condition	mean	min	max
4 h after light	11.102915	8.32823	13.8776
8 h after light	1.893495	1.57687	2.21012
12 h after light	1.362315	1.29883	1.4258
4 h after dark	4.469695	3.73294	5.20645
8 h after dark	11.8519	11.1426	12.5612
12 h after dark	12.08275	11.7424	12.4231