I was playing around with scraping an html table for number values, converting them to 100 based per column, then use a simple css width percentage to add a horizontal bar graph to each cell.

Mileage will vary but maybe I'll get around to perfecting it as a plugin that is robust enough. Of course this was written in typescript :).

Working version
http://jsfiddle.net/TheDev6/62ZXS/

What it looks like..