Revising DeltaZ_H

Using the values obtained from the previous fit:

• $\beta_{\mathrm{He}}$ = 0.41
• $\beta_{\mathrm{H}}$ = 0.82
• $\Delta z_{\mathrm{He}}$ = 0.13
• Varying $\Delta z_{\mathrm{H}}$

UVB Rates

Trajectories for $T_0$ and $\tau_{eff}$

Fitting to $T_0$ and $\tau_{eff}$