Our sample of thermal models for the various training and test purposes that contains 11×11 (121) distinct (T₀, γ) combinations. The fiducial TDR parameter combination is depicted as the green square. The rescaled $({\tilde{T}}_0,\tilde{\gamma })$ axes are also shown for context (see Section 3.1). This is a uniform grid in a parametrization that captures the well known degeneracy direction in the (T₀, γ) space. The gray-shaded area shows our prior range in this parameter space. Please refer to Appendix B for more details regarding the strategy used for this sampling.