condition	mean	min	max
4 h after light	15.1444615	14.248041	16.040882
8 h after light	16.649490999999998	16.417913	16.881069
12 h after light	14.563946	12.709979	16.417913
4 h after dark	14.7943345	13.079849	16.50882
8 h after dark	16.673388	16.417913	16.928863
12 h after dark	17.655871	17.655871	17.655871