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

Apr 14, 2018

Time
Show
Ratings
A18-49
10:30am Dragon Ball Super 1,020,000 602,000
11:00am DBZ Kai 793,000 439,000
11:30am Fooly Cooly 607,000 348,000
12:00am Jojo’s Bizarre Adventure 489,000 301,000
12:30am Gundam IBO 410,000 257,000
1:00am Black Clover 361,000 226,000
1:30am Hunter X Hunter 347,000 226,000
2:00am Naruto Shippuden 334,000 226,000
2:30am Space Dandy 352,000 220,000
3:00am Cowboy Bebop 341,000 206,000
3:00am Ghost In The Shell 326,000 204,000

;
comparison

Apr 15th, 2017

Time
Show
Ratings
A18-49
11:00am Samurai Jack 1,297,000 848,000
11:30am Dragon Ball Super 1,000,000 647,000
12:00am DBZ Kai 924,000 577,000
12:30am Jojo’s Bizarre Adventure 829,000 535,000
1:00am Jojo’s Bizarre Adventure 747,000 464,000
1:30am Hunter X Hunter 687,000 422,000
2:00am Gundam Unicorn 555,000 338,000
2:30am Naruto: Shippuden 562,000 339,000
3:00am Ghost In The Shell 510,000 337,000

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.