Fig. 5
Full width at zero intensity (FWZI) at 658 GHz (H2O, (0, 1, 0) vibrational state) versus FWZI at 86 GHz (SiO, v = 1) for ten sources observed in this work (triangles); R Hor and VY CMa are labeled at the two ends of this plot, and RU Hya is not included because of very weak emission. Ten other additional sources discussed in the text are shown as blue dots.
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