104 



THE ROYAL SOCIETY OF CANADA 



Table II. 

 Agincourt and Meanook Declination Ranges in the Year 1917 



Month 

 1917 



January. . . 

 February. . 



March 



April 



May 



June 



July 



August. . . , 

 September 

 October. . . 

 November 

 December. 



Monthly 



Ag 



1 23-5 

 490 

 49-4 

 54-9 



57-0 



1 06-5 



470 

 3 22-5 



1 010 

 1 32-0 



44-8 



1 31-7 



Range 



Me 



47-3 

 54-3 



1 43-9 



Diurnal Range 



Means of Extreme 

 Daily values 



Ag 



Me 



37-9 

 30-8 

 30-8 

 42-9 

 43-4 

 35-8 

 46-2 

 78-6 

 39-0 

 56-3 

 28-9 

 22-6 



Mean from 

 Hourly ordinates 



Ag 



91 



9-8 



14-1 



13-0 



14-1 



15-8 



14-5 



17-1 



14-9 



10-6 



8-8 



7-2 



Me 



Table III. 



Diurnal Variation of Magnetic Declination at Agincourt for each Month 



During the Year 1917. 



