















At = 1 1° F 

















































































































































































































h 

 (FEET) 

































190 

 180 









h. 



lc orwe_rg 













^- 











170 

 160 



- 



/ 

 / 













^^ 

















140 

 130 





/ 



1 







t\ ^ 



f\ 



s yy r 



















120 



no 



100 

 90 

 80 



" 



I 

 1 





•" 

























: I 



/ 

 / 



f 







S^ 



h (d 



vergence 



) 















70 

 60 



- 



1 . 

 // 



/ , 

 ' ^ 







jn^ 



jer^!^" 



















40 

 30 





Y 1 





























20 

 10 



1 



1 A 





























FIGURE 19 PARAMETERS i, AND h VERSUS k FOR STABILITY INDEX At = 10° TO 12° F 



39 



