66 



SUMMARIES OF THE 



* This column gives the difference between the highest and lowest observation at sunrise in each year. The range at 

 sunrise, for the whole period of twenty years, was 86°. 



t Interpolation; mean of 19 years. 



} This column gives the difference between the highest and lowest observation at 2 or 3 P. M. in each year. The range 

 at 2 or 3 P. M., for the whole period of twenty years, was 90". 



I 



