Curious about the distribution of listening posts and where to look for new ones

[Bob Dedication]

Hello Commanders.

Recently I started thinking about what it takes to find Generations Ships. I started reading about the listening posts and found the link on Canonn that lists all known locations in which they are found. I was curious then what the distribution of the listening posts is in space and if there is any obvious pattern or characteristic present in said distribution. I couldn't really google my way to this kind of processed data so I set out to do it myself.
Here's the process I followed in case anyone is interested:

1. Process the Canonn list in notepad and remove the body identifiers and leave just the system names. (remove/fix errors noted for certain entries)
   • Save into .csv format
2. Write a python script(attached as make_json.txt) to process each item in the list using the EliteBGS API, specifically the "Systems API" and output JSON data formatof the necessary data to map a point.
   • I had to run the output through a JSON formatter because it's all on one big line, then I copy/paste the correctly formatted data and save over it.
3. Using EDAstrometrics Custom Map Markers API, plot the results using a hosted JSON of the output.(attached as lp_systems.txt)

So now at least I can see what their 2D distribution is. I know of no other means to obtain something like this, so if you can think of another way/source, please let me know. Also, since only EDAstrometrics is capable of displaying custom markers (that I'm aware of) I only have their backgrounds to choose from. Heat-map it is.
The black lines are centered on Sol for reference.

The lower-right quadrant stands out as being a bit empty in comparison to the other three. Does anyone know what this is about? Is there something related to that part of space that would be some obvious reason to have a (relative)lack of listening posts? (lore-based, or otherwise?)
I wanted to take this a step further and see if there were any patterns in the type of systems/bodies where the LP's are found. Unfortunately it seems that the Bodies endpoint is not functional at the moment, so I was unable to do that.
I have no idea where to start with speculation aside from "Frontier hasn't decided to put any in that area yet", so that's kind of why I'm posting this thread.
Thoughts?

 

[Ian Doncaster]

Is there something related to that part of space that would be some obvious reason to have a (relative)lack of listening posts? (lore-based, or otherwise?)

Assuming that I'm guessing right about the scale and orientation of the map (~1500LY/side, SagA* above top), the majority of listening posts are found in or near inhabited systems, and there aren't many in that direction (plus you've got the Col 70 and similar permit locks over in that quadrant, so even if there were listening posts we wouldn't be able to see them)

 

[ylooC]

Just discovered this one ... .Charles Memorial... located in SADR REGION SECTOR PD-S B4-2 SYSTEM......"We of the Pilots Federation light this beacon on the fringes of human space for the fallen. For every fallen Commander we salute and hope you've found your place among the stars that we may see you again when we look to the skies. 07.