Continuum-subtracted and extinction corrected Hα profiles (black), this time fitted by a sum of a skewed, broad Gaussian (blue) and a narrower Gaussian (green) function to reproduce the broad components. The total fit is shown in red. The spectral phases are shown on the right next to each spectrum. The wavelength range around the narrow component was excluded from the fit. Right panel: velocities and luminosities of the Hα components. The centroid and the FWHM and HWHM of the skewed broad Gaussian (blue) and of the central Gaussian (green) are shown in the top panels, their luminosities and the total luminosity, as well as the velocity of the narrow component are shown in the bottom panels. Here, for the narrow component, we consider the blue-velocity-at-zero-intensity (BVZI) assuming zero velocity at the Hα rest wavelength to obtain a better estimate of the CSM velocity.