Diurnal Variations for the Magnetic Dip. 
Ixiii 
Table 59. — Diurnal Variations of the Magnetic Dip for different Periods, deduced from Days selected 
as fi'ee from IiTegular Disturbance in the Years 1844 and 1845. 
Mak. 
Mean 
Time. 
Dec. 
J an. 
Feb. 
March. 
April. 
May. 
June. 
July. 
Aug. 
Sept. 
Uct. 
Nov. 
Sis M 
oept. 
to 
Feb. 
onths. 
March 
to 
Auff. 
to 
Twelve 
Months. 
h. 
m. 
' 
' 
' 
' 
' 
1 9 
1 9 
+ 0-084 
-0-362 
-0-319 
-0-370 
-0-280 
-0-098 
-0-350 
-0-225 
1 o 
+ 0-151 
-0-260 
-0-168 
-0-240 
-0-221 
-0-035 
-0-223 
-0-129 
1 9 
+ 0-136 
-0-115 
-0-037 
-0-108 
-0-217 
-0-041 
-0-086 
-0-064 
1 9 
+ 0-033 
-0-034 
+ 0-106 
-0-034 
-0-257 
-0-112 
+ 0-012 
-0-051 
1 
1 9 
-0-081 
-0-068 
+ 0-190 
+ 0-087 
-0-316 
-0-198 
+ 0-069 
-0-064 
1 7 
1 9 
-0-229 
-0-182 
+ 0-388 
+ 0-285 
-0-350 
-0-289 
+ 0-163 
-0-063 
1 o 
1 9 
-0-265 
-0-071 
+ 0-658 
+ 0-604 
-0-202 
-0-233 
+ 0-396 
+ 0-081 
1 Q 
1 9 
-0-270 
+ 0-200 
+ 1-002 
+ 1-061 
+ 0-132 
-0-070 
+ 0-754 
, +0-342 
1 9 
-0-095 
+ 0-775 
+ 1-492 
+ 1-635 
+ 0-777 
+ 0-341 
+ 1-300 
1 +0-820 
21 
12 
+ 0-113 
+ 1-334 
+ 1-810 
+ 2016 
+ 1-287 
+ 0-700 
+ 1-719 
+ 1-208 
1 o 
+ 0-370 
+ 1-693 
+ 1-839 
+ 2-022 
+ 1-495 
+ 0-932 
+ 1-851 
■ +1-391 
2.3 
12 
+ 0-425 
+ 1-495 
+ 1-403 
+ 1-493 
+ 1-138 
+ 0-781 
+ 1-463 
+ 1-122 
0 
12 
+ 0-258 
+ 0-984 
+ 0-749 
+ 0-779 
+ 0-715 
+ 0-487 
+ 0-837 
+ 0-661 
1 
12 
-0-010 
+ 0-423 
+ 0-063 
+ 0-037 
+ 0-158 
+ 0-073 
+ 0-174 
+ 0-124 
2 
12 
-0-094 
-0-028 
-0-296 
-0-532 
-0-073 
-0-084 
-0-286 
-0-185 
3 
12 
-0-052 
-0-438 
-0-715 
-0-903 
-0-205 
-0-129 
-0-686 
-0-407 
4 
12 
-0-082 
-0-434 
-0-953 
-0-860 
-0-332 
-0-207 
-0-750 
-0-477 
5 
12 
-0-194 
-0-611 
- 1-298 
- 1-111 
-0-401 
i -0-297 
-1-008 
-0-653 
6 
12 
-0-184 
-0-755 
-1-385 
-1-210 
-0-551 
-0-367 
- 1-117 
-0-742 
7 
12 
-0-084 
-0-866 
- 1-355 
- 1-276 
-0-546 
-0-314 
- 1-166 
-0-741 
8 
12 
-0-024 
-0-730 
-1-096 
- 1-142 
-0-491 
-0-258 
-0-990 
-0-624 
9 
12 
+ 0-065 
-0-610 
-0-889 
-0-917 
-0-474 
-0-204 
-0-806 
-0-504 
10 
12 
+ 0-037 
-0-713 
-0-676 
-0-716 
-0-429 
-0-196 
-0-702 
-0-449 
11 
12 
+ 0-003 
-0-621 
-0-522 
-0-592 
-0-364 
1 -0-180 
-0-579 
j -0-380 
Table 60. — Differences of Disturbed and Undisturbed Diurnal Variations of Magnetic Dip, as deduced 
from Tables 58 and 59, exhibiting the Effect of Irregular Disturbance on the Hourly Mean Position. 
