Mock surface brightness, mock kinematic maps, and best-fitting model for Au-23-85-50. From top to bottom: Logarithmic normalised surface brightness logΣ, mean velocity V, velocity dispersion σ, third-order Gauss-Hermite coefficient h₃, and fourth-order Gauss-Hermite coefficient h₄. From left to right: Mock observations, model fittings, and residuals. The residuals represent the relative deviations of the surface brightness and the standardised residuals of the kinematics.