condition	mean	min	max
4 h after light	7.111665	5.73043	8.4929
8 h after light	7.657795	7.08528	8.23031
12 h after light	20.50285	10.1869	30.8188
4 h after dark	17.8157	15.9726	19.6588
8 h after dark	12.14485	8.9362	15.3535
12 h after dark	8.68624	5.03998	12.3325