24 



STATION 4 (cont. ) 



Submarine Daylight: 



Incident solar radiation: daily T 571 gm-cal/cm , day L 13.05 hr. 



Biological Data 



Phytoplankton: depth (ra) of chlorophyll a (mg/m^, 1, 0. 096; 12, 0. 026; 26, 0. 044; 39, 0. 059; 66, 0. 061; 106, 0. 38. 



Water column chlorophyll a: 12 mg/m^. Phytoplankton haul taken. 



Zooplankton; N-C N, o to 343 m, 1613-1639 OCT, 10 ml T, 10 ml S; o to 308 m, 1718-1757 GCT, 23 ml T, 23 ml S; 

 H at m, 1645-1702 GCT, 21 ml T, 21 ml S. 

 C N, H at 77 m, 1845-1901 GCT, 24 ml T, 24 ml S; H at 175 m, 2102-2027 GCT, 11 ml T, 11 ml S. 



STATION 5 

 (regular night) 



April 27, 1958; 0800-1118 GCT; 21°59'N, 118°21'W; 2208 fm; wind, 020°, force 3; temp. , 66.2°Fdry, 61.6°Fwet; 

 weather, 02; clouds, missing; sea, 2; swell, 020°, missing; time zone 8. 



a) Duplicate values: 69 m, 0. 90; 121 m, (0. 06); 147 m, 1. 88; 174 m. 2. 03; 263 m, 2. 73; 358 m, 3. 43; 484 m, 

 3. 52; 1077 m, 3. 79 ^g at/L. 



