condition mean min max 4 h after light 1.697085 1.37052 2.02365 8 h after light 2.66523 2.47236 2.8581 12 h after light 6.019105 5.64952 6.38869 4 h after dark 7.026695 6.52858 7.52481 8 h after dark 3.893795 3.67539 4.1122 12 h after dark 3.340375 3.25422 3.42653