Outputs of the three models presented in Fig. 3 and used to infer the likelihood term ℒ_fractional. From top to bottom, the models have C_length = 1, 4, 10 kpc. Left: distributions of the fractional differences in EW as a function of the spaxel separation (same as right panel of Fig. 2, but for the models). Right: distributions for all the pairs with spaxel separations smaller than 5 kpc, for data (blue) and models (red).