59° 



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



59° "58' 



57° 56° 55° 54° 53° 52° 51° 50° 49' 



Figure 15. — Ice conditions, May 1957. Figures indicate day of month ice was sighted or reported 



48° 47° 46° 45° 44° 43° 



