condition mean min max 4 h after light 4.128685 3.62841 4.62896 8 h after light 2.8422549999999998 2.30979 3.37472 12 h after light 4.817515 4.76242 4.87261 4 h after dark 6.7748 6.50042 7.04918 8 h after dark 3.5836499999999996 2.44948 4.71782 12 h after dark 4.388205 3.91056 4.86585