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Data Storage:
Data files are normally available online for at least 28 days, after which
they will be deleted. Data are not archived prior to deletion and are therefore
unrecoverable. Users are encouraged to download data as soon as possible.
File Naming (DAT files):
Each file is named using a MTSUDOYS.DAT format. MTSU is the station ID, DOY is the day of year, S is the hour of the day (A through X)
based on GPS time (not local time).
File Naming (RINEX files):
Files are named as described above for DAT files, except
for the file extension: in place of "DAT" are standard RINEX file
extensions.
To download
data files:
Select the link
"DAT, RINEX" above. You will see a "File Download - security
Warning" window pop up, asking you if you want to run the FTP batch file.
Click Run and you will be taken to the login page for the base files FTP
site. use the following login information to access the site:
username: gpsguest
password: guest
You are now logged in to the base files FTP site and can
access files to download.
Click on either DAT or RINEX, depending
on the type of file you wish to download. Navigate to the appropriate subfolder; subfolders are arranged by year/day of year/site (mtsu). All available files will be displayed. Right click the name of
the desired file and select "Save target as..." to download the file
to your computer.
Important
note:
Unless the system is
experiencing technical difficulties, the last file listed should contain
data for the most recent complete GMT hour and the current
date. Because your computer may cache and then display an earlier
version of the window, it may not show the most recent files available. If
the file you seek is more recent than the bottom file in the "ftp"
window, the listing can be updated by refreshing the
window.
Comments:
If you have any comments please E-mail
them to
Diana Cooksey
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