condition mean min max 0 h after light 8.38129 6.86976 9.89282 4 h after light 6.41975 6.30003 6.53947 8 h after light 10.044905 9.67621 10.4136 4 h after dark 13.93705 12.9689 14.9052 8 h after dark 9.505595 9.37871 9.63248 12 h after dark 8.3906 7.68754 9.09366