condition	mean	min	max
4 h after light	18.4546865	14.938617	21.970756
8 h after light	16.765444	14.729327	18.801561
12 h after light	13.71564	13.541228	13.890052
4 h after dark	11.323156	9.900072	12.74624
8 h after dark	10.066774	9.902416	10.231132
12 h after dark	17.734947	17.734947	17.734947