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 1.1601825 0.0 3.05434 3 h after dark 0.0 0.0 0.0 6 h after dark 0.0 0.0 0.0 9 h after dark 1.8114366666666666 0.0 2.89083 12 h after dark 1.51715 0.0 3.0343