Trump lies again about inauguration's TV ratings

Once again Trump posted a misleading tweet about his inauguration. This time about the TV ratings for it:

https://twitter.com/realdonaldtrump/status/823151124815507460

"Wow, television ratings just out: 31 million people watched the Inauguration, 11 million more than the very good ratings from 4 years ago!"

In reality, Obama's first inauguration, in 2009, had 7 million more TV viewers. Reagan's and Carter's inaugurations also had higher ratings.

https://www.google.com.mx/amp/variety.com/2017/tv/news/donald-trump-inauguration-ratings-30-6-million-obama-1201966171/amp/

By the way: Obama's first inauguration in 2009 also had more internet streamings than Trump's.