In the meeting @Kakioka-JMA mentioned about the HAPI server.
There is a link "Server citation" in the HAPI data service https://hapi-server.org/servers/#server=INTERMAGNET,
which directs to INTERMAGNET Data - conditions of use.
Also there is a link to the same INTERMAGNET page in the VirES manual.
You can find it by searching the page
https://viresclient.readthedocs.io/en/latest/available_parameters.html
with the keyword "INTERMAGNET".
Perhaps many users are careful enough to go to the INTERMAGNET page
and read through all the conditions. But I doubt everyone does so,
because honestly I myself didn't when I first tried downloading INTERMAGNET data from VirES....
In the meeting @Kakioka-JMA mentioned about the HAPI server.
There is a link "Server citation" in the HAPI data service https://hapi-server.org/servers/#server=INTERMAGNET,
which directs to INTERMAGNET Data - conditions of use.
Also there is a link to the same INTERMAGNET page in the VirES manual.
You can find it by searching the page
https://viresclient.readthedocs.io/en/latest/available_parameters.html
with the keyword "INTERMAGNET".
Perhaps many users are careful enough to go to the INTERMAGNET page
and read through all the conditions. But I doubt everyone does so,
because honestly I myself didn't when I first tried downloading INTERMAGNET data from VirES....