[neic]

I agree that a stepped line graph is better that a line graph, but since the data is discrete and not continuous a lollipop chart or maybe a bar chart would convey it better.

Monty from xiph.org learned me that: https://xiph.org/video/vid2.shtml @ 5:57

[JorgeGT]

Also a good option, although they seem a bit "busy" for my taste when Y values are very close: https://i.imgur.com/4ePNXbp.png