corroborated by Empirical data but you claimed someone said a hospital was vacant or there are multiple claims of vacant hospital which isn't empirical.
I'm assuming you have empirical data that corroborates his claims and that's what I'd like to see along side his observations.
I'm not trying to be argumentative. If this is a case of just mistakenly using the term instead of anecdotal evidence that's fine.
I'm just honestly looking for accurate corroboration in quantifiable and verifiable data.