Awesome!

Thanks for the heads up LCU
Thargoid sensors (formerly known as Unknown Artefacts) only appear in the 150 LY Merope bubble, & prior to 2.4 at least, they only appeared in a shell surrounding Merope ranging from 135-150 LYs, you can find further information to this in the old Canonn thread no 10.
The sensors don't have to be galaxy wide as Thargoid incursions are mainly occurring within the 150 LY Merope bubble, with hyperdictions a little way out from that (~+60 LYs last I checked).
It all points to there 'base' or entry point (wormhole?) being Merope, seeing as NHSSs are far more prevalent in systems surrounding Merope (but not in, at all, curiously). As you travel outwards they become less & less common, they (in my experience) become much less common (on average) from about 100 LYs from Merope, & extremely hard to find after 140 LYs, the furthest I found is 147.88 LYs (which so far is the furthest 1 found).
Collecting data on hyperdictions (& NHSS) is primarily about simply seeing where they occur, once we have a sufficiently broad map (likely for NHSSs, not so much for hyperdictions as they are so rare!

), maybe we can also devise new theories or confirm established ones. Knowing where they are appearing, alone is still important.
I've had just 2 Hyperdictions since 2.4 The Return (both logged in the spread sheet via
LCUs EDMC plugin & thus in Cannon's 3D map), each 1 had 3 Thargoid ships!

. And I wasn't attacked in either.
Prior to The Return I had 1 batch of hyperdictions (4 in a row!! before I ditched the UA) which happened very shortly (or immediately after, I can't remember for sure now) I picked up and kept through hyperspacing a UA (Thargoid sensor). I had a long time previously picked up a UA, but unknown to me at the time, it had it dumped itself before I'd jumped, it had caused my cargo scoop to malfunction.
Your point on searching a grid around an area of hypderdictions is a fair one, & 1 which LCU was (& still is I think) willing to add neighbouring systems to his patrol route logging system for you.
But you need to narrow it down a little, I would suggest, initially at least, that you keep the area +/- 25 LYs vertically from your chosen search starting point (Tocopa right?). Even that would cover a very large number of systems, so maybe you would want to shrink the box? Anyway, I'll leave that & the depth down to you. Btw, it might be easier just to have a search bubble rather than a box, as you can then easily find out how many systems their are to search from your target system by just entering a distance using e.g. spansh.co.uk .Re number of hyperdictions, yea they're rare, so it makes it hard to pinpoint a small area. But yea you could be right to narrow it down before engaging in a search, I made that mistake in searching for new Thargoid structures

(see my sig link).
As for my theory, it's simply based on the locations of Thargoid sensors (x-UAs), Thargoid probes (x-UPs), Thargoid Structures (x-USs, now TSs) & NHSSs which are
all within 150 LYs of Merope, only the hyperdictions break the 150 LY rule, which is an interesting anomaly worth investigating, as I said

. So I don't have any links as such, bar the info in the 10th Canonn thread for T sensors & T probes, the 'All' Canonn 3D map (which you've already found) for NHSSs (& TSs) & Cannon TS map for TSs alone.
Maybe 'the source' is in Merope? And maybe what we should all(?) really being doing is flying in SC in Merope, outwards from the arrival star in huge distances & numbers to look for 'The source'?...........
No worries on re-starting the discussion

, try not to shout at anyone when they don't get what you're saying, or assume an insult when their probably wasn't

(IMO). I'll be back later, having a new electric meter installed, so no power for ~1hr, on my birthday!

lol.
PS No idea where the red Tgoids are.