We have the overnight ratings for Supernatural season 13 episode 13.
From Showbuzz Dally
Fast Demo 2018 Feb 08.THU
Final Ratings
18-49 - 0.6
Total Viewers - 1.81
We were up a little in total viewers and steady in the 18-49 demographic.  Also we were #2 in Nielsen Social ratings. See charts below the cut.
From TV Series Finale
SPN through28
Social media ratings.
Nielsen top 5 28
We will update this as more ratings become available.