Fig. 4

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Nonparametric fitting of the detection rate observed between 29 June 2020 and 27 November 2021 in th inbound and outbound part of the trajectory, with branches being separated by gravity assists on 26 December 2020 and 8 August 2021. The lines are the results of non parametric fitting and only grayed intervals are used for further analysis; readers can compare this with Fig. 3.
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