-<^ 



7^ 





i- 



EFFECTIVE BACK 



RADIATION (Q(j) 



cal /cm*/doy 



SEPTEMBER 

 1961- 1971 MEAN 



100 



^-101 



\ 



1^ 



I90«W 175 W 170 W 165 W 160 W 159 W 150 W I4S W 140 W 135 W 130 W 125 W 120 W ItS W 



-100 





./ 



-^ 



t^ 



^^jt-^ 



,£?<^^- 



V-I2E 



^' 



^■ 



-101. 



K 



EFFECTIVE BACK 



RADIATION (Q^) 



cal /cm ^ /day 



OCTOBER 

 1961- 1971 MEAN 



108 -lOi 



■^ 



80° W r75 W 170 W 165 W 160 W 155 W I50 W 145 W 140 W I35 W i30 W 125 W 120 W 115 W 



95 



