Width and position of the observed 69 μm bands relative to each other. The short blue curve connecting the circle, triangle and square in the lower left corner is for model 69 μm bands with a mass loss rate of 10 × 10-5 M⊙/yr. We also calculated model bands for the mass loss rates 1 × 10-5 M⊙/yr and 5 × 10-5 M⊙/yr, but these are not distinguishable from the 10 × 10-5 M⊙/yr models and they are not plotted. The circle, triangle and square are for superwind radii of 200, 500 and 2500 AU, respectively. In contrast to the standard model, in this case the crystalline olivine is also present in the pre-superwind mass loss period ejected before the superwind started. All other parameters are listed in Table 3. For the rest, the figure is the same as Fig. 10.
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