condition mean min max 0 h after light 22.3065 22.249 22.364 4 h after light 16.63275 16.5296 16.7359 8 h after light 19.26665 18.7594 19.7739 4 h after dark 23.3419 20.8006 25.8832 8 h after dark 26.505699999999997 25.9286 27.0828 12 h after dark 21.071550000000002 19.8936 22.2495