condition mean min max 4 h after light 1.958898 0.812824 3.55366 8 h after light 1.6270206666666667 0.236772 2.80406 12 h after light 2.2586633333333332 1.18275 3.92079 4 h after dark 1.58838 0.99998 2.00344 8 h after dark 0.933947 0.621184 1.21139 12 h after dark 2.35492 1.91686 2.89859