Energy transport in the 3D simulation F0. Top: Dominant equilibrium between Braginskii heat, enthalpy, and gravitational energy fluxes, Eqs. (24), (26), and (28), in the energy flux budget, Eq. (20), at the quasi steady state. Bottom: Subdominant perturbed energy fluxes, Eqs. (25), (27), and (29). Dashed lines are indicative of negative quantities whose sign has been switched for the purpose of visualisation.