condition	mean	min	max
3 h after light	7.30371	6.35	7.92301
6 h after light	9.85886	6.10818	13.18
9 h after light	12.695166666666667	10.0844	16.8474
12 h after light	13.6575925	7.22787	16.98
3 h after dark	16.1529	15.0081	17.7381
6 h after dark	7.280243333333333	6.62967	7.72764
9 h after dark	6.099373333333333	5.20832	7.76945
12 h after dark	3.127225	2.99243	3.26202