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

Mar 17th, 2018

Time
Show
Ratings
A18-49
10:30am Dragon Ball Super 988,000 614,000
11:00am DBZ Kai 826,000 506,000
11:30am Black Clover 643,000 393,000
12:00am Jojo’s Bizarre Adventure 549,000 341,000
12:30am Gundam IBO 474,000 288,000
1:00am Hunter X Hunter 468,000 275,000
1:30am Naruto Shippuden 488,000 289,000
2:00am Outlaw Star 460,000 298,000
2:30am Space Dandy 438,000 280,000
3:00am Cowboy Bebop 386,000 248,000
3:00am Ghost In The Shell 312,000 190,000

;
comparison

Mar 18th, 2017

Time
Show
Ratings
A18-49
11:00am Samurai Jack 1,300,000 871,000
11:30am Dragon Ball Super 1,054,000 666,000
12:00am DBZ Kai 973,000 616,000
12:30am Jojo’s Bizarre Adventure 790,000 527,000
1:00am Gundam IBO 679,000 456,000
1:30am Hunter X Hunter 660,000 438,000
2:00am Naruto: Shippuden 656,000 431,000
2:30am One Piece 587,000 386,000
3:00am Ghost In The Shell 559,000 365,000

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.