KPY The (our-digit numbe'i m the column on th« left g.ve the lotitude ond long. lode of the 

 ^ ' loulheait corner of each one degree quodrongle . Eoch one-degree quodrongle it divided 

 into 30-m(nute quodronglei, numbered oj in the dtagram to the right The columni of Iheie toblei 

 give: A - minimum temperature, B ■ ma«imum lemperoture, C ■ number of yeori. D - number of day* 



39 



