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 0.024289966666666666 0.0 0.0728699 12 h after light 0.0 0.0 0.0 3 h after dark 0.0 0.0 0.0 6 h after dark 0.0716842 0.0 0.126083 9 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0