condition	mean	min	max
4 h after light	9.48834	9.33913	9.59357
8 h after light	9.444383333333334	9.351180000000001	9.55851
12 h after light	9.388766666666667	9.18322	9.51084
4 h after dark	9.486930000000001	9.444180000000001	9.533
8 h after dark	9.5617	9.48519	9.63091
12 h after dark	9.529226666666666	9.36704	9.6327