Apodized test for the three planets orbiting around HD 176986. Color-coded dots represent the epochs of observations of different instruments. Panel a: apodized signal for the 6.5 d planet found in Suárez Mascareño et al. (2018). The signal is stable throughout the time series, but it shows a different amplitude at different epochs. Panel b: apodized signal for the 16.8 d planet. The signal is present in the full dataset and it is stable over time. Panel c: Apodized signal for the 61.4 d candidate. The signal is stable over time.