BACKGROUND 



181 



SAN JUAN, W.I. 

 (July Average) 



310 320 330 340 350 360 370 380 390 



A(h,3l3), N UNITS 



I I I I i \ I \ I 



-8 -7 -6 -5 -4 -3 -2 -l 



T313-T (mrad) 



Figure 5.5. Departures of t and N from normal for maritime tropical air. 



