8. Barometer. The barometric pressure 

 is coded in millibars, neglecting the 

 900 or 1000 . Thus 996 millibars is 

 coded as 96 and 1008 millibars is coded 

 as 08. 



9 . Air Temprature. Dry bulb and wet 

 bulb temperatures are entered to the 

 nearest tenth of a degree (centigrade) . 



10. Humidity. The percent of humidity is 

 coded directly. 



4. Sigma -t. To convert to density divide 

 by 1000 and add 1 . Thus, a sigma-t 

 value of 22.35 converts to a density of 

 1.02235. 



5. Dissolved Oxygen. These values are 

 given in milliliters per-liter to two 

 decimal places. 



6. Total Phosphorous. Values are given 

 in microgram atoms per liter to the 

 nearest 0.1 of a unit. 



11. Weather . Weather is coded as indicated 

 in Table 2, "Numerical Weather Codes - 

 Present Weather . ' 



Inorganic Phosphate. Values are given 

 in microgram atoms per liter to the 

 nearest 0.1 of a unit . 



12 . Clouds . Cloud type and amount are 

 coded as indicated in Table 3, "Cloud 

 Type"; and Table 4, "Cloud Amount" 



8 . Nitrate -nitrite. These values are given 

 in microgram atoms per liter to the 

 nearest 0.5 of a unit. 



13. Sea. Sea direction and amount are 

 coded as indicated in Table 5, "Sea 

 Amount"; and Table 1. 



14. Swell . Swell directions and amount are 

 coded as indicated in Table 6, "Swell 

 Amount"; and Table 1. 



15. Visibility. Visibility is coded as in- 

 dicated in Table 7, "Visibility." 



16. Water Transparency. Given as meters 

 to which a Secchi disc is visible. 



Subsurface Observations 



1 . Sample Depth . Observed (actual) depth 

 of each sample is given in meters. In- 

 terpolated values at standard depths are 

 also given. The standard depths in 

 meters are: 0, 10, 20, 30, 50, 75, 100, 

 150, 200, 250, 300, 400, 500, 600, 700, 

 800, 1000, 1200, 1500, 2000, 2500, 

 3000, and thence every 1000 meters. 



2. Temperature . The centigrade tempera- 

 ture is given in degrees and hundredths. 



3 . Salinity. Salinity is given in parts per 

 thousand to two decimal places. 



9. Carbohydrates (Arabinose) . These 



values are given in terms of milligrams 

 per liter to the nearest 0.1 of a unit. 

 Collier et al . (1953) presented a tech- 

 nique for estimating certain elements 

 of the organic materials in sea water 

 which react to the test for carbohydrates. 

 The carbohydrate values are given as 

 arabinose equivalents, and are not 

 necessarily the actual concentration of 

 carbohydrate substances. 



10. Proteins (Tyrosine) . These values are 

 given to the nearest 0. 1 of a unit as 

 milligrams per liter of protein material 

 in sea water, which reacts to the test 

 for tyrosine. 



Biological 



1 . PlanKton volumes (half-meter silk net) , 

 Table 8. The position given is that at 

 beginning of the tow . The depth of the 

 haul is given from to the greatest 

 depth reached. The volumes as given 

 are "wet volumes' (procedures for de- 

 termination are given under methods) . 

 Very few samples contained large or- 

 ganisms such as jellyfish (which were 

 removed), so that the volumes represent 



15 



