For understanding of the logical layout of Voyager data, It is necessary to understand the naming conventions. A more complete description is given in data.html. The files name are of the form ha , key vgr
sc_type_date1_date2_suf
sc is the space craft name v1 or v2
type is the type of data
date1 the date of the first data
date2 the date of the first data
suf any processing such as conversion to Java format b
Where the major fields are separated by '_'. The time field are further subdivided, it to sub fields separated by '.'s. These fields are year, day, hour. In the time field, not all fields are required Also if the date1 == date2, date2 may be omitted. If the file is compressed, then a .Z or .gz is suffixed as per the normal convention. For the most part the file names are generated by a procedure 'rename' which can recognize most of the file types, as well as find the starting and stopping time. IDL can also recognize the ASCII formats, and read them in assigning the correct names to each of the fields in the file.

To further understand what a file is, it is important to note what directory it is in. Key file, that are in a s sub directory of name 'ha' are hourly averages in the key format. If they are not in subdirectory of some average, they they are parameters of individual spectra. (This is sometimes violated in test directorys such as www and Java.

The environmental variables also control where data is kept. For the "official data", the environmental "vgrDATA" gives the starting point. from there the subdirectories for each space craft, their data types etc.
directory tree for Voyager Data
space craftdata type
/nfs/plasma/d2/vgr/data
const
v1 edr q 1990
1991
1992
1993
1994
1995
1996
f 1990
1991
1992
1993
1994
1995
1996
sedr
shortsedr
sum
vgr /nfs/plasma/dl/vgr/DATA_finial/v1/vgr
ha /nfs/plasma/dl/vgr/DATA_finial/v1/ha
log
key
jwb
key /nfs/plasma/dl/vgr/DATA_finial/v1/key
vgr_low.time.resolution
v2 edr q 1990
1991
1992
1993
1994
1995
1996
f 1990
1991
1992
1993
1994
1995
1996
sedr
shortsedr
sum
vgr /nfs/plasma/df/vgr/DATA_prelim/v2/vgr
ha /nfs/plasma/dt/vgr/DATA_finial/v2/ha
key
jwb
key
vgr_low.time.resolution /plas7/d2/vgr/data/vgr

Besides These official, are the many filin files that are necessary to get these. The "Official Production" converting summary tapes, filling in with edr where summary tapes are not available, to mission or vgr data.. The MIT tapes were used where possible, then GSFC summarys were used. For a short time after the Neptune encounter, we only go an hour a day from JPL. Most of this was filled in, but not all of it. There was also a short period before Neptune when be had to get fillins. Then these vgr tapes were run in production to produce the finial processed data. It is necessary to keep a list of the original datasets to completely document the "Official Production". the code for the is in the directory ~vgr/src/prd. The scripts that run the production are run.All, which in turn call "run.all.vgr" to make the mission tapes, and "run.mission.PRD" to do the finial production.