Occupation probability of the nascent CH⁺ product from the reaction of C⁺(²P) with H₂ in the ro-vibrationally excited state (v, J) = (2, 0) as function of the CH⁺(v′, J′) level energy and at a kinetic temperature T_kin = 1000 K. The SQM calculations of González-Lezana et al. (2026) are compared to the TDWP results of Faure et al. (2017) and to the simple extrapolation scheme (Extrap) defined by Eq. B.1. See text for details. The rotational ground states in the rotational manifold of v′ = 0, 1, 2 are labeled for clarity.