condition mean min max 2 h after light 0.0 0.0 0.0 6 h after light 0.0 0.0 0.0 10 h after light 0.018757 0.0 0.112542 14 h after light 0.0 0.0 0.0 18 h after light 0.018234 0.0 0.109404 2 h after dark 0.0 0.0 0.0