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You can see the last 7 days (2020.02.10-2020.02.17) in this blog post written by @penguinpablo:
Daily Steem Stats Report - Tuesday, February 18, 2020.
The blog post is showing both the Power Up and the Power Down amounts, and the difference between them.

The are not as interesting at the moment :)
Will do some probably in the future.

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