condition mean min max 2 h after light 1.129062 0.675131 1.52834 6 h after light 0.627747 0.312328 0.938581 10 h after light 0.9160651666666666 0.29432 1.54534 14 h after light 0.7337406666666666 0.464982 1.52518 18 h after light 0.9095695 0.598998 1.16842 2 h after dark 0.912688 0.517356 1.2231