1/ P W The four-digi* numbei 



'^ ^ ■ loutheott corner of «och one degree-quodrongle. Each one-degree quodrongle is d 



into 30>minute quodronglet, i 

 give: A' minimum temperotu' 



n ihe column on the left give the lolilude and longitude of the 



■ ■ ' ded 



ibered as m Ihe diogrom to the right. The columns of these tables 

 temperature, C- number of yeors, D - number of doys. 



DEPTH ZONE 



30 



