On the heatmap, it says below that the darkest blue aims to be around 80% of recent study levels. I'm wondering how many days back is it looking to assess your recent study levels. I'm hitting the point where my review count per day is lowering after learning a lot of new words and I'm having to do focused reviews to hit the darkest blue. And I want to know how fast the number of correct answers will go down.
I seem to recall that thirty days or something like that was mentioned once. Don’t remember the reason, so I could be off base, but that’s the number that sticks in my head.
