It's a proprietary list in his possession that he reserves right to share, so yes, it's his to do what he pleases.
You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more
It's a proprietary list in his possession that he reserves right to share, so yes, it's his to do what he pleases.