EAETH’S MAGNETISM AT PAVLOVSK AND POLA (1897-1903). 
317 
Table YIb. —Fourier Coefficients of the Lunar Diurnal Variations of the Geographical 
Components of Magnetic Force at Pavlovsk and Pola, # in the Formula 
2 ( a n cos nt + b n sin nt). 
The time t = 0 is the local time of upper culmination of the moon at the phase of 
new moon; the unit of force is 10“‘ C.G.S.; + denotes an increase of force to 
the North, West, or to the Nadir. 
North force. 
West force. 
Vertical fcrce. 
n. 
Pavlovsk. 
Pola. 
Pavlovsk. 
Pola. 
Pavlovsk. 
Pola. 
Chi- 
b n . 
a n . 
i b n . 
Cl n . 
b n . 
a n . 
bn- 
a„. 
bn- 
Summer. 
1 
25 
56 
28 
107 
116 
-61 
91 
-66 
- 18 
31 
-12 
9 
2 
15 
104 
61 
119 
128 
- 6 
158 
28 
6 
12 
-46 
41 
3 
- 1 
62 
59 
62 
28 
1 
78 
2 
10 
- 3 
-22 
21 
4 
-25 
7 
14 
13 
2 
1 
- 4 
■ 0 
- 1 
- 1 
- 4 
3 
Equinox. 
1 
- 8 
41 
5 
63 
68 
-40 
57 
-42 
-10 
- 8 5 
- 14 
9 
2 
3 
48 
41 
68 
82 
3 
53 
28 
- 5 5 
-16 
- 6 
23 
3 
6 
63 
45 
55 
13 
- 2 
47 
-10 
- 1 
- 1 
- 3 
13 
4 
- 9 
26 
17 
12 
13 
- 7 
24 
- 8 
4 
3 
- 2 
14 
Winter. 
1 
0 
- 17 
28 
- 41 
- 17 
-22 
- 30 
- 35 
26 
- 85 
- 12 
8 
2 
-19 
- 7 
24 
- 18 
- 26 
25 
- 28 
35 
- 2 
05 
-30 
18 
3 
- 19 
- 7 
4 
- 10 
- 16 
13 
- 9 
12 
2 
0 
- 7 
0 
4 
0 
2 
1 
- 2 
11 
- 11 
0 
3 
- 3 
2 5 
1 
0 
* Cf. § 11. 
