Fig. 6
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Statistical line centroid errors for all PNe in our sample. Left panel: distribution of the statistical line centroid errors. Right panel: line centroid error as a function of wavelength. The UVB, VIS and NIR ranges are colour coded; the black horizontal lines show the mean statistical error of 0.046, 0.042, and 0.094 Å, respectively. The GMOS/GNIRS data for DdDm-1 follow the same colour-coding and are not distinguished in this plot.
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