condition mean min max 4 h after light 12.946493 12.757287 13.135699 8 h after light 16.196453 15.144685 17.248221 12 h after light 13.123865 13.112031 13.135699 4 h after dark 11.1452855 10.738133 11.552438 8 h after dark 11.4181405 11.222991 11.61329 12 h after dark 11.909987 11.909987 11.909987