Fig. 3.

Seasonal food price as a function of month since the beginning of harvest for 160 markets in sub-Saharan Africa. Shown are averages across crops for the four crops considered. The prices are expressed as the median monthly price divided by the annual price. The two regression lines show (1) price decrease after harvest (slope = −0.04) followed by (2) increases until the next harvest (slope = 0.02). The gray envelope represents 70% of the observations.