Interesting that both sama and pg have both used the phrase "spectral signature" in articles published within a week of each other.

For starters, I found a random reddit post supporting my suspicions (I'm not the reddit OP): https://www.reddit.com/r/meteorology/comments/9okgwi/opinion...

Could this be backdated upon upgrade to enterprise i.e the admin is able to access private conversations prior to upgrade from free tier?