Observed velocity dispersion map in Voronoi bins (first panel), the best-fit dynamical model with a power-law mass model, constant β anisotropy profile, and oblate shape (second panel), the normalized residual for the best-fit dynamical model (third panel), and the distribution of the normalized residual (orange, fourth panel). The reduced χ² quantity is with degrees of freedom ν = 41. The gray dashed line in the fourth panel shows a normal distribution expected for residuals from a perfect model to the data with Gaussian noise. The residual distribution for 41 points is similar to this Gaussian distribution.