condition mean min max 0 h after light 0.0 0.0 0.0 4 h after light 0.0 0.0 0.0 8 h after light 0.0 0.0 0.0 4 h after dark 0.2342315 0.23377 0.234693 8 h after dark 0.3563265 0.239854 0.472799 12 h after dark 0.118852 0.0 0.237704