Time-distance plots for the smallest and the largest incident angle, α₁ and α₄, along the three different paths (path 1, path 2, and path 3), and for three different CH densities, ρ_CH = 0.1, ρ_CH = 0.3, and ρ_CH = 0.5. The amplitudes of the initial density profile are ρ_IAE = 1.1 and ρ_IAD = 0.8, the initial widths are w_E = 0.1, and w_D = 0.2, and we used a constant CH density, ρ_CH = 0.1.