PARAMETERS DERIVED FROM THE A^-PROFILE 



237 



E 



.3^ 



Figure 6.7. Geometry of the equivalent gradient. 



60 . 1 370 



50 



g 40 



30 





AN 



ge 



350 



330 



J A S N D J F M A M J 

 MONTH (JULY-JUNE) 



Figure 6.8. Comparison of monthly medians of ge, AN, and Na 

 (Leopoldville, Congo) 



310 



