condition mean min max 0 h after light 0.0 0.0 0.0 4 h after light 0.84968 0.0 1.69936 8 h after light 0.825015 0.0 1.65003 4 h after dark 0.274077 0.0 0.548154 8 h after dark 2.470785 1.65642 3.28515 12 h after dark 0.271546 0.0 0.543092