Planetary resource extractor drop probabilities seem off.

[(PSN)gbravery1972]

I've been running the Distilling Extractor Prime on Zariman, Deimos and Saturn for quite a while - and the drops never match my expectations of randomness.
However, that was subjective - I've never logged them to try to confirm things, but it always felt like I obtained far more Voidgel Orb, Mutagen Samples and Detonite Ampules.

I decided about a week ago to track what I was seeing, which is in this table:

Date	Zariman	Deimos	Saturn
03/10/2022	12xVoidgel Orb	8xOrokin Cell	12xDetonite Ampule
03/10/2022	12xVoidgel Orb	12xMutagen Sample	12xDetonite Ampule
04/10/2022	1502xFerrite	12xMutagen Sample	2916xNano Spores
04/10/2022	1502xFerrite	12xMutagen Sample	2916xNano Spores
05/10/2022	2358xAlloy Plate	12xMutagen Sample	2882xNano Spores
05/10/2022	1186xFerrite	12xMutagen Sample	12xDetonite Ampule
06/10/2022	810xFerrite	12xMutagen Sample	12xDetonite Ampule
06/10/2022	12xVoidgel Orb	12xMutagen Sample	2692xNano Spores
07/10/2022	12xVoidgel Orb	2812xNano Spores	12xDetonite Ampule
07/10/2022	12xVoidgel Orb	12xMutagen Sample	12xDetonite Ampule
08/10/2022	12xVoidgel Orb	12xMutagen Sample	12xDetonite Ampule
08/10/2022	12xVoidgel Orb	12xMutagen Sample	12xDetonite Ampule
09/10/2022	12xVoidgel Orb	12xMutagen Sample	2946xNano Spores
09/10/2022	2088xAlloy Plate	8xOrokin Cell	12xDetonite Ampule
10/10/2022	12xVoidgel Orb	2438xNano Spores	12xDetonite Ampule
10/10/2022	12xVoidgel Orb	12xMutagen Sample	12xDetonite Ampule

Obviously, this is a small sample period (16 collections), but currently the data does seem to show a weird skew.

Planet	1	2	3	4	Total Excavations	Type 1	Type 2	Type 3	Type 4
Zariman	4	2	10	0	16	25%	13%	63%	0%
Deimos	2	12	2	0	16	13%	75%	13%	0%
Saturn	5	0	0	11	16	31%	0%	0%	69%

63% of my Zariman drops appear to be Voidgel Orbs
75% of my Deimos drops appear to be Mutagen Samples
69% of my Saturn drops appear to be Detonite Ampules

Of these, Deimos looks most accurate, with a skew towards the type 2 I'd expect.
Saturn looks the most incorrect, although the Zariman also doesn't look right.

FWIW, some of this is based on "Resource Rarity Rates" listed here:
https://warframe.fandom.com/wiki/Extractor
With the common, uncommon, rare distribution based on this:
https://warframe.fandom.com/wiki/Resources#Resources_By_Planet

As such, I'm not sure if this is a bug - or something else (misunderstanding the drop categories and probabilities).
I see a lot of "rarest" resources (Detonite, Mutagen and Voidgel) and what I'd expect (e.g. Orokin Cells, Neurodes, Plastids) aren't listed as rare seem to have a lower scarcity than "rare" - which doesn't make sense.
Either way, I thought I would try logging a ticket to see what was going on!

Thanks in advance.

[(PSN)gbravery1972]

So having run this for a while now, I don’t think this is a “bug”, it’s more related to what is rare and what isn’t, and how it is documented.

Planet	1	2	3	4	Total Excavations	Type 1	Type 2	Type 3	Type 4
Zariman	11	13	40	2	66	17%	20%	61%	3%
Deimos	11	49	4	2	66	17%	74%	6%	3%
Saturn	9	9	1	46	65	14%	14%	2%	71%

It looks like the Research Resources override the Uncommon Resource rates benefit of the Distilling Extractor Prime.
Or maybe these are mis-documented on the Fandom Wiki.

Either way, I suspect I need to take my empirical data there!