Stellar mass as a function of time. Evolution is tracked as the logarithm of the time before final collapse and is shown after the first pulse. Shown is the mass below the escape velocity. The solid green line is for the default screening model, while the dashed red line is for the relativistic screening model. Top left: 70 M_⊙, top right: 76 M_⊙, bottom left: 88 M_⊙, and bottom right: 89 M_⊙.