condition	mean	min	max
4 h after light	8.516286666666668	8.43944	8.606760000000001
8 h after light	8.822696666666667	8.48991	9.08557
12 h after light	8.579766666666668	8.407910000000001	8.83655
4 h after dark	8.64752	8.35892	8.94037
8 h after dark	8.706293333333333	8.455210000000001	8.90889
12 h after dark	8.16022	7.94619	8.373660000000001