Each file contains:

1. Tracked 512x512 Dopplergrams, one each minute bundled 
into a datacube of one days length specified by the filename 
"yymmdd" e.g. "020120" = 20th January 2002 = TrkV_020120.tar.gz

*******HELAS FREIBURG WORKSHOP PARTICIPANTS*********
There used to be a 'geom.fits' file for each day. These are 
an approximation to the geometry of the data and are no longer 
available. The correct geometries will be provided before/at 
the workshop. Please do not confuse them.
****************************************************