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 +0.3 0.1 +0.5 0.1 0.1 3838 0.1 +0.8 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 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 -0.2E 7
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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