F 14
In the following table is given the number of times different errors occurred in the years 1925 and 1926:—
Error of Time Ball 1925 1926 0'3 sec. or less 631 0'4 12 0'5 8 0'6 5 0'7 3 0'8 1 2 0'9 1 650The error of 0.8 sec, which occurred on February 18th, was owing to accidental over-correction of the Mean Time clock.
The Mean probable error of the time ball in each month of the past five years is given in the following table:—
Month 1922 1923 1924 1925 1926 January +0'10 +0.16 ±0.26 ±0.38 February +0'15 0'14 0'13 ±0'22 ±0.13 March 0'12 0'11 0'17 ±0'22 0'11 April 0'20 0'18 ±0'27 0'16 0'13 May 0'10 ±0'13 ±0'23 0'11 0'10 June ±0'11 ±0'21 ±0'27 ±0'10 0'10 July 0'14 0'12 ±0'21 0'10 0'10 August 0'10 ±0'28 0'16 0'12 0'10 September 0'15 0'24 0'13 0'10 0'10 October 0'10 0'15 0'18 0'12 0'11 November 0'17 ±0'21 0'14 0'10 0'10 December 0'10 0'13 0'12 0'10 0'13 Means +0'12 +0.13 ±0.17 +0.19 ±0.15Time Signals by Radio-Telegraphy.—In addition to the time signals given by the Time Ball, and on the radio mast, signals are broadcast at 10h, and 21h. by radio telegraphy via Stonecutters. Particulars of the programme are given in Government Notification No.428 of 6.8.26.