Is there a youtube video that can explain how to read this thing? I'm aware that higher peaks mean more network fees but what do the different color ranges mean. In this screenshot mousing over the color green.

What is being expressed by these things?

• Range: 12-15
• Size: 50MvB
• Sum: 65MvB

https://preview.redd.it/4o64rb50h00b1.png?width=1505&format=png&auto=webp&s=4def9ffe196093ff28aec82d2165e5c00f87d320