Fig. 5: Two flux models and their cumulative curves of crater numbers with time.
From: Asteroid shower on the Earth-Moon system immediately before the Cryogenian period revealed by KAGUYA
a illustrates a conventional constant model and an 800 Ma spike model, and b illustrates their cumulative curves of crater numbers as a function of time, where total counts of craters older than 3.2 billion years are adjusted to be the same in both models.
