- means too late.
+ means too early.
Table I.
Errors of the Time Ball in 1911.
- means too late.
+means too early.
!
Date.
Jan.
Feb.
Mar. April. May.
June. July.
Aug.
Sept.
Oct.
Nov. Dec.
!
1
0.1
...
0.1
0.1
+0.4 -0.3 -0.2
-0.3 -0.2
2
0.1
0.1
...
+0.4
0.1
+0.2
0.1
+0.4
3
0.1
0.1
0.1
0.1
+0.5 1
+0.3
+0.2
4
0.1
-0,2
+03
0.1
+0.5
0.1
0.1
3838
0.1 +0.8
0.1
0.1
0.1
5
0.1
0.1
0.1
0.1
0.1 -0,2
0.1
6
0.1
-0.2
0.1
0.1
0.1
0.1
0,1
0.1
-0.4
0.1
+0.2
7
+0.2
-0.2
0.1
0.1
-0.3
-0.2
+0.2
0.1
-0.3
0.1
+0.5
8
0.1
0.1
0.1
+0.2
0.1
0.1
+0.2
0.1
0.1
0.1
9
0.1 i
0.1
+0.2
0.1
0.1
0.1
-- 0.2
0.1
0.1
0,1
10
0.2
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
-0.2
11
0.1
0.1
+0.2 !
+0.2
0.1
+
-0.2
-0.2
-0.4
-0.2
0.1
0.1
12
0.1
0.1
0.1
0.1 -0,3
0.1
-0.2
0.1
...
0.1
13
+0.2
0.1
0.1
0.1
0.1
0.1
-0.4
·
0.1
0.1
0.1
0.1
14
+0.3
0.1
0.1
0.1
-0.5
0.1
-0.2
0.1
0.1
0.1
15
+0.2
0.1
0.1
+0,2
0.1
0.1
-0.3
0.1
0.1
16
0.1
0.1
+0.2
0.1
0.1
0.1
-0.2
+0.2
-0.2
-0.2
E 7
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