Net rate of change (arbitrary units) of acetone abundance as a function of time simulated by MAGICKAL. Here an updated version of MAGICKAL used in (Belloche et al. 2022) is applied. The three rows from top to bottom correspond to the simulations with a fast (5 × 10⁴ yr), medium (2 × 10⁵ yr), and slow (1 × 10⁶ yr) warm-up stage, respectively. In each of the left panels, the vertical dotted line indicate the start of the warm-up stage. The panels on the right side show the net rates of change that are normalized and integrated over each temperature range.