N₂O profiles for planets around the Sun and M5V hosts at 100% and 1% PAL O₂. The sun-hosted planet shows significant amounts of N₂O depletion via photolysis (the main stratospheric sink of N₂O), especially at lower O₂ levels, as the UV protection from both O₂ and O₃ is significantly lessened. This depletion of N₂O impacts the conversion of N₂O to NO_x. Meanwhile, the M5V-hosted planet experiences very little photolysis at all O₂ levels, due to the low UV flux of the host star.