condition mean min max 0 h after light 12.681049999999999 12.2994 13.0627 4 h after light 8.81887 7.94717 9.69057 8 h after light 13.683 12.6515 14.7145 4 h after dark 15.3029 14.6931 15.9127 8 h after dark 13.51525 13.4272 13.6033 12 h after dark 11.2336 10.7787 11.6885