condition mean min max 0 h after light 5.34864 4.60107 6.09621 2 h after light 5.134505 3.54557 6.72344 4 h after light 4.573535 3.59617 5.5509 8 h after light 4.53357 3.98648 5.08066 12 h after light 8.12448 7.82032 8.42864 2 h after dark 9.50671 9.10936 9.90406 4 h after dark 9.49621 7.76682 11.2256 8 h after dark 7.98677 6.75997 9.21357 12 h after dark 6.81407 5.66699 7.96115