Variation in predictability index with the flattening of the halo, qz, with a dark halo orientation fixed to φ = 90. A higher value means a better shadowing, thus a better predictability. Left: L-orbits, close to the disc orbits. Right: H-orbits, initial conditions with higher z. The inset zooms in some flattening values leading to very low predictabilities for the blue orbits with high initial velocities, coincident with the chaotic nature of the orbits with the flattening parameter values seen in Fig. 7. The orbit with the lowest predictability is HC2 when qz = 1.32.
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