u 



V 



a 



u 



c 



c 

 o 



o 



> 



1.2 



1.0 



0.8 



0.6. 



0.4 



Y = .0294 X 



Coefficient of Determination 



S^ - 0.716 



yx 



96.69 





• • 



-L 



5 10 15 20 



Vapor Pressure Difference (millibars) 



25 



Figure 4.6 Evaporation in relation to vapor pressure difference between air and water surface at a 

 wind speed of 6 miles per hour (Moore and Runkles, 1968) 



page 4.7 



