condition	mean	min	max
4 h after light	15.25335	13.1266	17.3801
8 h after light	11.21245	10.6068	11.8181
12 h after light	9.801525000000002	8.72225	10.8808
4 h after dark	14.6083	13.8992	15.427
8 h after dark	17.808933333333332	17.6022	17.9192
12 h after dark	20.481766666666665	20.2648	20.732