APPENDIX C 



LXXIII 



Summary of Results of Magnetic Observations Made at 

 Meanook During the Fiscal Year 1920-21 



Month 



Mean Monthly Values 



D East 



H 



1920 



April 



May 



June 



July 



August 



September 



October 



November 



December 



1921 



January 



February 



March 



27 



38.0 

 39.0 

 38.0 



38. 

 38. 

 38. 

 38. 

 37. 



37.0 



37.0 

 36.5 

 36.2 



T 

 12908 

 08 

 40 

 15 

 11 

 20 

 26 

 26 

 28 



34 

 20 

 16 



7 

 60228 

 142 

 266 



141 

 182 



258 

 260 



277 

 218 



246 

 198 

 197 



77 



54.2 

 53.2 

 52.9 

 52.8 

 53.5 

 53.9 

 53.6 

 53.8 

 53.0 



53.0 

 53.2 

 53.4 



Meanook Daily and Monthly Ranges of D 



Month 



1920 



April 



May 



June 



July 



August 



September 



October 



November 



December 



1921 



January 



February ; 



March 



From hourly 

 readings 



17.8 

 16.2 

 17.1 

 17.3 

 17.6 

 12.6 

 11.3 

 8.8 

 10.4 



6.8 

 6.6 

 9.1 



From Max. 

 and Min. 



50.9 

 44.1 

 28.8 

 30.6 

 38.9 

 60.0 

 43.0 

 30.5 

 32.4 



23.1 

 22.3 

 34.4 



Absolute 



Monthly 



range 



49.9 

 58.3 

 56.5 

 19.3 

 52.6 

 57.4 

 12.3 

 05.0 

 17.1 



57.6 



1 35.4 



2 07.8 



