"Hourly" charts explained
I've seen some confusion about what we refer to as the hourly charts, so I'll explain how they work.
The hourly charts are not actually the bestselling products from the last hour. What it really is, is the bestselling products from the last 24 hours, but updated hourly. This is why things don't fly around the hourly charts all the time, but it instead changes gradually.
The green and red arrows also work based on the last 24 hours. The arrows have no direct correlation to sales, but instead illustrates the change in positions relative to their ranking 24 hours ago.