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Fig. 3

image

Inclination and position angle of the 11 free tilted rings used for deconvolving the 21 cm data. The open triangles (in black in the online version), connected by a dashed line, shows the value using the shape minimization method, the open squares (in red in the online version), connected by a continuous line, are relative to the v-mean minimization method (see Appendix A for details). The uncertainties are computed by varying one parameter of one free ring at a time around the minimal solution until the χ2 of the tilted ring model increases by 2%.

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