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Fig. 4


Expected timing uncertainties during and after a sequence of timing measurements based on an ephemeris with given errors in epoch and period. The axes are similar to those in Fig. 1. The dashed line gives the development of the 1-sigma uncertainty from an error sum using the period error and the epoch error at the beginning of the sequence. The solid lines outline the correct timing uncertainty, with the epoch error being derived for the centre of the sequence. For epochs beyond the end of the sequence, this uncertainty is also identical to the prediction uncertainty given by Eq. (18).

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