Fig. D.1

Influence of observational properties and choices on the resulting value of the outflow force, using M1 (νmax) on Elias 29, IRS 54, HH 46 and IRAS4A, which all have clear, isolated outflows. See text for description of each category. It follows that these observational properties and choices in the analysis procedure affect the outflow force up to a factor of 4–5.
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