Detail of central temperature for three progenitor models for both default (solid green lines) and relativistic (dashed red lines) screening rates. Top left: 52 M_⊙, top right: 58 M_⊙, bottom left: 64 M_⊙, and bottom right: 70 M_⊙. The relativistic screening case has been offset by 6.82 yr for the 52 M_⊙ model and by −2.79 × 10⁴ s for the 70 M_⊙ model so that both evolution plots can fall within the same range.