condition mean min max 0 h after light 3.66797 3.36732 3.96862 4 h after light 3.430615 3.27493 3.5863 8 h after light 3.64862 3.49727 3.79997 4 h after dark 4.558085 4.52209 4.59408 8 h after dark 4.38555 4.2918 4.4793 12 h after dark 3.6693550000000004 3.43888 3.89983