1 
Apart from these means (in general 12 hourly-values) 
the mean value and the standard deviation from all 
measurements taken at a permanent station have been 
determined (last profile of Figs 15 and 19). Dates 
and averaging intervals are shown with each profile, 
Besides temperature and salinity the oxygen content is 
an additional suitable indicator in distinguishing 
the three mentioned water masses (Figs 16, 20). Con- 
cluding, the following table gives a rough classifi- 
cation of these water masses according to the obser- 
vations at the permanent stations: 
T°C s °/oo 02 ml1/L 
1.0 = 2,0 34,5 = 34.8 7.4 - 8,0 
35.1 —- 35.3 6,2 - 6.5 
Shelf water 
North Atlantic 
water 
7.0 = 8,5 
Overflow water 2,53 
- 4.0 
34,9 = 
35,0 64 "> 
649