The probable error of the time ball in each month of the past five years is given in the following table:-
Month. 1923 1924 1925 1926 1927 January, +0.16 ±0.26 ±0.38 ±0.13 ±0.14 February, ±0.14 ±0.13 ±0.22 ±0.18 ±0.12 March, ±0.11 ±0.17 ±0.22 ±0.11 ±0.11 April. ±0.18 ±0.27 ±0.16 ±0.13 ±0.10 May, ±0.13 ±0.23 ±0.11 ±0.10 ±0.14 June, ±0.21 ±0.27 ±0.10 ±0.10 ±0.13 July, ±0.12 ±0.21 ±0.10 ±0.10 ±0.10 August, ±0.28 ±0.16 ±0.12 ±0.10 ±0.12 September, ±0.24 ±0.13 ±0.10 ±0.10 ±0.10 October, ±0.15 ±0.18 ±0.12 ±0.11 ±0.11 November, ±0.21 ±0.14 ±0.10 ±0.10 ±0.10 December, ±0.13 ±0.12 ±0.13 ±0.13 Means, +0.12 +0.12 ±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 until March 31 and subsequently via Cape D'Aguilar. Particulars of the programme are given in Government Notifications Nos. 428 of 6.8.26. and 111 of 25.2.27.
333 observations of the rhythmic radio time signals emitted by Nauen at 8h. a.m., Hong Kong Standard Time, have been made during the year and 81 observations of a similar signal emitted by Bordeaux at 4 p.m. Hong Kong Standard Time.
The observations have been utilized for clock regulation during cloudy weather and have been tabulated for longitude determinations. These cannot be completed until the errors of the time signals are received.
The results of observations made in 1926 are as follows:
Station. No. of Observations. Deduced Longitude of Hong Kong. Nauen 272 7h. 36m. 41.15s. E Bordeaux 125 7h. 36m. 41.29s. E