condition mean min max 4 h after light 14.685076 13.875028 15.495124 8 h after light 14.027203499999999 12.972653 15.081754 12 h after light 15.352268500000001 14.938474 15.766063 4 h after dark 17.249965500000002 15.374591 19.12534 8 h after dark 18.350404 15.374591 21.326217 12 h after dark 15.222516 15.222516 15.222516