condition mean min max 4 h after light 0.7854 0.29639 1.27441 8 h after light 0.4809855 0.321611 0.64036 12 h after light 1.4623650000000001 1.36864 1.55609 4 h after dark 2.619105 1.82033 3.41788 8 h after dark 3.21782 3.04021 3.39543 12 h after dark 1.78811 1.51762 2.0586