WBD data were not obtained continuously throughout the orbit, but rather in variable length tracks ranging from about 0.5 to 7 hours due to its high time resolution and thus high data volume. The tracks were obtained through direct real time downlink to a ground station at either NASA's Deep Space Network or the Czech Republic Panska Ves Observatory, or through onboard recording in the Burst Mode 2 (BM2) mode. The WBD science data coverage files in ASCII format provided here provide the start and stop times of the tracks, the Cluster spacecraft from which the data were being obtained, the mode of the WBD insrument during the time period, and a flag for when the data were obtained in BM2 mode. There will be a Coverage file in text format for every four months of the mission, including commissioning. The format of the files is as shown in the link below.
These WBD data coverage files are also available from the Cluster Science Archive (CSA) by going to the home page of the CSA Cluster Science Archive, clicking on the "Documentation" item in the pull down menu for the "Archive" tab, then clicking on "Instrument Team Documenation" under "Cluster Instrumentation", scrolling down to "WBD" and then down to "Coverage".
The WBD science data coverage files in spreadsheet/columnar format are only available up to early 2009. These files provide information on: 1) the start and end times of each track for each spacecraft; 2) the WBD mode; 3) the science target for the track; 4) the predicted magnetospheric region during the track; 5) whether the track was a part of a planned Multi-Spacecraft Operation (MSO) with the Deep Space Network; 6) whether the Electron Drift Instrument (EDI) was active and its level of interference in WBD data; and 7) whether the ASPOC experiment was actively affecting the spacecraft potential during the track. We encourage everyone to use the ASCII files for purposes of searching for WBD data in specific modes and/or at specific times.