Top row: The Magneticum data as in Fig. 7, with the axes swapped. Solid lines show the best fits using either the least-squares method, fitting toward x (red) or y (blue), as well as the best fit using orthogonal distance regression (black). Bottom row: Cumulative histogram of the absolute offset between the predicted versus actual formation redshifts for the three best fit lines, as well as when drawing randomly from a normal distribution of formation redshifts with the mean and standard deviation calculated from the total sample of clusters (gray). The 1σ-bounds (68.27%) are shown as colored vertical lines.