condition mean min max 4 h after light 13.33841 7.92183 18.2973 8 h after light 8.61552 2.07732 15.5073 12 h after light 9.12027 6.27102 13.8594 4 h after dark 13.432293333333334 9.07558 17.9851 8 h after dark 13.024096666666667 7.39809 17.5457 12 h after dark 15.695833333333335 14.0645 18.5071