I^PY The (our dig. t numbefs in the column on ihe let) g.ve ihe latitude and longitude of the 

 ■* ^ ' ioutheost corner of each one degree-quodrongle Eoch one-degree quadrangle is divided 



into 30-minute quodranglet, numbe 

 give: A- minimum temperature, B- 



ed as in the diagram lo the right. The columns of these tables 

 iQNtmum temperature, C - number of yeors, D - number of days 



DEPTH ZONE 



54 



