How to draw three y axis using the gnuplot at the same x axis in one graph?

As mentioned in my title, I need to draw more than two y axis for the same x-axis of some specific scale. Can someone can tell me how to do this?

Does gnuplot support multiple Y axes on a single plot?

5.9 Does gnuplot support multiple y-axes on a single plot? Yes.

How do I make a second y-axis and assign particular data sets to it?

Double-click on either axis to open the Format Axes dialog and go to the Right Y axis tab. Use the roll-down menu to select a right Y axis format. Then, double-click on any data point to open the Format Graph dialog. Select a data set and use the check box to assign it to the right axis.

In gnuplot only two differently scaled y-axis are possible.
But you could either