Hi @jacekw.dev, thanks for your contribution! Please keep in mind that analyses about social and behavior aspects of an open source project are not directly in the scope of utopian as per the guidelines. Nevertheless, you covered a broad range of tags in a remarkable piece of work to find the non-english community tags on Steem. I like the use of the Venn plots for the visualization of tag overlap! :)
The correlation of the payouts with the steem price was already mentioned in another comment. I think this was not changed to STEEM in the post yet? The corresponding steem value is available in the author_reward field as a multiple of 0.001 STEEM. But I think there may still be some variations due to changing reward pool size and vote activity. The most reliable metric in this regards would probably be to sum up the corresponding vote rshares...

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