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Fig. 16.

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Superhump excess calculated from adjacent peaks or minima for our variable mass transfer model (red or blue crosses, see the first panel in Fig. 14). The blue dots are an average of nearby data points and the orange dots are the precession rate of the disk. The black dots are the superhump excess computed from Kepler data of V1504 Cygni using an orbital period of 1.668 h (Coyne et al. 2012).

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