464 



Eighth Annual Report of the 



TABLE 12. 



Differences Between the Mean Temperatures of Consecutive 

 Days for an Average Winter Month. 



station and section of state. 



Canton (St, Lawrence Valley) 



Hess Roads (Great Lakes) 



Honeymefld Brook (Lower Hudson Valley) 

 Setauket (Long Island) 



Degrees Difference Between Consecctivk 

 Days. 



Degrees. 

 5-10 



Degrees. 

 10-15 



Degrees. 

 15-20 



Degrees. 

 20-25 



Degrees. 

 Over 25 



Number of times of occurrence per month. 



2.5 

 

 

 0.2 



These values are derived from a total of nine winter months 

 observations at each station. A longer series might be expected 

 to modify the averages somewhat, while changing the relative 

 values but little. The mean values were, in each case, computed 

 from tri-daily observations. 



The most oibvious feature shown here is the excesis of large 

 ranges in the St. Lawrence valley as compared with the 

 remainder of the State, The tempering effect of the Great Lakes 

 is lacking in that region; and moreover, there appears to be a 

 general increase of variaibility in the direction of the Eastern 

 Canadian Provinces. 



A graphic representation of the varia'bilit}^ of temperature in 

 New York will be found in plate 1. 



