condition	mean	min	max
4 h after light	7.932799999999999	7.70211	8.133519999999999
8 h after light	7.799916666666666	7.6722	7.94597
12 h after light	7.8490666666666655	7.532719999999999	8.067739999999999
4 h after dark	8.1264	7.923589999999999	8.4754
8 h after dark	8.03632	7.908980000000001	8.18165
12 h after dark	8.008476666666667	7.91736	8.098989999999999