Circular velocity curve obtained from the MCMC. Grey dashed lines have been plotted to indicate the position of each radial bin. In black (with circles) we show the circular velocities as obtained in this paper where the error bars correspond to the 16th and 84th percentile of the circular velocity posterior distribution in a particular bin. We adopted R₀ = 8.277 kpc to convert the adimensional coordinate x into Galactocentric distance R.