The energies tabulated here and used in Figure 10 were calculated using $g_\mathrm{Na} = -8.8046108 \times 10^{-4}$, which differs from the correct value $g_\mathrm{Na} = -8.046108 \times 10^{-4}$. The energies are affected by less than 500 kHz even at the highest fields shown, and the differences are not visible on the scale of Figure 10. The energies used in Figures 11 and 12 used the correct value of $g_\mathrm{Na}$.
