condition	mean	min	max
4 h after light	9.301309999999999	9.186539999999999	9.42351
8 h after light	9.226336666666667	9.12384	9.30355
12 h after light	9.39958	9.26915	9.54525
4 h after dark	9.191036666666667	8.8979	9.36003
8 h after dark	9.212166666666667	9.12871	9.37045
12 h after dark	9.123109999999999	8.97669	9.250739999999999