FIGURE P 



23.8 

 27.2 

 30.6 

 34.0 

 374 

 40.8 

 44.2 

 476 

 51.0 

 544 

 57.8 

 Z6I.2 

 646 

 68.0 

 71.4 

 748 

 78.2 

 81 6 

 850 

 88.4 

 91.8 

 952 

 986 



GUAPH 



8 



a 



\ 



\ 



\ 



\ 



