condition	mean	min	max
4 h after light	9.157755	8.29401	10.0215
8 h after light	6.136405	6.0467	6.22611
12 h after light	6.553455	5.01371	8.0932
4 h after dark	14.94085	13.1299	16.7518
8 h after dark	15.6085	15.2703	15.9467
12 h after dark	13.0077	11.582	14.4334