condition mean min max 4 h after light 7.36874 7.3466 7.39088 8 h after light 5.25488 5.14023 5.36953 12 h after light 2.777355 2.39507 3.15964 4 h after dark 2.2155299999999998 2.01137 2.38693 8 h after dark 4.666696666666667 4.27385 4.90177 12 h after dark 5.249903333333333 3.77322 6.31972