Extended Data Fig. 7: The evolution of the ratio of populations of H(n=4)/H(n=3) at three snapshots of each flare simulation.
From: Spatial variation of energy transport mechanisms within solar flare ribbons

Colour represents each simulation, and the grey-shaded regions are the pre-flare stratification. Panels in the top row are the NTE experiments, the middle row shows experiments involving non-thermal protons, and the bottom row panels are the TC experiments.