Relative mass-loss rates (filled symbols) Ṁ in units of Ṁ₀, the mass-loss rate at , and corresponding terminal velocities (open symbols) in  [km   s^-1]  for a flux tube located in our Galaxy at a galactocentric distance of R₀ = 10   kpc as a function of the mean cosmic ray diffusion coefficient . Only values of reduce the mass loss rate significantly, but also increase the final wind velocities owing to lower thermal gas ejections (see text for details).