Ensemble power spectra of simulated DRW light curves with the same observing pattern as combined SDSS+PS1+Gaia+ZTF data, interpolated via RBFs. Red points show the measured power spectral densities, while the black solid line refers to the power spectrum associated to the DRW model. Each panel has DRW light curves with different damping timescales, as listed on the figures, probe regions where the interpolation falls before, within or after the break.