condition mean min max 3 h after light 0.0 0.0 0.0 6 h after light 0.0 0.0 0.0 9 h after light 0.0 0.0 0.0 12 h after light 0.0 0.0 0.0 3 h after dark 0.0 0.0 0.0 6 h after dark 0.06620766666666666 0.0 0.198623 9 h after dark 0.06884466666666667 0.0 0.206534 12 h after dark 0.0 0.0 0.0