condition mean min max 0 h after light 12.3459 11.7006 12.9912 4 h after light 37.1863 31.5732 42.7994 8 h after light 69.40325 58.3935 80.413 4 h after dark 70.1035 60.4697 79.7373 8 h after dark 44.7443 44.2004 45.2882 12 h after dark 25.0841 12.9784 37.1898