condition	mean	min	max
0 h after light	14.48265	14.3689	14.5964
4 h after light	15.11575	13.927	16.3045
8 h after light	15.56415	14.6006	16.5277
4 h after dark	17.5215	16.1585	18.8845
8 h after dark	18.10785	18.0319	18.1838
12 h after dark	17.78185	16.936	18.6277