condition	mean	min	max
0 h after light	6.73582	6.701	6.77064
4 h after light	7.14771	6.81566	7.47976
8 h after light	8.79124	8.2207	9.36178
4 h after dark	8.871025	8.4923	9.24975
8 h after dark	9.396185	8.74987	10.0425
12 h after dark	5.550955	4.8064	6.29551