The phrase "unpublished data" refers to information or research findings that have not been shared or made available to the public through publication in books or journals. Full definition
I also have two years of unpublished data on these stocks for 2008 and 2009. (valuewalk.com)
Abramson already has a hunch about one factor that will rise to the top, on the basis of unpublished data from his cohort, which started off in those FEMA trailers. (sciencemag.org)
Also, the team has additional, unpublished data showing the mass losses in West Antarctica have not only increased, but have tripled — at least from 2009 to 2012. (scientificamerican.com)