Resource at http://psddb.nerc-bas.ac.uk/
http://psddb.nerc-bas.ac.uk/data/access/

Resource at https://cdpp-archive.cnes.fr/
https://cdpp-archive.cnes.fr/user/cdpp/modules/1723

Resource at https://www.sgo.fi/
https://www.sgo.fi/Data/Pulsation/pulData.php