1 able I. ( b ) (4).—Fourier Coefficients of the Solar Diurnal Magnetic Components at the Equi 
( b) Sunspot Minimum, 1902. 
(4) The 6-hour Component. 
DIURNAL VARIATION 8 OF TERRESTRIAL MAGNETISM 
81 
<p 
x 
o 
c 
I 
Autumn. 
1 
I 
04 CO 
04 O LO 
1 1 
1 1 
to 
1 
LO 
1 
m m 
1 1 
CO 
1 
in 0 
r-H 
• H 
Spring. 
O Ol 
1 
04 CO 04 
1 1 
to 
1 1 
X 
1 
eo 
1 
i 
X CO 
t-H 
1 1 
U- r-H 
1 
c 
p 
p 
+2 
p 
<1 
L"- I>- 
CO 04 O 
r-H r—H 
X X 
hH 
co co 
i 
LO 0 
Spring. 
tO JD- 
1 
05 *>D O 
r-H O 
r-H t-H 
04 
05 
CO 04 
r-H r-H 
04 
1 
LO r-H 
1 
c 
1 
p 
© ^ < 
r-H r—H r—t 
tO r—1 CO 
r-H r-H r-H 
nh to 
r-H r—H 
0 m 
1 —H r-H 
04 
1 
04 lO 
r-H H 
1 1 
r-H 
1 
CO r-H 
1 
Spring. 
0 »o 0 
r-H r-H 
O t- 
i—H r-H 
»— < X- 
r-H t-H 
O LO 
1 
co 0 
04 
r-H r-H 
1 1 
to 
1 
10 X^ 
1 
O 
JZh 
Autumn. 
' ' 
O ^ 04 
1 
L " 2 
>o 0 
r-H r-H 
to X"- 
04 
X 0 
CC 
x o 
1 I 
i 
Spring. 
04 04 tO 
1 1 
r-H X 04 
1 1 1 
co co 
r-H -r+i 
1 1 
26 
1 
1 
-h 
1 
1 
in cn 
1 
1 
Autumn. 
• 
!>• r-H 05 
r-H 
co to CO 
r-H r-H 
05 l- 
X 0 
• 1 
O 
04 
1 
- 10 
- 8 
1— 
1 
CO X 
1 
m 
Spring. 
^ 04 
to LO 
r-H r-H r-H 
I— 04 
CO X 
to to 
lO 04 
04 r-H 
04 
1 
—r -+ 
04 04 
1 1 1 
Autumn. 
GO CO ^ 
r-H 
O tO 05 
04 r-H 
tO X- 
04 04 
r-H CO 
04 04 
CO 10 
04 
to 04 
04 r-H 
to 
I 
- - 1 *+ 
' 
3 
Spring. 
4>- ^ tO 
to X to 
t-H t-H 
— lO 
04 04 
U- X- 
r—H t—H 
05 O 
04 
1 
04 04 
r-H 
LO 
rH 
1 
f —H r—• 
1 1 
Observatory 
No. 
r-H 04 CO 
1 
^ 10 to 
U— X 
1 
05 O 
h 04 
^H r-H 
CO LO 
to X'- 
X 05 0 
r—H 1 —1 04 
1 
Group No. 
HH 
HH 
HH 
i 
HH 
HH 
HH 
1 
> 
1—1 
HH 
fc> 
! vii. 
VIII. 
VOL. CCXVIII.-A. 
M 
