condition	mean	min	max
4 h after light	18.560026	16.448644	20.671408
8 h after light	16.751586500000002	16.263151	17.240022
12 h after light	15.240353500000001	14.99146	15.489247
4 h after dark	15.8323685	14.133181	17.531556
8 h after dark	14.548125500000001	14.545254	14.550997
12 h after dark	13.646371	13.646371	13.646371