This might be hard to do depending on your records, but maybe check other earnings around other sporting events? It might be gambling winnings, and while it probably can't prove it, it might yield a trend.

It doesn't have to be major sporting events either like the super bowl, it might just be general sports gambling, which would be crazy fun and interesting to see! So maybe dig through records around other sporting events!

How do you think he made it to the hall of fame?

For the lols: it's not human. It's iron... human (OK that was bad)

For the actual answer: humans are amazing endurance creatures. We evolved away our hair and added more sweat glans to be way better at endurance. It seems impossible, but biologically we are actually designed to do something like that. There's some debate as to why, but humans are one of the top endurance creates on the plant.

From a data presentation standpoint: including this shows what he's using them for. The histogram is really good, showing the use of the pencils is amazing with the histogram above them, and then adding this picture shows what they're being used for. And it's easy to read and understand. This is textbook data presentation.

This is awesome: we get to see the pencils they were using, we get to see the amount they used, we get a reference to know how big the pencils are before use.

The only thing we're missing: some of your toddlers art. That would make this chef's kiss