If you don't know about the
skill scanner site from jdegre, you should.
The bottom of that page is the
chipping optimizer.
This helps a lot with general chipping plans.
So far I have had a couple 10 ish ped esis pay 1 pec back with the ESI.
I did not record these levels like I should have, but this occurred at around 20k points, taking out 6 points. I think also around 10k skill its something like 12-13 pts(a difference from your formula), to maximize the esi, but those are ball parks, since I didnt record them like I should have..partly because I assumed it was a standard formula for all, and now I don't think that is the case.
There does seem to perhaps be a variable value on skills, some days the same TT will take out less other days more, the only factor I can seem to correlate to his is the attributes that change between those. For example:
When claiming my 82 ped kool kat repeatable, it has been in order:
47% of level at 93 into 94 - 1.24 pts per ped
[System]: You have gained 105.3018 experience in your Bioregenesis skill |
35% of level at 94 - .918 pts per ped
[System]: You have gained 75.3262 experience in your Bioregenesis skill |
30% of level at 94 - .815 pts per ped
[System]: You have gained 66.8452 experience in your Bioregenesis skill |
Note this one:
37% of level at 94 into 95 - .974 pts per ped
[System]: You have gained 79.9441 experience in your Bioregenesis skill |
Same tt value of reward.
The only difference is going on a small codex binge and getting a few more attributes between the last.
The points ended at 9974 bio on the 3rd claim listed and I claimed the 4th with a starting bio of 9976.
So there was only 2 pts of natural gain between the 25 hours it took to finish the 4th run, and the codex binge.
I purposefully went out and got 7 more stamina to see the effect for certain on the next round, and will post the gain here after that is done. It could be Intel, Psyche also affecting it.
The same thing I have noticed when chipping the point value out, it seems to change based on the core attributes you have.
So I am not sure that question can be accurately answered for your situation, based on any one else's formula at this point, but as you go along record some of em and maybe you can see the pattern when consideering attributes as well to nail it down. Ultimately with enough people providing some more defined samples it could be derived.
For reference, I have been chipping out skill with all my esis for over a year and I can loot many a day and Ive only recently noticed these kinds of value changes with the onset of me getting around to doing codex meta. Could be its been such a slow gain this whole time we have just never been able to see it as directly before. I had assumptions but not really the numbers to clearly show it like now with a fast consistant tt repeatable, and a quick bunch of attriibutes with codex.
And my attributes are 108,108,107,107,99.
