Notes. Individual columns denote: the upstream Mach number (M_u); the size of the CDL at the end of each simulation in scaled units (ℓ_end, see Sect. 2.4) and with respect to the transverse domain size Y (); the average shock area (left and right shock) with respect to the transverse domain size (s_sh/Y²); the driving efficiency or fraction of upstream kinetic energy density that passes the confining shocks of the CDL unthermalized (f_eff, Eq. (9)); the ratio of the CDL mean density to the upstream density (ρ_m/ρ_u, Eq. (6) and Fig. 2); the root mean square Mach number of the CDL, as well as its transverse (y-z-direction) and parallel (x-direction) components, and the ratio of the parallel and transverse component (M_rms, M_rms, ⊥, M_rms, ∥, M_rms, ∥/M_rms, ⊥, Eq. (7) and Fig. 2); the density variance – Mach number parameter b = σ(ρ)/(ρ_mM_rms), as well as its transverse (y-z-direction) and parallel (x-direction) components (b, b_⊥, b_∥, Eq. (17)); the CDL density variance σ(ρ) normalized by the CDL mean density (σ(ρ)/ρ_m). All columns except ℓ_end and contain averages over ℓ ∈  [11,12]. Values in parentheses in column f_eff are maximum values reached (see Fig. 3).