condition mean min max 4 h after light 14.6042 14.0439 15.1645 8 h after light 14.9494 13.6341 16.2647 12 h after light 26.85885 26.0648 27.6529 4 h after dark 34.44175 34.1002 34.7833 8 h after dark 21.24425 19.1717 23.3168 12 h after dark 20.0684 19.9238 20.213