408 DR. C. CHREE: ANALYSIS OF RESULTS FROM THE KEW MAGNETOGRAPHS 
Table XXXV.—Annual Variation of Fourier Coefficients in 
Cl. 
c-i. 
Kew. 
Greenwich. 
Kew. 
Greenwich. 
i 
[ 
Sun-spot 
11 years. 
Sun-spot 
Sun-spot 
Sun-spot 
11 years. 
Sun-spot 
Sim-spot 
1 
1 
minimum. 
maximum. 
maximum. 
minimum. 
maximirm. 
maximum. 
January . . 
53 
56 
62 
63 
43 
46 
47 
51 
February. . 
64 
75 
84 
92 
49 
56 
59 
64 
March. . . 
97 
99 
96 
104 
105 
110 
112 
114 
April . . . 
126 
116 
115 
111 
140 
131 
128 
144 
May . . . 
127 
130 
129 
124 
141 
144 
139 
131 
June . . . 
1 
152 
144 
144 
131 
144 
135 
136 
133 
1 July . . . 
i 
143 
136 
131 
128 
129 
132 
130 
127 
! 
: August . . 
i 
136 
133 
128 
114 
143 
141 
144 
127 
September . 
118 
118 
113 
109 
118 
119 
117 
108 
October . . 
87 
89 
90 
94 
88 
88 
84 
91 
November 
53 
61 
58 
68 
58 
56 
58 
65 
December 
44 
44 
49 
62 
42 
42 
44 
47 
Winter . . 
54 
59 
63 
72 
48 
50 
52 
57 
Equinox . 
107 
105 
103 
104 
112 
111 
110 
113 
Summer . 
139 
135 
133 
124 
139 
■ 
138 
138 
130 
Absolute' 
values of 
coefficients 
in mean 
diurnal in- 
_ 
1-801 
2-322 
2-858 
3-204 
1-541 
1 - 789 
2-106 ' 
2-007 
1 equality for 
the yeai' 
’ 
Mean of 12' 
m 0 n t li 1 y 
values 
1-859 
2-371 
2-905 
3-313 
1-567 
1-818 
i 
2-146 : 
2-063 
