Hey Kamai,
Indeed, you're correct. Those factor would influence the final results. To get a "clean" data as much as possible, I also used an alt which was positioned at the spots mentioned and I would only collect data (on both chars) whenever the energy of repose is on. Further, I did the data collection during the week days.
With that said, then there's still the 5% extra drop rate due to the Energy of Repose. However, it seems to me that the 5%ER acts on top of the actual drop rate of the item. For example, is an item has 10% of drop chance, with ER it won't become 15%, but rather 5% on top of the 10% (less than 11% in total). That would be negligible at the end. But on any event, I added that uncertainty buffer to the results:
So, in summary:
Kselids -- 2.5% to 5%
Ghosts -- 5% to 8%
Idian Depths -- 10% to 15%
A new edition: Worn Skeletons in Katalam - Could be anywhere between 8% to 12%! (not included in the video)
Well, it's hard to give a precise number, but this might be in the right direction .
Cheers,
Poela, the Elyos chanter.