Two-Gaussian model parameters used in Eq. (2) to fit folded light curves of eclipsing binaries. The sets of model parameters are, from top to bottom panels: a) C = 7.5 mag, μ₁ = 0, d₁ = 0.5 mag, σ₁ = 0.04, μ₂ = 0.5, d₂ = 0.35 mag, σ₂ = 0.04, A_Aell = 0 mag; b) same as top panel, but with an ellipsoidal component centered on μ₁ and with A_ell = 0.05 mag; c) same as top panel, but with σ₁=0.15 and σ₂ = 0.15. The green dashed horizontal lines in each panel indicate the value of the constant C in the equation. The red continuous horizontal line segments in the top and middle panels give the widths of each of the two Gaussians at 2% of their depths. The black dotted lines in the middle and bottom panels give the individual components of the two-Gaussian models (only the m = 0 components of the Gaussians in Eq. (2) are shown). The black solid thin lines show the resulting two-Gaussian models.