condition mean min max 0 h after light 12.48035 12.4348 12.5259 2 h after light 8.987645 8.27668 9.69861 4 h after light 7.4795 6.94909 8.00991 8 h after light 9.24396 7.70512 10.7828 12 h after light 16.6202 15.7004 17.54 2 h after dark 18.8532 17.4978 20.2086 4 h after dark 13.7778 13.5553 14.0003 8 h after dark 14.3864 13.4878 15.285 12 h after dark 14.422 12.7047 16.1393