condition mean min max 4 h after light 11.8647095 10.477438 13.251981 8 h after light 10.730919 10.718031 10.743807 12 h after light 8.2331725 7.847117 8.619228 4 h after dark 9.355003 8.644184 10.065822 8 h after dark 9.322854 8.715929 9.929779 12 h after dark 9.590577 9.590577 9.590577