68% and 95% parameter constraint contours from one example of the test dataset using FullB-SeResNet and Full-FCN. The diagonal plots are the marginalised parameter constraints, and the dashed black lines stand for the true values reported in Table 6. The vertical dashed red and blue lines represent the 1σ for the marginals using FullB-SeResNet and Full-FCN, respectively. We derived these posterior distributions using GetDist (Lewis 2019).