Physics 55 



3 



O 

 w 



e 

 a. 



E 



14 

 12- 



10- 

 8- 

 6 

 4- 

 2 

 



FIGURE 3-3. Daily 

 average water tempera- 

 tures for (a) Pond C, 

 1971; (b) Pond B, 1972; 

 and (c) Pond C, 1973. 

 In all these figures the 

 solid line is the three- 

 year daily mean. 



