There's something awry about the "fewer code execution errors" graph: I count an odd number of columns when they ought to be in pairs.

Clicking on the graph to go to plot.ly and viewing its "data" tab, it looks like there's a blank X value for:

         text                                                                           y                   x
    0    bucketed_success_rate: -0.02<br>pct: 0.1<br>`Interviewer Would Hire`: False    0.0987654320987654

You might want to think about upping the contrast and/or font weight too. It's nearly unreadable for me and I have pretty good vision.

Edit - it looks way better if I disable Open Sans. It might just be a font issue with Chrome or Windows.

Order has been restored!