condition	mean	min	max
4 h after light	8.222956666666667	8.112960000000001	8.36169
8 h after light	8.583196666666666	8.32415	8.92659
12 h after light	8.37389	8.06715	8.70314
4 h after dark	8.40931	8.11374	8.68418
8 h after dark	8.52008	8.28814	8.74948
12 h after dark	8.543833333333334	8.261989999999999	8.75802