162° 



160° 



30' 



28' 



26= 



24° 



22° 



20° 



18° 



158° 



•6 



•5 



•4 



•J 



•2 



156° 



154° 



-< t- I 



' ' ' 



•7 



*8 



>I0 



•25a 



•24 



»I2 



•25 



•23 



• 54a 



• 55a 



• 38 a 



• 54 



•55 



•56 



•15 



tl6 



•17 



•64 



162° 



160° 



158° 



156° 



154° 



28= 



30° 



26' 



24« 



22< 



20' 



18° 



Figure 1. --Plankton- station positions of Hugh M. Snnith cruise 20 (February - April 1953). 



