condition	mean	min	max
4 h after light	7.024583333333333	6.8868100000000005	7.0968
8 h after light	6.908476666666667	6.76398	7.0108
12 h after light	7.346103333333333	7.26957	7.4149899999999995
4 h after dark	7.357730000000001	7.276680000000001	7.5044
8 h after dark	7.08611	6.913310000000001	7.1827
12 h after dark	7.075303333333333	7.0078	7.18335