LOS velocity distribution of the magnetized supersonic downflows for all of the 14 data sets (panel a), pores (panel b), sunspot penumbrae (panel c), sunspot umbrae (panel d), light bridges (panel e), and plages (panel f). “N_sd” is the number of supersonic downflow profiles in each category. The numbers in red are the mean and standard deviations of the distributions, in km s⁻¹. The blue curve in panel a is the triple-Gaussian fit to the velocity distribution. The vertical solid black lines mark the peaks of this triple distribution.