condition mean min max 4 h after light 4.867406666666667 4.67488 5.162030000000001 8 h after light 4.66429 4.42437 4.84 12 h after light 4.617323333333333 4.5098199999999995 4.77025 4 h after dark 4.71133 4.63896 4.7881800000000005 8 h after dark 4.7782333333333336 4.50694 4.9705699999999995 12 h after dark 4.729543333333333 4.5877099999999995 4.91466