Top: absolute shift of the broad Gaussian component of the Hα line from Fig. 2, in velocity scale. The data have been fit to Eq. (1) (solid line). The gray area indicates the 95% confidence intervals of the fit. Bottom: distance traveled by the source of the broad component under the assumption that it corresponds to ejected material. Data points are from the numerical integration of the velocity measurements. The solid line is the integral of the function used to fit the velocities.