condition	mean	min	max
4 h after light	3.974625	3.92659	4.02266
8 h after light	6.427239999999999	6.14734	6.70714
12 h after light	6.654695	6.61058	6.69881
4 h after dark	13.8047	12.109	15.5004
8 h after dark	9.19282	8.94418	9.44146
12 h after dark	7.736084999999999	7.20071	8.27146