CLIMATOLOGICAL AVERAGES VON BEZOLD 



423 



Table II. Holospherical averages 



In fact one can with surprising accuracy compute the average 

 temperature t for any latitude circle from the number D of any 

 thermal days corresponding to that circle by the formula 



t = — -42.5 

 5.2 



The following table 111 shows how far this approximation holds 

 good, as it gives not only the computed values of t but also under S 

 those given by Spitaler and under B those given by Batchelder, 

 united into their respective holospheric averages. The adjoining 

 columns give the differences between these averages and the com- 

 puted t. 



Table III. Comparison of holospheric values deduced front observations and 

 those computed by the formula 



