L_150 MHz–SFR relation obtained for scenario (0) using three different prescriptions for v_adv: v_A (solid cyan line), v_sw (solid pink line), and v_b from Eq. (15) (violet dashed line). The green dashed and green dot-dashed lines represent the primary and secondary electron contributions, respectively, and the dotted violet line represents the free-free contribution. The grey shaded band indicates the 1σ confidence region of the fit (solid grey line) to the data sample (purple points).