How to access files from a Data Center
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IVS makes data files freely available to those who wish to analyze 
the data and produce results. 

The IVS Operation Centers submit data files from daily intensive sessions 
and from 24-hour sessions to IVS Data Centers. 

IVS Analysis Centers submit analysis product files to the IVS Data Centers.

The three primary IVS Data Centers mirror each other so that all data files 
are available from any Data Center within a few hours of their submission.

IVS data files may be accessed via anonymous ftp at any of the Data Centers 
listed below.

         CDDISA:   ftp cddisa.gsfc.nasa.gov
                   user ftp
                   password <your e-mail address>
                   cd vlbi

         OPAR:     ftp ivsopar.obspm.fr
                   user ftp
                   password <your e-mail address>
                   cd vlbi

         BKG:      ftp ftp.leipzig.ifag.de
                   user ftp
                   password <your e-mail address>
                   cd vlbi/vlbi_center