condition mean min max 0 h after light 11.08475 10.1621 12.0074 4 h after light 9.92561 9.76232 10.0889 8 h after light 9.841435 7.82457 11.8583 4 h after dark 11.351495 8.70089 14.0021 8 h after dark 11.844715 9.57513 14.1143 12 h after dark 11.44925 11.1893 11.7092