condition mean min max 4 h after light 2.062495 1.94482 2.18017 8 h after light 2.38862 2.29424 2.483 12 h after light 2.5659850000000004 2.38798 2.74399 4 h after dark 3.153565 3.0375 3.26963 8 h after dark 2.599085 2.58217 2.616 12 h after dark 2.710805 2.39095 3.03066