condition mean min max 0 h after light 2.733275 2.31903 3.14752 4 h after light 2.510305 2.43915 2.58146 8 h after light 2.666945 2.51636 2.81753 4 h after dark 4.1586300000000005 3.83556 4.4817 8 h after dark 2.885475 2.87337 2.89758 12 h after dark 1.955325 1.71826 2.19239