Plot of all the velocity ellipsoid elements σ_ij in the plane (O,R,z). The axes are in [kms^-1] for the velocity dispersion (y-axes) and in [kpc] for the Galactocentric distances (x-axes). The axis labels are omitted in favour of a small indicator of the element we are considering in the lower left part of the plot. In order to visualize different z distance ranges, we use a gradation of increasing red for the plot lines from the upper row of plot, z ∈]0.3,0.5]   kpc down to the bottom row for the range z ∈] − 0.5,0.3]kpc: the first row of the upper 6 panels refers to z ∈]0.3,0.5]kpc, the second to z ∈]0.1,0.3]kpc, the central to the Galactic plane z ∈] − 0.1,0.1]kpc. The fourth row includes panels for z ∈] − 0.1, − 0.3]kpc and the fifth one to z ∈] − 0.3, − 0.5]kpc.