Author rewards

Hello Guys,
last week I created a post to test the upvote profitability from some upvote bots. My conclusion is, that the best upvote Bot is tipu. It is the most profitability bot for vote buyers and delegators because of the curation reward, which is also is paid out by tipu. I found out, that I haven't received only 0.006 SBD for my last post. Half a year ago it was nearly the same amount as the Steem power you get