- 51 



Submarine Daylight: 



Phytoplankton: depth (m) of chlorophyll a (mg/m ), 1, 0.26; 50, 0.40; 90, 0.25; 115, 0.72; 130, 0. 18; 140, 0.07. 



9 



Water column chlorophyll a: 49 mg/m . 



Zooplankton: N-C N, o to 248 m, 1814-1847 GCT, 74 ml T, 74 ml S; H at m, 1820-1850 GCT, 79e ml T, 

 79e ml S. 



STATION 59 

 (regular night) 



May 18, 1958; 0600-0848 GCT; 5°34'N, 8128. 5'W; depth, missing; wind, 180°, force 1; temp. , 83.0°F dry, 

 79. 0°F wet; weather, 02; clouds, 6, amt. , 8; sea, 2; swell, 180°, missing; time zone 6. 



Biological Data 



Zooplankton: N-C N, o to 253 m, 0722-0755 GCT, 171 ml T, 148 ml S; H at m, 0734-0754 GCT, 515e ml T, 

 479e ml S. 



Nekton: o, depth missing, 0615-0717 GCT, 332 ml T. 

 Night- Lifting operations. 



