Model fits to unbinned, combined EPIC event lists (110 photons). The flare model is a fast-rise exponential decay model with five parameters. The sine model is a sine wave with four parameters. The box model is a two-level profile with four parameters. We calculated the goodness-of-fit of each model to the unbinned data using the C-statistic (W. Cash 1979). We then calculated the BIC values as ﹩-2{\rm{ln}}\hat{L}+k{\rm{ln}}(n)﹩, where ﹩\hat{L}﹩ is the C-statistic maximum likelihood value, k is the number of model parameters, and n is the sample size (110 photons). The reported differences in BIC, ΔBIC, are relative to the best-fitting model: the box model. A higher dBIC indicates a worse fit. Data are shown in nine bins only for visualization; no models were fit to binned data.