How to make graph and emphasize one value in X-axis?

[amira_ndi]

Dear all!
I would like to make a graph which emphasizes one value in X-axis like this

I have data here DATA

I am a beginner and still needs suggestion what kind of packages that I have to perform to make data like this?
I really appreciate your help.
Please answer!

Best

[chloe_kasel]

Try adding a geom_vline(xintercept = 80). This adds lines at specific x values. You can change the transparency of the lines as well by adding alpha = 0.5. You would then have to fill in between the lines with color. I would look at theme() and try messing with the panel.background or panel.grid to change the color of the background and grid lines. Hope this helps at least a little!

[amira_ndi]

thank you for helping me