Cycle-to-cycle averaged visibility profiles of the best dynamic model (green solid line: phase 0.17; blue dashed line: phase 0.23) superimposed on the VINCI data at phase 0.17 (green squares) and phase 0.23 (blue triangles). Dotted error bars give the dispersion created by the cycle-to-cycle variation. In the inset, a zoom of the relevant frequency region is represented.