNT OF CLOUD. DAILY PERIOD. 



The following Table gives the monthly means of the amount of 

 cloud at the bi-hourly observations at the winter quarters, the (weighted) 

 means for the months, the number of observation-days, and the (weighted) 

 means of all observations in the various years, for each alternate even 

 hour. 



January. 



February. 



March. 



April. 



May. 



