Go to the main PTI support page for a full description of the PTI dataset.
Download a sortable excel file containing all the sources observed by PTI between 1997-2008.
Download the entire PTI archive from 1997-2008 (417 MB file).
Click on each year below to view dates on which data were collected, to download data by date, and to download data for the entire year.
If you have any questions on PTI data, please contact NExScI User Support