condition	mean	min	max
4 h after light	1.3552215	0.695173	2.01527
8 h after light	6.7135	6.26592	7.16108
12 h after light	20.5137	18.843	22.1844
4 h after dark	15.817666666666666	15.0279	16.3101
8 h after dark	6.273193333333333	5.75453	7.02643
12 h after dark	2.6901	2.41706	3.02494