Échelle diagram of Rogue with the fitted individual frequencies matched to the modes of the best-fitting model. The orange diamonds, green upwards, and blue downwards triangles depict the ℓ = 0, ℓ = 1, and ℓ = 2 modes, respectively. The cubic term of the surface correction by Ball & Gizon (2014) has been applied to the model modes, with a surface correction coefficient of a₃ = −1.5554 ⋅ 10⁻⁷. The size of the model modes is scaled related to the inverse of their respective inertia. An offset has been applied to the x-axis for improved visualisation to avoid wrapping of the radial ridge.