All data obtained from @SonOfTheBronx on Twitter:
Son Of The Bronx/Programming Insider

Sept 16th, 2017

Time
Show
Ratings
A18-49
11:00am Dragon Ball Super 850,000 509,000
11:30am DBZ Kai 775,000 462,000
12:00am Jojo’s Bizarre Adventure 618,000 394,000
13:20am Tokyo Ghoul 677,000 431,000
1:00am Hunter X Hunter 589,000 346,000
1:30am Lupin the 3rd 489,000 273,000
2:00am Naruto: Shippuden 494,000 272,000
2:30am Outlaw Star 398,000 221,000
3:00am Cowboy Bebop 314,000 222,000
3:00am Attack On Titan 316,000 219,000


comparison

Sept 17th, 2016

Time
Show
Ratings
A18-49
11:30am DBZ Kai 1,267,000 767,000
12:00am One Punch Man 1,203,000 754,000
12:30am Gundam: IBO 916,000 552,000
1:00am Hunter X Hunter 826,000 451,000
1:30am Naruto: Shippuden 848,000 457,000
2:00am One Piece 701,000 371,000
2:30am Parasyte 599,000 322,000

If you want more data, you can check my spreadsheet here. That will have further data including per year difference and A18-49 differences.

Let us know what you think in the comments below about the ratings.