1^ C Y ^^" four-digit numbers in the column on the left give the latitude ond longitu< 

 ■^ * ' southeast corner of eoch one degree-quodrangle Eoch one-drgree quadrangle 

 into 30-minute quadrangles, numbered at in the dicgrom to the right. The columns of 

 give! A - minimum temperolure, B- mom mum temperdture, C ■ numbtr of yoors, D - numbei 



de of the 

 • t divided 



h«se tables 

 ol days. 



DEPTH ZONE 



22 



