STATION DATA 



EXPLANATION OF COLUMN HEADINGS 



Date 



Time 



Depth 



C 

 M 

 OC 

 Sal 



Ca 



Alk 



Si 



NO3-NO2-N 



PO4 



In. 



Tot. 

 Light Transm. 



Month, day, and year are given 



Eastern standard time 



Depth Is coded as indicated below: 



For stations lA through 2 IB: 



Code 



S Surface 

 M Middepth 

 B Bottonn 



For stations from 21 through 27B: 



1. Surface 



2. First intermediate 



3. Second intermediate 



4. Bottom 



Concentrated sample 



Mixed sample 



Water temperature recorded to the nearest 10th of a degree centigrade 



Salinity, parts per thousand '00 



Calcium, mg.at./l. 



Total alkalinity, expressed in mg.at. H+ per liter 

 Silicon, ^g.at./l. 

 Nitrogen,yug.at. NO3-NO2-N/I. 

 Phosphate 



Inorganic phosphate, //g.at.P04-P/l. 

 Total phosphate,/^g.at.P04-P/l. 



Light transmission expressed in percent, to the nearest tenth 



7 



