D-term recovery results of blinded GRMHD synthetic data from each polarized imaging method (columns) and year (rows). The x-axis of each plot is the true leakage, and the y-axis is the measured leakage. Perfect recovery means that all points should live on the y = x line. The total L₂ difference between the ground truth and recovered leakage averaged over all stations is shown in the bottom right of each plot. For the Bayesian methods, we also show a χ² value computed as the square difference between the true value and the recovered leakage divided by the variance of the posterior estimate. For the Bayesian methods, the points denote the posterior median leakage, and error bars show the 95% credible interval about the median.