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 0.102129 0.0 0.204258 4 h after dark 0.0492679 0.0 0.0985358 8 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0