Data produced from the HydroGNSS mission is owned by ESA but is administered by SSTL.
To apply for access to this data, please register here.
For Python code samples for downloading and reading PDGS products, see https://github.com/HydroGNSS-SSTL/Python_Samples
For Matlab code samples for downloading and reading PDGS products, see https://github.com/HydroGNSS-SSTL/Matlab_Samples