condition	mean	min	max
4 h after light	15.837299999999999	15.2078	16.4668
8 h after light	21.94145	21.6126	22.2703
12 h after light	19.61825	19.259	19.9775
4 h after dark	17.35595	17.0301	17.6818
8 h after dark	18.4567	16.9277	19.9857
12 h after dark	17.782249999999998	17.198	18.3665