IOi- 



£ -5 



A! 



o 



E 



.^ 10 



-0.7 —ft Contour 





Reflection Coefficient 



50 100 150 



Cumulative Time ( hr) 



200 



0.20 



0.15 



0.10 I 



0.05 



J 



250 



Figure 4. Reflection variability and movement of the -0. 7-foot contour 

 in experiment 70X-10. 



25 



