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 0.0 0.0 0.0 12 h after light 0.0 0.0 0.0 3 h after dark 0.17707499999999998 0.0 0.531225 6 h after dark 0.25336733333333333 0.0 0.760102 9 h after dark 0.0 0.0 0.0 12 h after dark 0.2048075 0.0 0.409615