condition mean min max 0 h after light 0.0 0.0 0.0 4 h after light 0.1613415 0.0 0.322683 8 h after light 0.0 0.0 0.0 4 h after dark 0.1607165 0.0 0.321433 8 h after dark 0.0 0.0 0.0 12 h after dark 0.159862 0.0 0.319724