59 
Cs-137 
1999-2002 
Figure 3: 
Cs-137 results with 2 sigma 
uncertainties in seawater 
intercomparisons, 1999-2002 
140 
120 
Denmark Estonia Finland Germany Latvia Poland Russia 
country 
I 1 1999 
^M2000 
I 1 2001 
I 1 2002 
arithmetic mean 
95% confidence 
intervals 
Sr-90 
1999-2000 
Figure 4: 
90 Sr results with 
uncertainties in 
intercompariso 
2 sigma 
seawater 
ns, 1999-2000 
25 
20 
•T 15 
a 1 
m 
o 
5 
w 10 
11999 
12000 
arithmetic mean 
95% confidence 
intervals 
Denmark 
Finland 
Germany 
country 
Latvia 
Russia 
Baltic Sea Environment Proceedings No. 117