condition	mean	min	max
4 h after light	7.956481500000001	7.889173	8.02379
8 h after light	8.4512165	7.987277	8.915156
12 h after light	8.9159445	8.657854	9.174035
4 h after dark	8.07018	7.72877	8.41159
8 h after dark	7.6630515	6.882371	8.443732
12 h after dark	8.71574	8.71574	8.71574