condition mean min max 0 h after light 0.0 0.0 0.0 4 h after light 0.0630355 0.0 0.126071 8 h after light 0.0 0.0 0.0 4 h after dark 0.0 0.0 0.0 8 h after dark 0.0 0.0 0.0 12 h after dark 0.0617815 0.0 0.123563