Table I. (a) (3).—Fourier Coefficients of the Solar Diurnal Magnetic Variation at the Equi 
(a) Sunspot Maximum. 1905. 
(3) The 8-hour Component. 
78 DR. S. CHAPMAN ON THE SOLAR AND LUNAR 
Radial. 
co 
r-O 
Autumn. 
r-H CO CD 
CM 
1 
r-H r-H r-H 
1 1 
to co 
1 1 
SO r-H 
i—H r—H 
1 l 
(M D- 
r-H r-H 
1 1 
CO CO 
D- i—i 
1 1 
r-H 
r—H 
i 
00 00 
1 
Spring. 
CM hH tO 
r-H 
1 
r-H OS r-H 
1 
o o 
CM SO 
1 1 
CM GO 
t—H 
O iO 
CO 
1 1 
o 
OS hH 
co 
; 
Autumn. 
rH N CO 
r-H i—H 
1 
N COl> 
(M T-H (M 
O CM 
CO CO 
*“H CM 
CO CM 
hH SO 
CM CO 
i>- h 
CM rH 
1 
so 
(M 
1 
X>> r-H 
<M CM 
1 
Spring. 
O 1> »—i 
HH(M 
SO D- CO 
CM r-H (M 
SO hH 
CO co 
SO GO 
CM h 
D- 
CO CM 
tO hH 
co 
1 
-38 
00 to 
co CM 
1 
-H» 
hi 
o 
SZJ 
CO 
Autumn. 
GO tO r— 1 
CO CM hH 
0^0 
hH hH <M 
CM OS 
hH SO 
1— D- 
to SO 
SO to 
■-rH r-H 
CM CO 
CO 
1 1 
CO IO 
CM CM 
1 1 
O hH 
CM 
1 
20 
Spring. 
CM (M 
CM O tO 
CM CO r-H 
CM hH 
r "H CM 
O to 
co cm 
i—H tO 
CM r-H 
-37 
4 
hH r-H 
<M 
1 l 
to os . 
r—H 
1 
GO 
r-H 
CO 
e 
Autumn. 
CO o o 
r-H i—H r-H 
1 1 1 
GO (M GO 
CM 
J 1 1 
CM SO 
r-H 
OS CM 
r—H r-H 
1 
CM 
t— t CM 
(M OS 
CO rH 
CO o 
CO r- 1 
tO CM 
CO 
-38 
Spring. 
lO H 
CO M CO 
I I 1 
CO to 00 
CO hH CM 
1 1 1 
O 
r-H 
l 1 
OS CM 
CM CO 
1 1 
OS tO 
r-H 
1 
i—1 CM 
CO 
o t- 
hH r—H 
hH O 
CM CO 
-50 
West. 
CO 
rQ> 
Autumn. 
(N CO H 
CO CO 
GO r-H hH 
CO ^ CO 
CM so 
hH CO 
CM 
r-H CO 
GO CM 
CO r-H 
i>- hH 
r—H r—H 
1 
CM T— 
tO i—• 
1 
CM OS 
GO U— 
1 1 
-53 
Spring. 
O to 
H lO 
so to os- 
tOi> ^ 
D- O 
SO X>- 
CO r-H 
hH to 
CM tO 
GO tO 
hH GO 
CO hH 
CO rH 
CO hH 
1 1 
hH O 
U- 00 
1 1 
-50 
CO 
S3 
Autumn. 
O CO 
CO to CO 
OS GO GO 
rH CO ^ 
co so 
to 
CM rH 
SO D- 
O CM 
OS GO 
hH tO 
os to 
00 hH 
r-H CM 
1 
CO »“H 
r-H 
1 1 
os 1 
2 
i 
Spring. 
O O OS 
CM I-H r-H 
OS D— r-H 
CO CO 
OS to 
CO hH 
GO tO 
CM CM 
SO hH 
CM CM 
GO GO 
hH CM 
1 
to CM 
<M CO 
1 1 
CM 00 
so co 
1 1 
Observatory 
No. 
H ci CO 
hH to so 
D- 00 
O 
r—H 
r-H CM 
r-H i—I 
CO hH to 
r—H t—H t—H 
SO D- 
r—H r-H 
00 OS o 
r-H r-H (M 
hH 
hH 
hH 
> 
r-H 
CM | 
X! 
hH 1 
Group No. 
hH 
hH 
hH 
hH 
hH 
hH 
!> 
hH 
V. 
hH 
> 
TIA 
