condition mean min max 0 h after light 9.819415 8.06403 11.5748 2 h after light 10.237385 5.38557 15.0892 4 h after light 5.366085 5.26974 5.46243 8 h after light 5.546735 2.76547 8.328 12 h after light 9.817625 6.13665 13.4986 2 h after dark 18.5913 15.0438 22.1388 4 h after dark 23.838 15.5011 32.1749 8 h after dark 14.955295 8.74689 21.1637 12 h after dark 8.498095 5.51899 11.4772