condition mean min max 3 h after light 18.57035833333333 11.8869 27.7859 7 h after light 20.643675 12.5778 30.6218 11 h after light 20.24255 12.7492 27.4858 2 h after dark 21.064716666666666 13.7715 31.2891 6 h after dark 19.7324 14.1601 27.7121 10 h after dark 22.088941666666667 15.5952 32.7044