condition mean min max 0 h after light 3.378805 2.85116 3.90645 2 h after light 2.997275 2.61901 3.37554 4 h after light 6.853695 6.84744 6.85995 8 h after light 14.9627 14.3999 15.5255 12 h after light 16.9106 16.6608 17.1604 2 h after dark 16.7146 14.2162 19.213 4 h after dark 17.56835 13.9614 21.1753 8 h after dark 12.687619999999999 9.91224 15.463 12 h after dark 4.33156 3.8735 4.78962