WHOLE VOL. 



LAT. 20 N. 



571 



SEA-LEVEL PRESSURE AT 10" INTERSECTIONS 



Lat. 20° N. Long. 30° W. 



950 mb. + 



Mean 68.3 67.5 66.7 66.1 66.6 67.0 65.6 64.5 65.0 65.8 66.2 67.6 



66.4 



Mean 66.9 65.6 64.3 62.7 62.6 62.7 61.9 61.4 62.5 63.0 64.7 66.0 



63.7 



