condition mean min max 3 h after light 3.67432 3.51904 3.93158 6 h after light 4.32896 3.98366 4.81156 9 h after light 12.0779 10.8947 13.2872 12 h after light 18.4115125 1.66055 26.2865 3 h after dark 24.811433333333333 22.29 27.8741 6 h after dark 21.144 19.7152 22.4561 9 h after dark 8.503636666666667 8.33341 8.75228 12 h after dark 1.27874 1.11013 1.44735