condition mean min max 4 h after light 4.40914 3.48829 5.32999 8 h after light 2.659875 2.5021 2.81765 12 h after light 2.639275 1.53808 3.74047 4 h after dark 8.16714 6.00308 10.3312 8 h after dark 5.3166899999999995 5.14447 5.48891 12 h after dark 4.968225 4.09693 5.83952