If you like this, I have put up a bunch of the data that went into the analysis on the blog.  Using tableau public to drive interactive visualizations (which is meh).<p><a href="http:&#x2F;&#x2F;www.snow.ventures&#x2F;blog&#x2F;" rel="nofollow">http:&#x2F;&#x2F;www.snow.ventures&#x2F;blog&#x2F;</a><p>Open to feedback!