condition mean min max 2 h after light 1.0481118333333335 0.339608 1.45984 6 h after light 1.295377 0.685669 2.05351 10 h after light 0.9441955 0.388581 1.63791 14 h after light 1.0905986666666667 0.532977 1.73699 18 h after light 1.4941591666666667 0.315065 2.21597 2 h after dark 2.02912 1.26767 2.79969