condition	mean	min	max
4 h after light	5.63863	5.41957	5.85769
8 h after light	4.601655	4.1619	5.04141
12 h after light	13.59795	13.4689	13.727
4 h after dark	18.79886666666667	16.919	20.5528
8 h after dark	15.904633333333333	15.2097	16.9281
12 h after dark	8.68932	8.52357	8.86962