condition	mean	min	max
4 h after light	8.876743333333334	8.78692	9.043439999999999
8 h after light	8.98896	8.82532	9.29149
12 h after light	8.891910000000001	8.65185	9.2131
4 h after dark	8.96778	8.71631	9.36595
8 h after dark	9.038086666666667	8.78144	9.41319
12 h after dark	8.915600000000001	8.790280000000001	9.10064