condition mean min max 0 h after light 4.276305 4.26859 4.28402 4 h after light 5.877805 5.42737 6.32824 8 h after light 4.617990000000001 4.31399 4.92199 4 h after dark 3.739795 3.73242 3.74717 8 h after dark 4.475575 4.34629 4.60486 12 h after dark 4.621945 4.25258 4.99131