Today I learned that I was the last person on the internet to know that you can manipulate i.imgur.com urls so that they point back at the original post with a description, title, author information, etc.<p><pre><code> http://i.imgur.com/<magic code>.png
</code></pre>
---><p><pre><code> http://imgur.com/gallery/<magic code>
</code></pre>
In this case, the gallery page has a link to a google docs spreadsheet which was used to generate the graphic.<p>I don't see citation of the source of the numeric data (but I didn't check all the links on the gallery page).