Table III. (f3) ( b ).—Fourier Coefficients (Group Means) of the Solar Diurnal Magnetic Variatio 
Sunspot Minimum, 1902. 
(/3) The Mean Solstitial Component, j? (Summer + Winter). 
90 DR. S. CHAPMAN ON THE SOLAR AND LUNAR 
Radial. 
- 
Calculated. 
cn o © o as <d 
rH i-H r—. 
1 1 1 1 1 ! 
41 O 
r-H 
(2) The 12-hour Component. 
41 CC CC CC CC 41 
1 1 1 1 1 1 
rH CC 
Observed. 
vo co r —* -4 
r-H r—H ^H 
lit! 1 
vo CO 
1 
OhhiOC14 
r-H r-H 
III 1 
-4 -4 
1 1 
© 
-t-3 
3 
o 
^c3 
O 
O 4 CD iO O lO 
-f -t -4 -4 -4 41 
o o 
—< -r 
1 1 
O lO O 41 41 41 
41 41 CC 1 CC CC 41 
05 r-H 
cc 
1 1 
<D 
> 
&H 
© 
CO 
ro 
o 
VO -4 00 VO »—« 41 
rH CO !M 4 1 © 
vo o 
iO !>• 
1 1 
O 4 i> 41 «o © 
r-H 41 41 CC 41 CC 
CD 05 
CO 
1 
North. 
Calculated. 
+5 
(H h i — i 4 lO 
till 
VO O 
VO r-H 
1 1 
O cc cc CO CO rH 
41 41 r- r-H CC 
1 1 
rH O 
-4 rH 
| 
Observed. 
£ 
o 
p« 
a 
o 
o 
4 4 W X 1 I- 41 
41 f-H 41 41 CO 
1 1 
— o 
>o rH 
1 
4NONOCC 
41 r—l rH CC CC 41 
1 
O -H 
CO 
1 1 
Calculated. 
►H 
£ 
O 
4 
(M 
H ^ o H CD X 
-4 41 41 1C 
I 1 
41 -4* 
05 r-H 
fi t- o oi io a 
-H CO 05 05 -r 
1 I 1 1 
CO CO 
VO r-H 
1 
Observed. 
0 
c* 
r-H 
05 O CO O GO H 
4 VO r-H lO CO 4 
till 
lO cc 
41 r-H 
r-H 
1 
O O H O O O 
co -th co 
1 1 1 1 
VO 41 
lO 
1 
West. 
Calculated. 
05 -4 ~4 05 r-H t-— 
N N O O 4 Ol 
o »—‘ 
r-H CO 
1 1 
Cl N 4 N 4 X 
© © © © iO co 
-4 L- 
rH CO 
1 1 
Observed. 
-4 1' - 4 CO 41 41 
N O O 0 CO 41 
-4 F—H 
»0 05 
1 1 
© 4 CO © N O 
O lO © 1> 4 Ol 
- 62 
- 100 
d 
© 
-h» 
© 
o 
CD W O (N Ol a 
lO lO 4 4 41 M 
JD- CC 
-4 
1 1 
05 41 CC 41 CC 4 
CC 4 4 4 CC 41 
05 41 
-4 
1 1 
Observed. 
W D N 4 O O 
lO -4 lO ^4 41 41 
»o VO 
41 
1 
O GO kO r-H 05 © 
4 CO 4 © 41 CC 
o oc 
rH 
1 
p 
%o. 
. 
HH HH HH K-C kC HH 
HH* HH 
r— H^ 
HH HH 
HH HH 
:5 s5 
H-* ^ 
> ^ 
hH 
