Fig. 5.

Flowchart for the calculation of ${[{}^1{\mathrm{O}}_2]}_{\mathrm{rx}}$ based on initial conditions of ${[S_0]}_0$ and $\phi (d)$. The initial oxygen concentration ${[{}^3{\mathrm{O}}_2]}_0$ is chosen to be $40\mu \mathrm{M}$ for most of the data analysis except for the individual fits for Fig. 3, where ${[{}^3{\mathrm{O}}_2]}_0=50\mu \mathrm{M}$.