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Fig. A.3

image

Best-fit results for PV diagrams from different weighting schemes. The results are presented for three weighting parameters of the merged data set and for the interferometric data. Within both series, the weighting schemes are natural, robust with a weight threshold of 1 and robust with a weight threshold of 0.1 (uniform); see Table A.1. The error bars are the standard deviations from the least-squares fits. The horizontal line in the velocity plot is the systemic velocity of the source IRAS 23033+5951.

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