( 368 ) 



TABLE II. Frequencies of the mean daily cloudiness, Batavia, 1880—1905. 



this may be done by simply assuming the denotation as given in the 

 last column of Table II. 



In the second place the frequencies corresponding to the extreme 

 limits must be excluded from the calculation because they must be 

 considered as representing peculiar meteorological conditions and 

 also because they cannot be taken as representing average values 

 between +1.05 and +0.95 in the same sense as any other group. 



Therefore, in calculating the constants of frequency-formulae, these 

 extreme values are omitted and the remaining frequencies again 

 reduced to a total of 1000. 



