HOKKAIDO oi-^*<^AKAU 



LAKE //^AWASH//W 

 J 



HONSHU 



v^ 



oM/YAHE I5LA/V0 



Fig. 2. — Showing the locaUties of observations 



^ 2,0 



- /.(? 



v^ 05 



oz 



0.1 



orAKtKOUTI 



• USTfR g Ci-ARhE: 



5UTr£J«ACKiJ0«CL>J^EN 



03 



01 



■^ 



/O 



)IPrtiCa!ctti„(f,ffn COtffulent for jreen ln^ht vert.cil e^tmciton COttftcient for ^r^fn (,<;hC 



Fig. 3. — Showing the relations between the vertical extinction coefficients for 



different colour of liaiht 



300 



