Authorearnings.com: sales rank to daily sales infographic still useful?

[Quantum]

This infographic came out back in March 2016 and shortly thereafter I started using it to eyeball sales rank to daily book sales.

Do you think it's still accurate enough to be useful?

(Side note: I wonder if Howey's going to come out with another report or if he's done with his pro bono work?)

http://authorearnings.com/wp-content/...