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10000 

 8000 



6000 

 4000 



2 000 



6 8 10 



40 60 80 100 



800 



10000 

 8000 



6000 



4000 



1000 

 800 



600 



100 

 80 



10 



4 6 8 10 20 40 60 80 100 



ICE THICKNESS - INCHES 

 Figure 3. — Graph for prediction of approximate thicl<ness of ice. 



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