condition mean min max 4 h after light 4.203525 1.67097 6.73608 8 h after light 2.728785 0.0 5.45757 12 h after light 4.14868 1.66635 6.63101 4 h after dark 5.868 5.82589 5.91011 8 h after dark 5.806895 4.37927 7.23452 12 h after dark 6.012785 4.83993 7.18564