Update Data Of Existing Highstock Graph Using Only JavaScript

I'm editing a site and I don't have access to the original code, all I can do is append code to the end of it. I do not have access to PHP (I assume I don't need that anyway). This

Solution 1:

In the Chrome console on the /Meter/Consumption page you should be able to paste in the following and it should highlight the highest 4 values: http://pastebin.com/4RzYXcBh