Number of series simulcasted by each service, by season, as registered in Senpai -- only one service per series, with selection skewed against services with known negatives, such as image quality issues. Series are only counted on their starting season.
Number of new/sequel series per season. Remakes, spinoffs and split cur second parts are all treated as sequels for the purpose of this graph. Series are only counted on their starting season. Might be inaccurate because I sometimes forget to push the "This is a sequel" button.