This page contains meta-information about SWERB data. Any notes or comments about the data that don't conveniently fit anywhere else (e.g. the Monitoring Guide, or the Tech Specs) will be recorded here.

• All GPS data through 02 May 2000 were affected by Selective Availability.

• Data between May and August 2019 are problematic. The European Union's Galileo satellites were not performing as intended (the related EU agency was not very transparent about this, so there is only limited official documentation that this even occurred), and the accuracy of our data suffered. We've attached the file 2019-gps-issues.pdf to this page, in which we investigate and document the issues in our 2019 data.

• (From the documentation of the SWERB_DATA table) Through the end of 2022, the observers' protocol for recording [the distance between themselves and either a lone male, other group, or predator] was either poorly defined or poorly adhered-to. (It is unclear which.) Distances were occasionally recorded but usually not. It is unclear what decisions were made at the time that might decide whether or not to record this distance. To avoid fallacious assumptions about the nature of the data, all distances recorded before 01 Jan 2023 have been manually set to NULL. In case someone wants to use the SWERB_DATA_HISTORY table to retrieve the once-present distances, they were set to NULL at 2023-03-22 00:20:44.206126+03 (Nairobi time).