313 



TABLE II. 

 Standard deviations and correlation coefficients Iceland = 1, Azores = 2. 



These results show, with a certainty iiuu-li greater than can be 

 obtained by graphic repi'esentations tiiat the antagonism between 

 the barometric oscillation.s in the region of tlie Azores and tlie 

 northern parts of the Atlantic Ocean is evident in every month. 

 From the regular course of the values of /■, in the summer months 

 as well as in winter, the conclusion may be drawn that a value 

 of 7^3.5 indicates a reliable result, for, if the four months : May — 

 August were taken together, the same value /• = 0.37 would be 

 obtained, but now with a factor of accuracy twice as great, or </ ^ 7.5. 



In his extensive investigation of correlations between monthly 

 oscillations of atmospheric pressure and temperature at 49 stations 

 in the northern hemisphere during the three winter months of tlie 

 years 1897—1906, Exner >) gives the value r = — 0.479 {q = 5.0) 

 for tlie c.c. between Stykkisholm and Punta Delgada which cor- 

 respond well with the data of table II, and the fact that, by using a 

 number of observations four times as great, a greater value is found 

 may be considered as proof of the reliability of the results obtained. 



4. For an investigation of the relation between oscillations of 

 atmospheric pressure at different places, the "Dekadenbericht" edited 



1) F. M. Exner, Ueber monatlichc Witterungsanomalien auf der nördlichen 

 Erdhülfte im Winter. Sitz. Ber. Akad. d. W. Wien 122, 1913 (1105—1240). 



