Dependences of PSD Δϕ, ΔΦ, relations Δϕ/ΔΦ, Δϕ/ΔΦ^∼ and energy transmission coefficients T_1,2 of waves 1, 2 on incidence angle ψ for silver layers 1, 3, two different wavelengths and TM (a, b, e, f), TE (c, d, g, h) polarizations of the incident wave. The values of parameters are: (a–d) λ = 292 nm, d_1,3 = 125 nm, d₂ = 19 nm; (e–h) λ = 650 nm, d_1,3 = 9 nm, d₂ = 171 nm. Figures b, d, f, h detail the data in figures a, c, e, g, respectively. The black horizontal dashed line in figures b, d characterizes equality to 1 of the corresponding quantities. Parameter ψ is used as the abscissa axis for all the graphs. Values of ψ (as Δϕ, ΔΦ, ΔΦ^∼) are given in the relative units of radians/π.