condition	mean	min	max
4 h after light	9.60976	9.517560000000001	9.69047
8 h after light	7.956833333333334	7.83778	8.12996
12 h after light	8.93651	8.800939999999999	9.18031
4 h after dark	8.999189999999999	8.701989999999999	9.24119
8 h after dark	9.469956666666667	9.31971	9.70283
12 h after dark	9.40061	9.24863	9.65323