The Supplement from Measurement of the Earth's rotation: 720 BC to AD 2015
StephensonF. R.
MorrisonL. V.
HohenkerkC. Y.
2016
This material consists of the tables of the observational data prior to 1600, discussion of the comparative accuracy of Babylonian time intervals, a commentary on critical eclipses and a list of rejected observations. Lastly, a table of coefficients that approximate the spline fit to Delta T.