Observed and model visibilities of J154518.5-342125, plotted as real and imaginary parts as a function of the baseline (in kλ). The data from the observations are plotted as black data points with error bars, the model with the lowest χ² is shown as solid red curve, and a random set of models from the parameter space investigation are drawn as gray curves. This figure was made with the uvplot Python package Tazzari (2017).