Distribution of the respective values of τ_inst-estimates for a set of 10⁴ ICs in the range 4.5AU ≤ a₂ ≤ 7.0AU. Straight black lines highlight the exact positions of the lowest-order MMRs identifiable, and the yellow one indicates the nominal position of the real system (near the 7/1 MMR). The white squares represent the disruption times t_dis as obtained by Cincotta et al. (2021b) from direct integrations of 374 ICs on almost the same segment (there, the grid size in a₂ was ~ 6.5 × 10⁻³ AU).