condition mean min max 4 h after light 0.6732475 0.474729 0.871766 8 h after light 0.6845145 0.538004 0.831025 12 h after light 1.31623 1.27938 1.35308 4 h after dark 1.75017 1.62179 1.87855 8 h after dark 1.718785 1.50094 1.93663 12 h after dark 1.036143 0.904806 1.16748