WEATHER GOVERNED BY THE SUN — ABBOT 113 



JAN. MAY SEPT. JAN. MAY JAN. MAY SEPT. JAN. MAY 



-2° 



-2" 



-2' 



FiGDRB 18. — Sample forecasts and verifications. Dotted curves are forecasts. Grades 

 of results : A, excellent ; B, fair ; C, half and balf ; D, bad. Left, temperature ; 

 right, precipitation. 



