ftp://ftp.gfz-potsdam.de/pub/home/st/GEOFON/OnDB/gifs/PUL/  direct

[DIR]2008/  direct  3106+ twin directories
[DIR]2007/  direct  3228+ twin directories
[DIR]2006/  direct  3481+ twin directories
[DIR]2005/  direct  3412+ twin directories
[DIR]2009/  direct  2836+ twin directories