Figure 3. Mean monthly rainfall (1940-1970) and mean
monthly pan evaporation (1940-1969) in south Florida at
latitude 250 00' N (redrawn from Kushlan, 1972), and semi-
monthly mean daily solar radiation (1971-1975) in south
Florida at latitude 26 42 N (R. J. Allen, Jr., pers.
comm.).

NOTE: Location of rainfall and pan evaporation data was
Royal Palm Ranger Station in the Everglades. Location of
solar radiation data was the University of Florida
Agricultural Experiment Station, Belle Glade. In the solar
radiation curve, the January values are based on 4 yrs'
date and February and March values are based on 3 yrs'
data. Ly is abbreviation for Langley, which is 1 cal/sq-cm.