10c DYNAMIC METEOROLOGY AND HYDROGRAPHY. 



Table 9 A. Air-temperatures reduced from Fahrenheit to centigrade. 



Proportionality Table. 



Example .' 



Temperature +42. 6 F. Table 9A gives +42.0 F. = +5. 6 



Proportionality table gives for + 0.6 F . = +0.3 



+42.6 F. = +5-9 



C. 



c. 

 c. 



Proportionality Table. 



Example : 



Temperature +54.31 F. Table 10 a gives... -+-54.00 F. 

 Proportionality table gives for + 0.31 F . 



54-3' F- 



12.22 

 0.17' 



C. 

 C. 



39 C. 



