condition mean min max 4 h after light 2.874255 2.86082 2.88769 8 h after light 2.257985 2.21741 2.29856 12 h after light 2.30748 2.24653 2.36843 4 h after dark 2.83652 2.61961 3.07613 8 h after dark 2.4790466666666666 2.26897 2.61259 12 h after dark 2.65581 2.48637 2.77397