59° 58° 57" 56° 55° 54° 53° 52° 51° 50" 49° 48" 47° 46° 45° ' 44° 43" 



56° 55° 54° 53° 52° 51° 50° 49° 48° 47° 46° 



Figure 10. — Ice conditions, March 1959. Figures indicate day of month ice was sighted or reported. 



