condition	mean	min	max
4 h after light	15.62625	14.4756	16.7769
8 h after light	13.63155	12.5214	14.7417
12 h after light	15.1301	13.9844	16.2758
4 h after dark	21.19885	20.1596	22.2381
8 h after dark	19.183500000000002	18.3708	19.9962
12 h after dark	19.153	18.947	19.359