condition mean min max 4 h after light 3.06422 2.55615 3.57229 8 h after light 2.619805 2.47039 2.76922 12 h after light 2.727725 2.60597 2.84948 4 h after dark 3.5817433333333333 3.20186 3.77476 8 h after dark 3.51296 3.19851 4.00443 12 h after dark 3.3728833333333332 3.07864 3.56126