Sparklines, by default, don’t use the same scale within the same set. So, -69 and -100 appear to occur in the same general area below the axis. Similarly, 400, 269, 288, and 263 all seem to be ...

A sparkline is a simple line graph without annotations (like axes or units) intended to fit within the flow of text. They’re largely associated today with the statistician Edward Tufte ...