Nivo ResponsiveLine data different thatn tooltip values

Question

I have two Arrays with x and y values. data - has a percentage associated with each month {'x': month, 'y': percent} ... dataTotals - has a frequency value associated with each month {'x': month, 'y': freq} ... I want to use data to plot the graph and I've been able to do this successfully so far. What I would like is to have the corresponding freq value for each month shown in the tooltip. Right now I'm only able to get the percentage values in the tooltip

. . .

<ResponsiveLine
  data={data}
  sliceTooltip={({ slice }) => {
    return (
      <div>
        {slice.points[0].data.yStacked}
      </div>
    );}}

. . .
This works correctly to get percentage values in the tooltip. However, I'm unsure how to get the dataTotals value 'slice by slice'