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The precision of time services of 30 observatories in 1954

Bulletin Horaire series E number 12b page 602

Plot shows differences of proleptic UT1(BIH) - time(observatory).
Grid is 5 days in X and 0.02 s in Y.

Heure definitive of time signals in 1961 January

Bulletin Horaire series G number 13 page 408

14th of 14 pages of UT2(BIH) - time(of emission of each station) AND 1st of 3 pages of UT2(BIH) - time(of each observatory)

The precision of time services of 41 observatories in 1961

Bulletin Horaire series G number 18 page 576

Plot shows differences UT2(BIH) - time(observatory).
Grid is 5 days in X and 0.01 s in Y.

Bulletin Horaire series J number 13 page 16

BIH was responsible for determining the frequency offset and time steps that all transmitting stations used for coordinating broadcasts of Universal Time.
BIH also received notices of smaller time steps (called readjustments) performed by individual transmitting stations.

Steve Allen <sla@ucolick.org>
UCO/Lick Observatory
University of California
Santa Cruz
, CA 95064

Phone: +1 831 459 3046