Six Months. 
Mak. 
Mean 
Dec. 
Jan. 
March. 
May. 
July. 
Sept. 
Oct. 
Sept. 
March 
Twelve 
Time. 
Feb. 
April. 
June. 
Aug. 
Nov. 
to 
to 
Months. 
Feb. 
Aug. 
h. 
m. 
12 
12 
+ 0-079 
+ 0-016 
+ 0-143 
-0-054 
+ 0-078 
+ 0-079 
+ 0-035 
' +0-057 
13 
12 
+ 0-041 
+ 0-229 
+ 0-099 
+ 0-054 
-0-067 
-0-013 
+ 0-128 
+ 0-057 
14 
12 
+ 0-211 
+ 0-446 
+ 0-097 
+ 0-066 
+ 0-060 
+ 0-136 
+ 0-202 
+ 0-169 
15 
12 
+ 0-042 
-0-008 
+ 0-062 
+ 0-066 
-0-125 
-0-041 
+ 0-041 
0-000 
16 
12 
-0-059 
+ 0-020 
+ 0-141 
+ 0-092 
-0-127 
-0-093 
+ 0-085 
-0-005 
17 
12 
-0-141 
+ 0-024 
+ 0-059 
+ 0-169 
-0-098 
-0-120 
+ 0-085 
-0-018 
18 
12 
-0-158 
-0-113 
+ 0-073 
+ 0-060 
-0-068 
-0-113 
+ 0-008 
-0-052 
19 
12 
-0-090 
-0-020 
+ 0-146 
+ 0-129 
+ 0049 
-0-019 
+ 0-085 
+ 0-033 
20 
12 
-0-051 
+ 0-153 
+ 0-229 
+ 0-221 
-0-009 
-0-030 
+ 0-202 
+ 0-086 
21 
12 
+ 0-050 
+ 0-129 
+ 0-202 
+ 0-245 
+ 0-087 
+ 0-068 
+ 0-193 
+ 0-132 
22 
12 
+ 0-029 
-0-014 
+ 0-184 
+ 0-188 
+ 0-016 
+ 0-023 
+ 0-120 
+ 0-072 
23 
12 
-0-051 
-0-010 
+ 0-080 
+ 0-096 
+ 0-053 
+ 0-001 
+ 0-056 
+ 0-029 
0 
12 
-0-017 
-0-068 
-0-031 
+ 0-054 
-0-060 
-0-039 
-0-015 
-0-026 
1 
12 
-0-026 
-0-240 
-0-118 
-0-001 
-0-089 
-0-057 
-0-119 
-0-089 
2 
12 
-0-087 
-0-261 
-0-300 
-0-009 
-0-104 
-0-095 
-0-189 
-0-143 
3 
12 
-0-120 
-0-194 
-0-186 
-0-186 
-0-172 
-0-145 
-0-188 
-0-167 
4 
12 
-0-077 
-0-365 
-0-430 
-0-410 
-0-047 
-0-062 
-0-401 
-0-233 
5 
12 
+ 0-102 
-0-302 
-0-320 
-0-492 
-0-101 
0-000 
-0-370 
-0-185 
6 
12 
+ 0-059 
-0-082 
-0-275 
-0-387 
+ 0-054 
+ 0-056 
-0-248 
-0-096 
7 
12 
+ 0-013 
+ 0-155 
-0-285 
-0-133 
+ 0-134 
+ 0-073 
-0-087 
-0-007 
8 
12 
-0-009 
-i- 0-119 
-0-062 
+ 0-022 
+ 0-155 
+ 0-074 
+ 0-027 
+ 0-050 
9 
12 
-0-022 
+ 0-141 
+ 0-150 
+ 0-120 
+ 0-166 
+ 0-072 
+ 0-138 
+ 0-103 
10 
12 
+ 0-161 
+ 0-161 
+ 0-111 
+ 0-045 
+ 0-138 
+ 0-150 
+ 0-106 
+ 0-128 
11 
12 
+ 0105 
+ 0-067 
+ 0-247 
+ 0035 
+ 0-096 
+ 0-100 
+ 0-117 
+ 0-109 
MAG. AND MET. OBS. 1845 AND 1846. ? 
