condition mean min max 0 h after light 0.9891155 0.846951 1.13128 4 h after light 1.6957 1.58213 1.80927 8 h after light 1.556385 1.43691 1.67586 4 h after dark 2.98861 1.9409 4.03632 8 h after dark 1.6052149999999998 1.54215 1.66828 12 h after dark 1.0511265 0.551593 1.55066