condition	mean	min	max
0 h after light	9.243185	9.20962	9.27675
4 h after light	6.685015	5.68759	7.68244
8 h after light	6.49997	6.45816	6.54178
4 h after dark	7.2719000000000005	6.41103	8.13277
8 h after dark	7.832879999999999	7.6749	7.99086
12 h after dark	7.181229999999999	6.3275	8.03496