condition mean min max 0 h after light 105.7175 100.758 110.677 4 h after light 90.2313 83.8015 96.6611 8 h after light 38.6706 37.4546 39.8866 4 h after dark 38.64515 31.8283 45.462 8 h after dark 86.1737 86.0254 86.322 12 h after dark 108.9419 98.4308 119.453