Extended Data Fig. 6: Global-mean vertical profiles of ozone number density at three different stellar flare frequencies.
From: Persistence of flare-driven atmospheric chemistry on rocky habitable zone worlds

These results show the cumulative effect (300 Earth days) of repeated stellar flares. Results that assume α approaching those of observed MUSCLES stars (α = 0.7) established a new chemical equilibrium, whereas those using a values close to very active stars (α = 0.54) have their ozone layers rapidly depleted.