206 
DR. C. CHREE: DISCUSSION OF KEW MAGNETIC DATA 
Table IX.—Diurnal Inequality in Vertical 
lb. 
2h. 
3b. 
4h. 
5b. 
6h. 
7h. 
00 
9h. 
lOh. 
lib. 
12h. 
January . . 
- 6 
- 10 
- 16 
- 18 
| 
- 19 
- 20 
- 23 
- 25 
- 30 
- 36 
- 33 
- 39 
February . . 
- 8 
- 20 
- 24 
- 19 
- 21 
- 23 
- 23 
- 23 
- 31 
- 61 
- 70 
- 61 
March . . 
- 6 
— 15 
- 21 
- 20 
- 17 
- 15 
- 6 
- 10 
- 44 
- 90 , 
-126 
-127 
April . . . 
-l- 
4 
- 8 
- 14 
- 15 
- 8 
+ 2 
+ 10 
- 4 
- 51 
-106 
-153 
-167 
May.... 
+ 
7 
0 
— 2 
+ 2 
+ 7 
+ 6 
- 10 
— 35 
- 85 
-149 
-194 
-190 1 
J une . . 
- 5 
- 19 
- 20 
- 14 
- 8 
- 16 
- 25 
- 51 
- 84 
-129 
—162 
-154 
July. . . . 
- 3 
- 25 
- 33 
- 30 
- 21 
- 34 
- 41 
— 55 
— 85 
-115 
-151 
-155 
August . . . 
- 2 
- 10 
- 10 
- 8 
+ 4 
+ 9 
+ 6 
- 13 
- 59 
-106 
-143 
-147 
1 September. . 
- 2 
- 9 
- 16 
- 18 
- 21 
- 15 
- 11 
- 28 
- 66 
-106 
— 127 
-122 
October . . 
- 8 
- 14 
- 23 
- 24 
- 26 
- 25 
- 15 
- 10 
- 31 
- 72 
- 98 
- 89 
November. . 
- 15 
- 20 
- 23 
- 23 
— 22 
- 27 
- 31 
- 25 
- 31 
- 54 
- 54 
- 37 
j December . . 
- 3 
- 12 
- 15 
- 17 
- 13 
- 12 
- 13 
- 16 
- 23 
- 36 
- 34 
- 35 ! 
j Winter. 
- 8 
- 10 
- 20 
- 19 
- 19 
- 20 
- 23 
— 22 
- 29 
- 47 
- 48 
- 43 
Equinox . . 
- 3 
- 12 
- 18 
- 19 
- 18 
- 13 
- 6 
- 13 
- 48 
- 94 
— 126 
-126 
Summer . . 
- 1 
- 13 
- 16 
- 13 
— 5 
- 9 
- 17 
- 38 
- 78 
-125 
-163 
-162 
Tear. . . . 
- 4 
- 14 
- 18 
- 17 
- 14 
- 14 
- 15 
- 25 
- 52 
- 88 
— 1 12 
-110 
Table X.—Diurnal Inequality in Vertical Force, 
lb. 
2h. 
3h. 
4h. 
5h. 
6h. 
7h. 
8h. 
9h. 
10h. 
nil. 
12h. 
January . . 
- 4 
- 10 
- 20 
- 24 
— 
25 
— 
24 
— 
27 
— 
28 
- 34 
— 45 
- 41 
- 50 
February . 
- 6 
- 21 
- 24 
- 20 
- 
26 
- 
31 
- 
27 
- 
23 
- 37 
- 78 
- 88 
- 74 
March . . . 
- 17 
- 22 
- 34 
- 30 
- 
22 
- 
18 
0 
0 
- 38 
- 90 
-130 
-133 
April . . . 
- 5 
- 18 
- 22 
- 21 
- 
8 
+ 
8 
-F 
20 
+ 
7 
- 46 
-105 
-160 
-178 
May .... 
0 
— 5 
- 7 
+ 3 
+ 
13 
+ 
13 
- 
5 
- 
35 
- 91 
-168 
-223 
-215 
June 
- 16 
- 28 
- 28 
- 18 
- 
6 
- 
10 
- 
20 
- 
53 
- 89 
-146 
-185 
-180 
July. . . . 
- 9 
- 39 
- 49 
- 47 
- 
36 
45 
- 
56 
- 
73 
-102 
-135 
-171 
-178 
August. . . 
— 5 
- 13 
- 15 
- 13 
+ 
2 
+ 
10 
+ 
8 
- 
10 
— 59 
-115 
-153 
-156 
September. 
- 5 
- 11 
- 18 
- 23 
- 
26 
19 
- 
13 
- 
31 
- 73 
-116 
-138 
-130 
October . . 
- 12 
— 22 
- 34 
- 36 
— 
39 
_ 
38 
- 
24 
— 
16 
- 34 
- 83 
-112 
-105 
November. . 
- 21 
- 28 
- 30 
- 31 
— 
29 
— 
33 
— 
36 
- 
24 
- 30 
- 59 
- 62 
- 45 
December . . 
- 12 
- 25 
- 26 
-26 
- 
22 
_ 
19 
19 
_ 
19 
- 26 
- 43 
- 46 
- 42 
Winter. . . 
- 11 
- 21 
- 25 
- 25 
_ 
26 
- 
27 
_ 
27 
_ 
24 
- 32 
— 56 
- 59 
- 53 
Equinox . 
- 10 
- 18 
- 27 
- 28 
- 
24 
17 
- 
4 
- 
10 
- 48 
- 99 
-135 
-136 
Summer . . 
- 8 
- 21 
- 25 
- 19 
— 
7 
8 
— 
18 
— 
43 
- 85 
-141 
-183 
-182 
Tear. . . . 
~ 9 
- 2 ° 
- 26 
- 24 
— 
19 
— 
17 
— 
17 
— 
25 
— 55 
- 99 
-126 
-124 
