condition	mean	min	max
4 h after light	6.087313333333333	6.01998	6.20863
8 h after light	6.190676666666667	5.99153	6.52493
12 h after light	6.075693333333333	5.6519699999999995	6.36454
4 h after dark	6.346299999999999	6.15444	6.6604399999999995
8 h after dark	6.23264	6.1529300000000005	6.2922400000000005
12 h after dark	6.20825	6.15068	6.28675