52 



STATION 60 

 (regular forenoon) 



May 18, 1958; 1658 GCT; 5°31'N, 79°54. 5'W; 1640 fm; wind, 190°, force 3; temp. , 79. 9°F dry, 77. 1°F wet; 

 weather, cloudy; sea, moderate; wire angle, 25°; time zone 6. 



Submarine Daylight: 



Phytoplankton; depth (m) of chlorophyll a (mg/m ), 1, 0.45; 10, 0.86; 25, 0.53; 50, 0.34; 90, 0.14; 140, 0.066. 



Water column chlorophyll a: 46 mg/m . 



Phytoplankton haul taken. 



Zooplankton: N-C N, o to 297 m, 1810-1843 GCT; 505 ml T, 113 ml S; H at m, 1820-1850 GCT, 320e ml T, 

 320e ml S, 



STATION 61 

 (regular night) 



May 19, 1958; 0600-0855 GCT; 5°29. 5'N, 77 °57'W; 2000 fm; wind, calm; temp. , 81.5°Fdry, 77. 6°F wet; weather, 

 02; clouds, 6, amt., 3; sea, 2; swell, 230°, missing; time zone 6. 



a) Duplicate values: m, 0.49; 4 m, 0.38; 48 m, 1.86; 137 m, 1.G3; 264 m, 2.29 m8 at/L. 



