v_ϕ vs [M/H] for the stars in the Solar cylinder (R = [7.2−9.2] kpc). Different colours correspond to different distances from the Galactic plane (darker colours correspond to the closest to the plane, yellow colours to the farthest distances), the range in kpc being reported at the lower-left corner of each plot. The vertical dashed line is at V_LSR and horizontal dashed line is at solar metallicity. Vertical error bars correspond to , where N is the number of stars in a given bin and σ_[M/H] is the standard deviation of the metallicity inside that bin.