5o8 



SMITHSONIAN ^^ISCELLANEOUS COLLECTIONS 



VOL. 105 



SEA-LEVEL riiluSSUHl'; A'i' 10" JNTERSECTIONS 



Lat. 70° N. Long. 120° W. 



950 mb. + 



Mean 69.2 69.8 73.0 70.1 68.4 64.9 61.3 61.4 63.5 63.2 67.5 66.9 



66.6 



Mean 67.4 68.3 72.3 71.1 69.7 65.2 61.1 60.5 63.8 63.4 66.3 66.1 



66.3 



Mean 64.6 66.1 70.4 70.8 70.0 64.9 60.9 60.0 63.3 62.7 64.3 64.4 



65.2 



