ABSORPTION OF LIGHT IN GASEOUS MEDIA. 
415 
Table IX. 
■ 
Units. 
0°. 
20°. 
i 
o 
o 
o 
o 
1 1 
1 1 
70°. 
1 
00 
o 
o 
i 
Total Solar Radiation per unit area 
normal to sun’s rays reaching 
earth’s surface. 
Values of 
j“E(o^a 
r S (fA = 3321 (S, A) units = 1-922 
Jo 
calories per sq. cm. per minute. 
(S, A) units 
dX = 'Ip. 
2597-5 
2553-0 
2389-0 
2032-5 
1670-0 
991-0 
Calories 
per square 
centimetre 
per minute. 
1-502 
1-478 
1-382 
1-177 
-967 
■574 
Total Solar Radiation per unit area 
of horizontal plane reaching earth’s 
surface. 
Values of 
eosH E(0dA. 
J ^ 
(S, A) units 
dX = 'Ip. 
2597-5 
2400 
1830 
1016 
571 
172 
Caloi’ies 
per square 
centimetre 
per minute. 
1-502 
1-390 
1-060 
-589 
-331 
•100 
Total Radiation per unit area of hori¬ 
zontal surface from unit solid angle 
of zenith sky. 
Values of 
|^"t(0,0</a. 
(S, A) units 
dX = -Ip. 
47-5 
44-1 
34-9 
24-1 
17-4 
10-6 
Calories 
per square 
centimetre 
per minute. 
-0275 
-0255 
-0202 
-0140 
-0101 
•0062 
Total Sky Radiation per unit area of 
horizontal surface. 
Values of 
Jo f (1 + COS'^ Q Jo 
• 
(S, A) units 
dX = 'Ip. 
199 
197 
184 
161 
130 
86 
Calories 
per square 
centimetre 
per minute. 
-115 
-114 
-1065 
-0931 
-0753 
•0497 
Total Radiation on horizontal surface 
|”{cosCE(0 + H(0}dA. 
Calories 
per square 
centimetre 
per minute 
1-617 
1 - 504 
1-166 
-682 
-406 
•150 
rH(0f/A 
-r~» • Jo 
ItHtlO --• 
cos (E {() dX 
— 
-0778 
-0821 
-1005 
-1588 
-228 
-.506 
j"H(0^^A 
Ratio ^ -• 
— 
-0778 
-0773 
-0766 
-0793 
-0779 
•0865 
rT(o,o^A 
Ratio oj - 
|”E(0dA 
( 1 ) = 27r (1 — cos 16') = 6 • 80 X 10~^ 
— 
124-3 X10-8 
00 
1 
O 
X 
o 
99-4 X10-8 
80-7 X10-8 
70-8 X10-8 
72-7 X10-8 
t 
I 
Total Solar and Shj Badiation Calculated at Sea-Level from Mean Attenuation Coefficients at JVashington. 
