-0.6-ft Contour 



100 150 200 250 300 

 Cumulative Time(hr) 



350 400 



Figure 44. Comparison of the -0.6-foot contour 



movements in experiments 70X-06, 71Y-06, 

 and 72D-06 (L/W = 2.38). Compare with 

 Figure 41. 



91 



