condition	mean	min	max
4 h after light	16.435837499999998	14.815186	18.056489
8 h after light	17.8267685	16.290425	19.363112
12 h after light	18.2160105	17.381816	19.050205
4 h after dark	17.862154500000003	17.321252	18.403057
8 h after dark	16.2478455	16.205266	16.290425
12 h after dark	15.757423	15.757423	15.757423