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Fig. 18
Same as Fig. 16 for the [O i]/[S ii] line ratio. Due to the prominence of [O i] emission over the [S ii] lines close to the star, a few points are off the scale. Their values are: 6.58 at 0.̋175, for the MVI, and 12.10, 14.49, 9.54 and 4.99 at 0.̋175, 0.̋275, 0.̋375 and 0.̋475, respectively, for the HVI.
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