NO. II 



ATMOSPHERIC OZONE FOVVI.E 



15 



of Rayleigli. Although both these assumptions may he allowable up 

 to a certain accuracy it seems likely that from either of them a 

 variation dependent upon the atmospheric pressure or water vapor 

 may have been introduced. 



Let us now turn to the results of observations made at Hanjua 

 Hala (altitude 1,770 m.) and Table Mountain (2,300 m.) in the 

 United States of America, Montezuma (2,900 m.) in Chile, and 

 Mt. Brukkaros (1,600 m.) in Africa, embodied in the following 

 table and figures 9, 10, and 11. The table gives only the monthly and 



Fig. II. 



yearly mean^; hence the plotted points, especially in the plots of yearly 

 means, figures 10 and 11, depend upon a considerable number of day's 

 observations but not always every successive day. The Wolfer spot 

 numbers and the magnetic character values here given are computed 

 employing only the days of radiation observations. In my preliminary 

 paper, already referred to, the plots related to daily values, and even 

 with the few values there utilized from the 1926 and 1927 observa- 

 tions at Table Mountain, showed a distinct correlation between the 

 ozone, the spot numbers, the magnetic character and the flocculi for 

 the corresponding days. 



