Photospheric motion analysis on AR13470 for the SST/CRISP sub-region A (bottom row), B (middle row), and C (top row). Left column: Distribution of the temporal averages $\overline{v_h}$ over the whole time series. Right column: Fourier spectra of the power spectral density (PSD) for the sub-selection of trajectories corresponding to the red distributions, colour-plotted as 2-D histograms on a log-scale, and with the two power-law fitting (dashed lines).