AMBER results (black) compared to the prediction by the best-fit dynamic model (red). The two top panels show the squared visibilities and closure phases versus wavelength for the example of a compact baseline configuration (data set No. 5 in Table 1), followed by an example of an extended configuration (data set No. 9). The blue bars denote the mean errors for the first and second halves of the wavelength range. The three lines correspond to the three baselines of the baseline triplet.