Dep I oymen t #=4 



O 



31 • 

 30- 

 29- 

 28- 

 27- 

 26- 

 en 25- 



CD 



24- 



S^23- 

 -a 



^22- 



CD 



B 21- 

 E 20- 



(U 



E 



^ 18- 



1 IB- 

 IS' 

 14 

 13 

 12- 

 11- 



12 18 24 30 36 42 48 

 Time from start (hours) 



Fig. 6, continued 



338 



