Fig. A.2.

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χ2 distribution as the function of the assumed time delay for three exemplary light curves showing the best-fit time delay of 533 days (black line), 1475 days (maximum allowed; blue line), and 194 days (minimum allowed, red line). They all show a minimum around ∼700 days, but this is only a local minimum. The assumed time delay is 776.27 days.
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