Plot three values x-axis [closed]

I have a data frame and I would like to plot as show the Figure 1.

• My data frame has three column.
• Each line must be plot on the same X-axis (three values by X-axis, as show the Figure 1).

• It has a line that passing between the middle values (in this case, line [1, V2], [2, V2], [3, V2]... [n, V2].

Figure 1.

Figure 1 is only an example. I know the values are wrong in the plot.