KIMBALL: NORMAL ATMOSPHERIC TRANSPARENCY 



21 



latter is indicated by the smallness of the ratios for early morning 

 or late afternoon hours for the first period in Table 2. With low 



TABLE 3 

 Monthly Summary of Skylight Polorization in the Sun's Vertical and at 

 Solar Distance 90°, With the Sun at Zenith Distance 60°. Mount 

 Weather, Va. 



