condition	mean	min	max
4 h after light	9.45718	9.33612	9.57824
8 h after light	6.908035	6.58116	7.23491
12 h after light	9.090285	8.67399	9.50658
4 h after dark	14.9495	14.6653	15.2337
8 h after dark	16.427799999999998	15.9893	16.8663
12 h after dark	14.83785	14.3964	15.2793