condition	mean	min	max
4 h after light	8.556778	8.179022	8.934534
8 h after light	9.037912	8.706941	9.368883
12 h after light	7.414682	6.432307	8.397057
4 h after dark	8.1404175	8.060668	8.220167
8 h after dark	7.867903	7.675138	8.060668
12 h after dark	7.911415	7.911415	7.911415