Math of Steem - how much curation does DTube pay out?

It doesn't seem to be very well known that Hive account@dtube has its own curation system laying on top of the basic Steem curation system. They take 25% of author rewards as a beneficiary reward and then distribute some percentage of it to voters on DTube posts through transfers from the Hive account@dtube-rewards account. As far as I know this isn't documented anywhere, and I had no concept of how much of the beneficiary reward they were redistributing, so I thought I would look quickly, and it would make an easy post for a Sunday.

The first post I looked at was this one by Hive account@art.life, which gave up 18.556 STU to its beneficiary reward. Converting that to Steem at the current feed price of $1.55 we get 11.97 Steem, and the curation algorithm paid out 7.276 Steem, or 60.8%.

Then I looked at this post by Hive account@dronemania, which gave up 10.8075 STU = 6.972 STEEM to its beneficiary, and paid out 2.289 Steem, or 32.8%.

But wait: Hive account@dtube voted both of those posts, and DTube doesn't pay out curation to itself. So I looked for some posts that didn't have DTube votes, and picked out these three:

This post by Hive account@rainbowboomx paid out 0.435 STU, 0.281 Steem, and curation paid out .28 Steem, 99.6%.

This post by Hive account@snowynight paid out 0.168 STU, 0.108 Steem, and curation paid out 0.099 Steem, 91.1%.

This post by Hive account@tonysayers33 paid out 1.864 STU, 1.202 Steem, and curation paid out 1.178 Steem, 97.9%.

All of those numbers are close enough to 100% that the difference could be accounted for by the several iterations of rounding error - Steem in the beneficiary payment, DTube in the curation algorithm, me in the analysis. So I think it's very likely that DTube pays out 100% of their beneficiary rewards to curators, except for those that would have gone to the Hive account@dtube account. In any case the percentage is at least in the high 90s.

This means that total curation on dTube posts is in the range of 40%, for those of you looking for higher curation percentages. Even better, the dTube portion pays out in liquid Steem rather than SP.

I still don't know how their curation algorithm works, other than that it's very different from the one operating natively on the blockchain. I might look into that later.