Table III. (y) (a ).—Fourier Coefficients (Group Means) of the Solar Diurnal Magnetic Variation, at 
SuDspot Maximum, 1905. 
(y) The Solstitial Inequality, (Summer -Winter). 
98 DR. S. CHAPMAN ON THE SOLAR AND LUNAR 
Radial. 
*C> 
Calculated. 
£"• 00 lO r-H r-H 
1 
1 
(2) The 12-hour Component. 
mO-NiOOO 
1 1 1 1 
O CO 
r-H 
1 1 
Observed. 
rH CO CO rH ^ O 
i—H 
1 1 
© <M 
r-H rH 
^ wcocoo^ 
r-H 
1 ( 1 
O Ci 
1 
e 
Calculated. 
O ch co co t> 
CO (M (N h 
1 
O CO 
r-H r-H 
1 
r-H r-H r-H rH 
l 
to CM 
r-H 
I 
Observed. 
• 
tH h+I O0 ^ rH 
H(N(M 
1 
Ci GO 
Cl^COlMCOCl 
r-H CM (M r-H 
r-H r-H 
1 
North. 
*C> 
Calculated. 
4^» 
05 O CO lO IN N 
h (M CO CO CO (M 
tO to co 
r-H CO »“H 
1 1 1 
CO ^ ON 00 ^ 
<M (M CM r-H 
<M ^ O 
r-H <M 
1 1 1 
Observed. 
a 
a? 
cl 
o 
a, 
a 
o 
(M CO ^ 05 O (M 
CO CO CO Ol M 
N 00 N 
H H N 
1 
O O l>» rf< Ct 
CM Cl CO H 
<M 1-H GO 
r-H r-H 
1 
e 
Calculated. 
O 
c 
o 
• 
h 
CM 
(M (M ^ tO CO CO 
CO h h (N co CO 
1 1 
CM H o 
Cl co ^ 
1 I 
C5 O O H GO H 
r-H r-H r-H 
1111 
N- CO O 
C<1 
1 1 
Observed. 
H 
H 
CO <03 GO O r— 1 r-H 
Tt ^ H CO <M 
II! 1 
ZO r-H ZD 
co co 
1 1 
X* o 00 <M o co 
<M CM CO r-H (M 
1 1 
d cd d 
<M r-H 
1 1 
West. 
rC 
Calculated. 
th o n oi ^ 
GO N co to CO 
00 CM N- 
Cl lO GO 
<M Cl <M r-H ^ O 
CO co co CO CM <M 
C0 05 0 
r-H rH CO 
Observed. 
lO co CD CO N 
N- CO h* CO 
COOCO 
^ GO 
OOOOGO^ 
Hfl CO ^ r-H rH 
cr> oo <m 
^ co co 
53 
Calculated. 
N (M lO h 
r-l <M CM 
N- N- <M 
CM ^h 
CD 05 co ^ CO CO 
CO CO ^ ^ ^ TjH 
(M ^ 
^ ^ CO 
Observed. 
N CO O CO CO N 
rH r-H r-H <M 
tH rH rH 
CO CO d 
CO Cl CO CO CO CO 
CO 'rf 'rfi co CO ^ 
oo th co 
CO to ^ 
Group 
No. 
HHHkkH 
^ ^ S ^ > 
M '“I ^ 
XI 
IIIA 
HA 
b HHT r k 
H H P 
XI 
IIIA 
TIA 
