Table 3. — Temperatures C" of Lake Michigan off Grand Haven and Muskegon, Michigan, 1930 

 and 1931. Station (Sta.) numbers under 100 were occupied in 1930; those between 

 100 and 200 were occupied in 1931. Depths (D) are recorded in meters. Locations 

 of the stations are shown in table 1 and on the map. Thermoclines are indicated 

 between two horizontal lines. 



[C = cruise; D = maximum depths; S = surface] 



