All reports of r-data-without-readme-source for the archive. The extended description of this tag is:
Many modules packaged for the R Project for Statistical Computing contain data files with names as *.rda, *.Rda, *.rdata, *.Rdata, etc.
When such files exist, the FTP masters expect them to be explained in debian/README.source, which this package is missing.
Please add a README.source documenting the origins of these files.
Refer to https://lists.debian.org/debian-devel/2013/09/msg00332.html for details.
This tag has not been emitted in any package tested by Lintian.