Why does the CPU Core temps from node-exporter plugin not match the dashboard?

[mope]

I'm trying to build a Grafana dashboard for the first time using prometheus as a scaper but wondering why some figures don't match up.

Here are my thermal sensors using OPNsense bare metal install on a Protectli VP4630.


These are quite different to the data in prometheus from the node_exporter plugin. Why is that?