a heat map with days stacked vertically and each one of these horizontal bars is a day. it sort of goes from one day time, cool nighttime into the early morning, and so the first thing that you might notice is that not all of these days cycle look the same.
in fact you might even see that it looks like there’s a sort of a state change that happens in the middle. when it’s dark blue of the nighttime up here, sort of becomes a lighter green. and in the daytime these yellow spots become a sort of a huge mass of yellow.
if you look in the literature both in 