condition mean min max 4 h after light 7.815776666666666 4.11816 11.7855 8 h after light 4.66257 1.00247 7.31374 12 h after light 5.008166666666667 2.82709 6.60863 4 h after dark 5.79158 3.08416 7.86381 8 h after dark 5.22 3.80685 6.08335 12 h after dark 7.826083333333333 7.09193 8.43919