Figure 18. — Weather diagram, southern oceanographic cruise 



JUNE 19-29, 1931 



Maximum air temperature, 56° F. 



Minimum air temperature, 40° F. 



Mean air temperature, 47.8° F. 



Visibility was less than 4 sea miles, 32 per cent of the time. 



Visibility was less than 2 sea miles, 20 per cent of the time. 



Figure 18 shows the meteorological graph. 



Figure 26 shows the track of the vessel. 



