condition mean min max 0 h after light 1.75309 1.74893 1.75725 2 h after light 4.02972 3.79616 4.26328 4 h after light 9.529565 8.94443 10.1147 8 h after light 34.6439 34.0072 35.2806 12 h after light 17.79555 16.5034 19.0877 2 h after dark 7.855705 6.9021 8.80931 4 h after dark 7.275415000000001 7.2107 7.34013 8 h after dark 4.720165 4.06542 5.37491 12 h after dark 2.93105 2.81285 3.04925