!• C Y The four-diQil numbef» m the column on the le(t give the latitude and longitude of the 

 "^ ■• ■ loutheoit corner of each one degree-quodrongle. £och one-degree quodrangle is divided 

 into 30-minute quodronglet, numbered ai m the d'ogrom to the right The columns of these toblei 

 giwei A - minimum temperoture, B- mammum temperature, C ■ number of years, - number of doys. 



36 



