Fig. 3
O−C diagram for J2344, following subtraction of best linear fit. Best sinusoidal fit is overplotted (meta-period 4.19 y; χ2 = 2.82). Uncertainties on individual points are not shown for clarity, but are typically of the order of ± 100 s. The final point, around epoch 9000, corresponds to the independent observation of D. Boyd, and has an uncertainty of ± 60 s.
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