condition mean min max 0 h after light 16.25805 14.949 17.5671 2 h after light 20.83745 20.7549 20.92 4 h after light 7.459655 7.38265 7.53666 8 h after light 8.40882 7.66024 9.1574 12 h after light 12.07165 11.1173 13.026 2 h after dark 12.86585 11.7513 13.9804 4 h after dark 13.76635 12.3937 15.139 8 h after dark 19.709699999999998 18.9961 20.4233 12 h after dark 20.4148 19.977 20.8526