HEAT LOSS THROUGH 



EVAPORATION (Qe) 



cal /cm^/day 



JULY 

 1961- 1971 MEAN 



180* * 175 * 170* 165 W 160* 155 W 1 50 * 145 W (40 W 135 * i30* 125 W 120 W MS W 



100 



