(a) Gaussian-fit centroid energies and peak fluxes of H⁺ and H⁻ at each time step are shown. H⁺ and H⁻ data are represented by solid blue and orange points, respectively. (b) The gray circles show the H⁺/H⁻ flux ratio at the central energy of each bin, and the vertical error bars represent the quartile-based bounds. Vertical dashed gray lines indicate the bin boundaries, while the dashed gray line shows the overall trend of the H⁺∕H⁻ flux ratio. (c) Percentage distribution of H⁺∕H⁻ flux ratios. The most frequently occurring ratio is 4.88. The log-normal fit to this distribution is shown by the red curve.