Histograms displaying the variations of the NLFF model quality as quantified by panel a: ⟨θ_J⟩; panel b: E_div/E; and panel c: |E_mix|/E_J, s. Relative differences between the bin1-based estimates and the bin2-(blue) and bin4-based (green) modeling are shown. The total number of considered (qualifying) NLFF models is indicated in black and is used as the basis to compute percentages. The total number of qualifying solutions at bin2 and bin4 are indicated in blue and green, respectively. Median values and median absolute deviation derived from the histograms are shown as dashed vertical lines and shaded bars, respectively.