Leading-edge analysis of MF desorption. Top: pure MF multilayer desorption. Bottom: MF deposited on crystalline CH₃OH (labeled MeOH in the panels). Gray curves show the calibrated desorption rate, the highlighted regions indicate the leading-edge intervals used for Arrhenius fitting, and the dashed curves show the Arrhenius model using the derived binding energy with the prefactor fixed to ν(T_rep). The coverage-independent leading edge observed for MF on crystalline methanol indicates multilayer-like desorption behavior.