Extraplanar star formation efficiency vs. dynamical properties of the GASP sample. Extraplanar specific star formation rate, log₁₀(sSFR_tail) (top), and star formation rate fraction, log₁₀(F_tail) (bottom), vs. 3D Mach number, ℳ_3D (left), and ram pressure, P_ram (right, presented on a logarithmic scale for visual clarity). Each point is color coded based on its corresponding total star formation rate (Gullieuszik et al. 2020). JO147 and JO206 are marked with red and blue circles, respectively. Points marked with silver boxes may suffer from systematic ℳ_3D underestimates (see Sect. 4.3).