condition mean min max 0 h after light 0.0 0.0 0.0 2 h after light 0.0 0.0 0.0 4 h after light 1.36561 0.0 2.73122 8 h after light 1.382735 0.0 2.76547 12 h after light 0.0 0.0 0.0 2 h after dark 1.504385 0.0 3.00877 4 h after dark 0.0 0.0 0.0 8 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0