Y (left) and age (right) distributions across 2000 MC instances, using relative PGPUC tracks with Z = 0.006. The upper panels show the Y and age distributions, while the lower panels show the corresponding CDFs. The best-fitting Gaussian CDFs are shown in the lower panels (as dashed blue lines), with their mean and standard deviation displayed in the title of the upper panels. Additionally, Gaussians crafted with these parameters are shown in the upper panels (as dashed blue lines). The lowest Y bin in the upper-left panel, which is not shown completely, has a normalized frequency of 37.