Representative example of visibility amplitudes (top panels) and closure phases (bottom panels) for the L and M bands (left column) and the N band (right column). The different colours indicate different baselines for visibilities and triplets for closures phases. The spectral region between 4.27 and 4.44 μm suffers from noise due to the telluric lines in this range. The night shown in this plot is 25 June 2019, as in Fig. 3.