MAGNETIC DECLINATION AT BOMBAY. 
371 
Table V. — Showing the aggregates of Westerly disturbances exceeding l ,- 4 in amount 
for each hour of the day in each of the years 1859 to 1865, and in the whole period 
of seven years ; also, for the whole period, the ratios of aggregate disturbance at 
the several hours to the average aggregate hourly disturbance in the twenty-four 
hours. 
Bombay 
Aggregates of Westerly Disturbance. 
Astronomical 
Hours. 
1859. 
1860. 
1861. 
1862. 
1863. 
1864. 
1865. 
Seven years, 
1859 to 1865. 
Ratios. 
h m 
4 12 
15013 
32-064 
14-454 
32-204 
6-893 
11-174 
9-100 
120-902 
1-08 
5 12 
7-905 
19-412 
9-513 
12-966 
1-418 
9-040 
8-438 
68-692 
061 
6 12 
4-717 
8013 
6-502 
11-999 
1-404 
2-512 
9008 
44-155 
0-39 
7 12 
3-263 
10-143 
5-509 
17-113 
0000 
3-768 
7-906 
47-702 
0-43 
8 12 
0000 
1-609 
1-733 
8-432 
3140 
0000 
5-486 
20-400 
0-18 
9 12 
0-000 
3-117 
0000 
7-209 
1-504 
0-000 
2-908 
14-738 
013 
10 12 
0-000 
6-438 
0-000 
6-841 
1-472 
0-000 
3-568 
18-319 
0-16 
11 12 
2-024 
1-569 
0000 
1-655 
1-518 
0000 
1-561 
8-327 
007 
12 12 
1-896 
0-000 
0-000 
3-661 
0000 
0000 
0-000 
5-557 
0-05 
13 12 
0-000 
3114 
1-550 
6-526 
0-000 
0000 
4-854 
16044 
014 
14 12 
0-000 
5-461 
2-137 
6-513 
1-655 
0-000 
0-000 
15-766 
014 
15 12 
0-000 
6-754 
0000 
6-413 
0-000 
0-000 
1-710 
14-877 
013 
16 12 
0000 
2-011 
1-464 
4-880 
3-653 
0-000 
6-662 
18-670 
017 
17 12 
2-881 
11-698 
0-000 
6-891 
5-446 
1-567 
13378 
41-861 
0-37 
18 12 
25-868 
7-822 
6-827 
23-963 
3-607 
4-765 
13-781 
86-635 
0-77 
19 12 
13-587 
25-168 
21-578 
18-685 
9-431 
8-544 
16-417 
113-410 
1-01 
20 12 
23-262 
40-914 
23-882 
33-729 
31-408 
15 059 
17-349 
185-603 
1-66 
21 12 
51-357 
69-518 
25 055 
43-036 
32-460 
28 909 
15-863 
266-198 
2-37 
22 12 
53-587 
78-239 
48-552 
41-718 
37-928 
27151 
26-749 
313924 
2-80 
2.3 12 
71-600 
68-135 
37-509 
37-271 
41-551 
28-587 
25-384 
310-037 
2-76 
0 12 
83193 
69-272 
49-884 
42-012 
20-564 
17-270 
26-744 
| 308-939 
275 
1 12 
75-811 
60-539 
46-012 
41-489 
26-947 
21-303 
11-828 
| 283-929 
2-53 
2 12 
47-939 
46-296 
22-632 
33-045 
34-339 
12-880 
15-951 
213-082 
1-90 
3 12 
16-962 
29-424 
23-511 
37-265 
15-289 
21-635 
9-483 
j 153-569 
1-37 
The hourly ratios are also represented, in the usual manner, by curve No. 6, 
Plate XXV. 
Table VI. — Showing, for the period 1859 to 1865, the algebraical sum of all disturbances, 
those to the Eastward being reckoned as positive, those to the Westward as negative, 
exceeding l'-4 in amount for each hour of the day. 
Bombay Astronomical Hours. 
h m 
4 12 
h m 
5 12 
h m 
6 12 
h m 
7 12 
h m 
8 12 
h m 
9 12 
h m 
10 12 
h m 
11 12 
h m 
12 12 
h m 
13 12 
h m 
14 12 
h m 
15 12 
Excess of 
Easterly 
Disturbances. _ 
+49-864 
+86-415 
+ 107132 
+ 94123 
+ 147 409 
+114-445 
+98-846 
+ 114167 
+ 117-122 
+ 104-087 
+96-450 
+136-504 
Bombay Astronomical Hours. 
h m 
16 12 
h m 
17 12 
b m 
18 12 
h m 
19 12 
h m 
20 12 
h m 
21 12 
h m 
22 12 
h m 
23 12 
h m 
0 12 
h m 
1 12 
h m 
2 12 
h m 
3 12 
Excess of ] 
Easterly l 
Disturbances. J 
+98-284 
+72-472 
+ 76-936 
+ 102-313 
- 19-833 
- 60-916 
- 9-255 
+ 31-256 
+ 16-353 
+ 5-230 
+30-850 
+ 36-995 
The curve which represents the disturbance diurnal variation, constructed from these 
numbers, is marked fig. 7 on Plate XXV. 
3 d 2 
