condition mean min max 4 h after light 3.9660349999999998 3.13385 4.79822 8 h after light 3.6340149999999998 3.2478 4.02023 12 h after light 6.155765 5.58036 6.73117 4 h after dark 10.783715 9.48553 12.0819 8 h after dark 10.271815 9.89793 10.6457 12 h after dark 6.67881 5.54606 7.81156