condition mean min max 4 h after light 1.51422 1.11353 1.88438 8 h after light 1.279623 0.324439 2.4083 12 h after light 1.165734 0.612732 1.87579 4 h after dark 2.449796666666667 1.60819 3.11986 8 h after dark 3.70745 2.83404 4.36591 12 h after dark 2.17401 1.77701 2.88204