Determining the FAP for the signal of the transiting planet in the RVs. For each window size, the FAP was calculated comparing the combined power of the highest peaks appearing around the 2.62-day period of the transiting planet candidate and the 1.62-day alias from 50 000 permutations with the combined power of the signals in the original GLS. The black line shows a third-order polynomial fit to the data, which is extrapolated to zero to determine the FAP.