Access to the public part of the GFZ-1 data is available via anonymous ftp. The ISDC ftp-server has the following address:

ftp://isdcftp.gfz.de/gfz-1/

The GFZ-1 data base on this server has the following directory structure:

ORBIT/Product Section/

Product Sections:

• PSO  = Precise Science Orbit
• TLE = Two-Line Elements (under preparation)