condition	mean	min	max
4 h after light	7.99748	7.547619999999999	8.267710000000001
8 h after light	6.659643333333333	6.63847	6.67806
12 h after light	6.149776666666667	6.056690000000001	6.27546
4 h after dark	5.957283333333334	5.8613800000000005	6.13584
8 h after dark	6.11071	6.01829	6.2077800000000005
12 h after dark	6.40307	6.2157599999999995	6.53753