condition	mean	min	max
4 h after light	7.832915	6.43218	9.23365
8 h after light	7.48766	7.45056	7.52476
12 h after light	8.897165000000001	8.50838	9.28595
4 h after dark	9.680575000000001	9.09345	10.2677
8 h after dark	8.36565	8.053	8.6783
12 h after dark	9.29503	9.16643	9.42363