Distribution of high probability narrow component members (> 50%) in (a), (ϕ₁, ϕ₂), (b), (ϕ₁, ) and (c), (ϕ₁, μ_ϕ2). The resulting binned tracks and their 1σ uncertainty ranges are indicated in red. The RV-NC-stars are overplotted in blue, together with their measurement uncertainties (which are too small to be seen). Most RV-NC-stars follow the tracks roughly within the 1σ range, except for the RV-NC-star Jhelum2_14 located at ϕ₁ ≈ 22 deg.