Table I,-Continued.
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. 17 +0.5 18 0.1 0.3 0.1 +0.3 -0.2 0.1 +0.2 0.1 0.1 +0.4 +0.2 19 -0.4 +0.2 -0.7 0.1 -0.2 +0.5 +0.2 -0.3 0.1 20 -0.4 -0.3 0.1 +0.3 - -1.0 +0.2 0.1 + +0.4 -0.3 -0.4 21 -0.6 -0.2 0.1 0.1 +0.5 0.1 0.1 0.1 0.1 -0.2 0.1 22 0.1 0.1 -9.3 0.1 0.1 0.1 0.1 0.1 0.1 23 +0.2 0.1 -0.2 0.1 0.1 0.1 +0.3 0.1 0.1 24 0.1 0.1 -0.5 -0.4 0.1 0.1 0.1 -0.3 25 +0.2 0.1 +0.2 0.1 0.1 0.1 0.1 0.1 - -0.2 -0.4 26 +0.3 0.1 -0.7 0.1 0.1 0.1 +0.5 0.1 27 0.1 0.1 0.1 0.1 0.1 0.1 0.1 -0.3 -0.3 0.1 28 +0.4 0.1 0.1 +0.3 0.1 0.1 0.1 0.1 0.1 -0.3 0.1 29 0.1 +0.5 0.1 0.1 0.1 0.1 -0.3 +0.2 30 -0.2 -0.4 0.1 +0.2 0.1 -0.3 +0.3 31 -0.2 +0.2 +0.2 0.1 +0.2