condition mean min max 4 h after light 4.607383333333333 4.52439 4.6593599999999995 8 h after light 4.93265 4.86993 4.96727 12 h after light 4.931266666666667 4.88525 4.96129 4 h after dark 4.7693 4.70049 4.87817 8 h after dark 4.66973 4.560980000000001 4.724819999999999 12 h after dark 4.66592 4.62646 4.70753