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Fig. 4

image

Top: the input period spacing pattern (black dots and grey triangles) with the best-fitting pattern (white squares) as obtained from the χ2-minimisation in Fig. 6 assuming (l, m) = (1, 1). The black part of the input patterns was used to determine frot and ΔΠl, while the grey section was excluded. Bottom: the residuals of the fit.

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