FOR THE YEAR 1870. 



CXI 



BELATIVE HUMIDITY. 



Mean humidity of the year 



Month of greatest humidity 



Greatest mean monthly humidity 



Month of least humidity 



Least mean monthly humidity 



76 



Jan. Deo. 



82 



May. 



Average 



of 

 28 years. 



77 



January 



83 



May 



71 



Extremes. 



82 in 1851 

 Jan. 1867. 



Feh. 1843. 



58 



73 in 1S58 

 Dec. 1858, 



81 

 Apr. 1849. 



76 



EXTENT OP SKY CLOUDED. 



Mean cloudiness of the year 



Most cloudy month 



Greatest monthly mean of cloudiness 



L-ast cloudy month 



Lowest monthly mean of cloudiness .. 



1870. 



0-62 

 Decern. 



0-78 

 August 



0-48 



of 

 17 years. 



0-60 

 Novem. 



75 

 August 



0-48 



Extremes. 



0-66 in 't 

 0-83 

 d'29 



0-57 in '56 

 0-73 

 0-50 



Resultant direction 



Kesultant velocity in miles 



Mean velocity, without regard to direction 



Month of greatest mean velocity 



Greatest monthly mean velocity 



Month of least mean velocity 



Least monthly mean velocity 



Day of greatest mean velocity 



Greatest daily mean velocity 



Day of least mean velocity 



Least daily mean velocity 



Hour of greatest absolute velocity | 



Grsatest velocity 



1870. 



N. 450 W. 



1-61 



7-33 



Decern. 



11-46 



July 



4' 82 



Eeb. 12 



20-92 



June 2 



0-00 



Oct.XS,5-30 



to 6-30 a.m. 



35-3 



Result 



of 

 22 years. 



N. 61° W. 

 1-90 

 6-94 

 Maich 

 8-77 

 July 

 4-96 



2.323 



39-4 



Extremes. 



