Magnetic field magnitude distribution inside toroidal flux ropes with practically elliptic cross sections. The closed lines are cross sections of magnetic surfaces. The values of free parameters are a) M = 10, d₀ = 1, e₁ = 1.096, d₂ = 1.754, e₃ = 0.918, d₄ = 1.125, e₅ = 0.999, d₆ = 0.730, e₇ = 1.248, d₈ = 1.111, e₉ = 0.656, and d₁₀ = 1.601; b)M = 10, d₀ = 1, e₁ = −0.0641, d₂ = 0.0972, e₃ = 1.057, d₄ = 0.355, e₅ = 0.0442, d₆ = 0.1477, e₇ = 0.541, d₈ = −0.01687, e₉ = −0.769, and d₁₀ = 1.202. The other coefficients are (numerical) zero.