condition	mean	min	max
4 h after light	15.7743	14.9987	16.5499
8 h after light	7.689545	7.56351	7.81558
12 h after light	8.591155	7.76019	9.42212
4 h after dark	14.95755	14.2517	15.6634
8 h after dark	23.0167	22.4584	23.575
12 h after dark	20.09915	19.2262	20.9721