23 



MAY WEATHER 



Maxiiiiiiin air temperature, 58° F. 



Minimum air temperature, 36° F. 



Average air temperature, 44.4° F. 



Visibility was less than 4 miles 37.2 per cent of the time. 



Visibility was less than 2 miles 32.9 per cent of the time. 



The visibility during May, contrary to expectation, was better than 

 in April. This was due in part to the fact that the ice-patrol vessels 

 were further south during May than in April. However, from May 

 13 to 19, inclusive, a fog continuously enveloped the regions from the 

 taU of the Banks southward to the westbound steamer lane (track B), 

 then in use. Two bergs were known to be south of the tail during 

 this time. Luckily they took the westward path around the southern 

 slope of the Banks and did not cross the steamer lanes. 



MAY WEATHER DIAGRAM 

 Figure 10.— For explanation of symbols, see Figure 8 



