30°PM|i|Mi|i|iMMM|M',l'IM 



n M I ! M M I M M I ' I M M ' m 30° 



Figure 24. Nitrate-nitrogen (/ig-at/liter) at 100 meters Feb-Mar 1967 for the 

 eastern tropical Pacific. (Reproduced from EASTROPAC Atlas, Vol. 2, Ref. 22) 



57 



