condition	mean	min	max
4 h after light	6.0397	5.84242	6.22959
8 h after light	6.048896666666667	5.90024	6.20892
12 h after light	5.983256666666667	5.81944	6.300009999999999
4 h after dark	6.05118	5.91031	6.26244
8 h after dark	6.095996666666667	5.89156	6.22804
12 h after dark	6.062790000000001	5.93371	6.2855300000000005