The relevant measurements are written to a public grafana instance (readonly access).
Now I want them to be included into queries/panels within my private grafana instance.
Is this possible??? (Without copying the data)
Please help! Thanks a lot!
can you expand on this queston? Maybe include some steps to reproduce or screenshots/screencasts? 
Thanks for your reply! But as pointed out here https://github.com/grafana/grafana/discussions/52692 , it doesn’t seem to be possible at the moment