Probability of our data (i.e., no flux above the two times the image rms) for the three scenarios of the internal model (Eq. (3)). The solid lines show P₇ the probability that all seven TDFs we observed indeed hosted a jet; the dashed lines show P_≥ 1 the probability that at least one flare hosted a jet. For Γ_j < 3 the former hypothesis is ruled out at 95% confidence for all scenarios.