KPY Th« fowrdiQil nuoiberj in the coi\ji 

 ^ • joulheail cornef of each one deoree-quadrangle Eoth one-degree quodrongle is divided 



ngte quadrangles, nut 

 minimum lemperolure, 



lude ond longitude of 

 (gree quadrangle is divi 

 bered as m the diagrom to the right The columns o( these tables 



mperoture, C - 



T^bef o( years, ■ number of doys 



41 



