Each square is a season. Brighter means a higher rating.
About these ratings
Season averages are calculated from rated episodes, not official IMDb season ratings. The rating beside a title is its IMDb series rating.
The five fixed bands are below 6, 6 to under 7, 7 to under 8, 8 to under 9, and 9–10. Colors use the displayed one-decimal score for both seasons and episodes. Hatching means no rating, and an empty space means no season record is available. Episode numbering follows IMDb.