I agree... Like-ratio is definitely an unnecessary way to say "percentage liked" (numLiked / (numLiked + numDisliked)). The green line indicates the like ratio

I agree... Like-ratio is definitely an unnecessary way to say "percentage liked" (numLiked / (numLiked + numDisliked)). The green line indicates the like ratio of episodes over time. The top of the line is green, indicating a high (relative to other episodes) like-ratio. The redder the line is, the (relatively) lower the like-ratio. Again, perhaps my copy is a little too terse; I'm not the best communicator.