24 
DR S. CHAPMAN ON THE SOLAR AND LUNAR 
Table C. — The Spherical Harmonic Representation of the Solar Diurnal Variations 
of West and Vertical Magnetic Force. 
Values of A m n , B m n , A m n , B m n . 
The Unit of Force is 10~ 6 C.G.S. 
Sunspot maximum, 1905. 
Sunspot minimum, 1902. 
West. 
Vertical. 
West. 
Vertical. 
n. 
m. 
A n 
B n 
% • 
A n 
B 11 
A n 
T> n 
A m n . 
B m ". 
Mean Equinox 
, HSpri 
ng + Autu 
mn). 
1 
2 
-54 
26 
-41 
14 
-34 
25 
- 34 
4 
2 
3 
- 7-2 
3-7 
■ 8-5 
o-i 
5-1 
3-6 
- 5-4 
0-3 
3 
4 
- 0-45 
0-40 
- 0-87 
0-29 
- 0-31 
0-37 
- 0-71 
0-30 
4 
5 
0-0123 
0-0203 
- 0-040 
0-022 
■ 0-0082 
0-0156 
- 0-037 
0-027 
Mean 
Solstice, 
\ (Summer + Winter). 
1 
o 
-52 
22 
-37 
12 
-31 
22 
-31 
7 
2 
3 
- 6-4 
3-1 
7-3 
- 0-5 
- 4-6 
2-9 
- 5-6 
0-6 
3 
4 
- 0-34 
0-29 
- 0-71 
0-30 
- 0-24 
0-24 
- 0-46 
0-23 
4 
5 
- 0-0086 
0-0091 
- 0-020 
o-oio 
- 0-0039 
0-0068 
- 0-015 
0-013 
Solstitial Inequality, \ (Summer — Winter). 
1 
1 
-42 
21 
- 4 
- 1 
-40 
17 
- 10 
0 
3 
- 10-6 
- 4-5 
- 14-0 
- 2-5 
- 8-1 
- 2-3 
- 7-7 
-3-5 
2 
2 
- 3-9 
7-8 
1-5 
2-6 
- 2-7 
5-3 
- 3-4 
2-5 
4 
- 0-60 
0-35 
1-41 
- 0-37 
- 0-78 
0-37 
- 0-85 
-0-40 
3 
3 
0-17 
0-70 
- 0-038 
0-070 
o-oi 
0-63 
- 0-056 
0-046 
5 
0-036 
- 0-011 
- 0-030 
- 0-072 
0-016 
- 0-006 
- 0-024 
-0-051 
4 
4 
0-048 
- 0-007 
0-048 
0 ■ 035 
0-028 
- o-oio 
0-030 
0-040 
6 
0-0045 
- 0-0099 
0-013 
- 0-040 
0-0020 
- 0-0101 
- 0-013 
-0-053 
Mean of 1902 and 1905. 
Solstitial inequality. 
Equinoctial inequality. 
1 
1 
-41 
19 
■ 7 
0 
13 
- 13 
0-61 
-0-42 
3 
- 9-4 
- 3-4 
- 10-8 
■ 3-0 
- 0-60 
1-64 
- 0-99 
1-49 
2 
2 
3-3 
6-6 
- 2-4 
2-6 
0-2 
- 5-5 
1-5 
-3-2 
4 
-0-69 
0-36 
- 1-13 
- 0-38 
- 0-047 
0-104 
- 0-19 
0-43 
3 
3 
0-09 
0-66 
- 0-047 
0-058 
- 0-29 
- 0-60 
o-oo 
-0-58 
5 
0-026 
■ 0-008 
- 0-027 
- 0-062 
- 0-0024 
0-0039 
- 0-017 
o-oio 
4 
4 
0-038 
- 0-009 
0-039 
0-038 
- 0-037 
- 0-013 
- 0-014 
-0-037 
6 
0-0032 
o-oioo 
- 0-013 
- 0-046 
0-0038 
- 0-0032 
- 0-013 
0-009 
