σ_axi^P/σ_sph^P − 1 conditioned on the observed axis ratio q′ for the oblate intrinsic shape distribution q ∈ 𝒩[μ = 0.74, σ = 0.08] and the prolate 1/q ∈ 𝒩[μ = 0.84, σ = 0.04]. For this test, the velocity dispersion used to characterize the truncated SIS profile is set to be 200 km/s, and the half-light radius used to characterize the Jaffe profile is set to be 7.5 kpc. The number of draws of the intrinsic axis ratio is 2500, while each data point is projected once assuming isotropic inclination angles. The discreteness of the curve is due to the binning from the 2D histogram of q′ vs. σ_axi^P/σ_sph^P − 1. The solid dots are the median of the conditional probability P(σ_axi^P/σ_sph^P − 1|q′), while the shaded area is the 1σ interval.