Inferred distributions for the transverse inhomogeneity length scale (left panel), the Alfvén travel time (central panel), and the density contrast between the tube and the environment (right panel). Grey curves represent the marginalized inferred distribution, obtained as the mean of the priors of Sect. 2.4 with parameters distributed according to Fig. 4. Blue lines are the distributions of Sect. 2.4 evaluated at the peak of the distributions of Fig. 4.