condition	mean	min	max
4 h after light	15.815542	14.508168	17.122916
8 h after light	16.039071	15.273495	16.804647
12 h after light	18.747883	18.253914	19.241852
4 h after dark	14.538868999999998	11.829042	17.248696
8 h after dark	23.130103	15.972686	30.28752
12 h after dark	14.181562	14.181562	14.181562