Figure similar to Fig. 1 but for a 2D projection. This figure also includes contour plots that enclose different stream pole areas as a function of their pole fraction. Solid lines correspond to a 1σ contour level and dashed lines correspond to a 2σ level in this plot. For obtaining the fraction of poles per bin, we divided the parameter space in 384 bins of equal area and we distributed the statistical ‘weight’ of each stream pole equally among its uncertainty pole track.