59° 58° 57° 56° 55° 54' 



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



Figure 9 — Ice conditions, April 1953. Figures indicate day of month ice was sighted or reported. 



303589 O - 55 ( Face p. 14) No. 3 



