condition mean min max 0 h after light 22.78005 19.8872 25.6729 2 h after light 18.9851 18.7061 19.2641 4 h after light 12.39405 11.559 13.2291 8 h after light 12.70505 10.7955 14.6146 12 h after light 21.8808 19.8261 23.9355 2 h after dark 17.3732 16.4309 18.3155 4 h after dark 18.4446 18.1153 18.7739 8 h after dark 30.5787 29.0049 32.1525 12 h after dark 22.2954 19.3571 25.2337