condition	mean	min	max
4 h after light	6.08077	5.8929800000000006	6.25809
8 h after light	6.706503333333333	6.428719999999999	6.88922
12 h after light	6.690696666666667	6.489330000000001	6.81981
4 h after dark	6.532719999999999	6.306019999999999	6.881989999999999
8 h after dark	6.1617733333333335	5.69099	6.47864
12 h after dark	6.002513333333334	5.82195	6.21459