ON “QUIET” DAYS DUEINO THE ELEVEN YEAES 1890 TO 1900, ETC. 
387 
of Diurnal Inequality of Horizontal Force (1890 to 1900). Unit = ly. 
Period, 8 hours. 
Period, 6 hours. 
as- 
&3* 
^3* 
as- 
h. 
Ci. 
^4. 
+ 0-62 
- 1-70 
1-81 
159 
47 
+ 0-18 
+ 1-36 
1-38 
7 
29 
January. 
+ 1-23 
- 2-00 
2-35 
148 
25 
-0-31 
+ 1-39 
1-42 
- 12 
32 
February. 
+ 1-44 
-3-14 
3-45 
155 
25 
+ 0-01 
+ 1-79 
1-79 
0 
15 
March. 
+ 1-92 
- 2-92 
3-50 
146 
38 
+ 0-18 
+ 1-64 
1-65 
6 
6 
April. 
- 0-66 
-1-80 
1-91 
200 
3 
+ 1-13 
+ 0-60 
1-28 
62 
3 
May. 
- 1-01 
-2-04 
2-28 
206 
20 
+ 0-32 
+ 0-59 
0-67 
28 
10 
June. 
0-00 
- 2-20 
2-20 
180 
0 
+ 0-11 
+ 0-55 
0-56 
11 
9 
July. 
- 1-25 
-2-91 
3-17 
203 
16 
+ 0-86 
+ 1-20 
1-48 
35 
35 
August. 
_ 1 -24 
-3-77 
3-96 
198 
10 
+ 1-18 
+ 1-96 
2-28 
31 
5 
September 
+ 1-01 
-3-10 
3-26 
162 
1 
+ 0-50 
+ 1-74 
1-81 
16 
10 
October. 
+ 0-85 
-1-91 
2-09 
155 
59 
+ 0-48 
+ 1-14 
1-24 
22 
58 
November. 
+ 0-60 
-0-85 
1-04 
144 
33 
0-00 
+ 0-64 
0-64 
0 
0 
December. 
Mean of 12 monthly 
+ 0-293 
-2-361 
_ 
+ 0-386 
+ 1-216 
— 
values. 
Inequality for— 
_ 
— 
2-382 
172 
56 
— 
— 
1-276 
17 
37 
Year. 
+ 0-828 
-1-614 
1-814 
152 
51 
+ 0-089 
+ 1-131 
1-134 
4 
30 
Winter. 
+ 0-782 
-3-230 
3-321 
166 
23 
+ 0-466 
+ 1-781 
1-840 
14 
40 
Equinox. 
-0-730 
-2-238 
2-354 
198 
4 
+ 0-604 
+ 0-736 
0-952 
39 
22 
Summer. 
of Diurnal Inequality of Vertical Force (1891 to 1900). Unit = ly. 
Period, 8 hours. 
Period, 6 hours. 
Us- 
h. 
Cs- 
as- 
h. 
U- 
^4. 
+ 0-50 
- 0-21 
0-54 
113 10 
- 0 - 37 
+ 0-09 
0-38 
283 20 
January. 
+ 1-27 
- 0-11 
1-27 
94 50 
-0-42 
- 0-10 
0-43 
256 23 
February. 
+ 2-64 
-0-03 
2-64 
90 40 
- 1-10 
+ 0-15 
1-12 
277 50 
March. 
+ 2-92 
-0-09 
2-92 
91 46 
-0-94 
+ 0-38 
1-01 
291 42 
April. 
+ 2-78 
-0-57 
2-84 
101 40 
-0-73 
+ 0-40 
0-83 
298 34 
May. 
+ 1-56 
-0-52 
1-65 
108 20 
-0-43 
+ 0-32 
0-53 
306 48 
June. 
+ 1-94 
+ 0-28 
1-96 
81 41 
-0-45 
-0-34 
0-57 
233 15 
J uly. 
+ 2-57 
-0-64 
2-65 
103 57 
-0-51 
+ 0-16 
0-53 
287 23 
August. 
+ 2-29 
-0-79 
2-42 
109 10 
-0-60 
+ 0-50 
0-78 
309 30 
September. 
+ 2-10 
-0-43 
2-14 
101 27 
-0-95 
+ 0-12 
0-96 
276 58 
October. 
+ 0-91 
-0-39 
0-99 
113 6 
-0-73 
+ 0-23 
0-77 
287 30 
November. 
+ 0-62 
-0-27 
0-67 
113 54 
-0-13 
+ 0-03 
0-13 
283 4 
December. 
Mean of 12 monthly 
+ 1-84 
-0-31 
_ 
_ 
-0-61 
+ 0-16 
— 
— 
values. 
Inequality for— 
_ 
_ 
1-87 
99 40 
_ 
— 
0-63 
284 38 
Year. 
+ 0-82 
-0-25 
0-86 
108 37 
-0-41 
+ 0-06 
0-42 
278 35 
Winter. 
+ 2-49 
-0-34 
2-51 
97 40 
-0-90 
+ 0-28 
0-94 
287 34 
Equinox. 
+ 2-22 
-0-36 
2 - 24 
99 17 
-0-53 
+ 0-13 
0-55 
284 13 
Summer. 
3 D 2 
