1.2 



1.0 



«B 



u 

 u 



o. 



tfl 

 « 



u 



e 



§ 0.6 



O 



> 



0.4 



0.2- 



Y = .0180 X 



Coefficient of Determination = 93.24 



S^ = 0.3^3 

 yx 



• • 



• • 



5 10 15 20 



Vapor Pressure Difference (millibars) 



25 



Figure 4JJ Evaporation in relation to vapor pressure difTerences between air and water surface at a 

 wind speed of 2 miles per hour (Moore and Runkles, 1968) 



page 4.6 



