All reports of experimental-to-unstable-without-comment for the archive. The extended description of this tag is:
The previous version of this package had a distribution of "experimental", this version has a distribution of "unstable", and there's apparently no comment about the change of distributions.
Lintian looks in this version's changelog entry for the phrase "to unstable" or "to sid", with or without quotation marks around the distribution name.
This may indicate a mistake in setting the distribution and an accidental upload to unstable of a package intended for experimental.
Emitted (non-overridden): 1, overridden: 0, total: 1
The package names link to the relevant maintainer page and the corresponding report for the source package. The links go to the full maintainer report page, which includes info and experimental tags and overridden tags, rather than the default page that shows only errors and warnings.