condition mean min max 4 h after light 0.0 0.0 0.0 8 h after light 0.0 0.0 0.0 12 h after light 0.0 0.0 0.0 4 h after dark 0.4682766666666667 0.0 1.40483 8 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0