But a table with one entry per device is just not how mesh networks operate. Zigbee and Z-Wave are not like Wi-Fi, with hub-and-spoke network paths, giving a single measure of LQI / RSSI.
Mesh networks are dynamic, with nodes choosing which of the routing peers they can see should carry a message on an instantaneous basis. You don’t get to choose, only monitor where the mesh may be weak.
The large number of lines on the spider diagram is showing the peers each node can see. Each node could be monitoring many peers - each with a different, changing LQI.
Why am I telling you this? Because so many folk are used to Wi-Fi networks, and try to use similar engineering and sysadmin with mesh. Mesh is different.