Comparison of the evolution of the white dwarf defined by the mass above the density threshold ( ) to the plume evolution defined by the minimum flame density (ρ _min). The left panel presents the evolution of (solid) and ρ _min (dotted) as a function of simulation time for realizations 2 (blue), 10 (red), and 18 (green) showing the expansion rate of the WD and the plume rise time with DDT times (circles) associated with each DDT density emphasized. is defined as the total mass with density greater than 2 × 10 ⁷ g cm ⁻³ and ρ _min is defined as the minimum density at which the flame is burning material. The translation into as a function of ρ _min is shown in the right panel for comparison to M _NSE as a function of ρ _DDT shown in Figure  7. We also highlight the fiducial DDT density as black squares. These plots emphasize the importance of the rate of expansion of the WD and the plume rise time as a function of density in determining the relation between the NSE yield and DDT density. Realization 2 produces NSE yields that are close to the average while realizations 10 and 18 produce the lowest and highest yields, respectively.