Mass distribution of Y_e as the ejecta passes through 10 GK. The top two panels show the distribution of Y_e as a function of latitude, with zero representing the plane of the disk. The bottom panel shows the fractional mass distribution for the simulation with (pink) and without (teal) oscillations. The outflow in the simulation with FFCs shifts to lower Y_e, especially at higher latitudes, indicating enhanced neutron richness in the ejecta.